James P Hogan

 Inherit The Stars

 Giant Series #1

  

 To the memory of my Father

 prologue

  

 He became aware of consciousness returning.

 Instinctively his mind recoiled, as if by some effort of will he

 could arrest the relentless flow of seconds that separated

 non-awareness from awareness and return again to the timeless

 oblivion in which the agony of total exhaustion was unknown and

 unknowable.

 The hammer that had threatened to burst from his chest was now

 quiet. The rivers of sweat that had drained with his strength from

 every hollow of his body were now turned cold. His limbs had turned

 to lead. The gasping of his lungs had returned once more to a slow

 and even rhythm. It sounded loud in the close confines of his

 helmet.

 He tried to remember how many had died. Their release was final;

 for him there was no release. How much longer could he go on? What

 was the point? Would there be anyone left alive at Gorda anyway?

 "Gorda. . . ? Gorda. . . ?"

 His mental defenses could shield him from reality no longer.

 "Must get to Gorda!"

 He opened his eyes. A billion unblinking stars stared back without

 interest. When he tried to move, his body refused to respond, as if

 trying to prolong to the utmost its last precious moments of rest.

 He took a deep breath and, clenching his teeth at the pain that

 instantly racked again through every fiber of his body, forced

 himself away from the rock and into a sitting position. A wave of

 nausea swept over him. His head sagged forward and struck the

 inside of his visor. The nausea passed.

 He groaned aloud.

 "Feeling better, then, soldier?" The voice came clearly through the

 speaker inside his helmet. "Sun's getting low. We gotta be moving."

 He lifted his head and slowly scanned the nightmare wilderness of

 scorched rock and ash-gray dust that confronted him.

 "Whe-" The sound choked in his throat. He swallowed, licked his

 lips, and tried again. "Where are you?"

 "To your right, up on the rise just past that small cliff that juts

 out-the one with the big boulders underneath."

 He turned his head and after some seconds detected a bright blue

 patch against the ink-black sky. It seemed blurred and far away. He

 blinked and strained his eyes again, forcing his brain to

 coordinate with his vision. The blue patch resolved itself into the

 figure of the tireless Koriel, clad in a heavy-duty combat suit.

 "I see you." After a pause: "Anything?"

 "It's fairly flat on the other side of the rise-should be easier

 going for a while. Gets rockier farther on. Come have a look."

 He inched his arms upward to find purchase on the rock behind, then

 braced them to thrust his weight forward over his legs. His knees

 trembled. His face contorted as he fought to concentrate his

 remaining strength into his protesting thighs. Already his heart

 was pumping again, his lungs heaving. The effort evaporated and he

 fell back against the rock. His labored breathing rasped over

 Koriel's radio.

 "Finished. . . Can't move. .

 The blue figure on the skyline turned.

 "Aw, what kinda talk's that? This is the last stretch. We're there,

 buddy-we're there."

 "No-no good. . . Had it. . ." Koriel waited a few seconds.

 "I'm coming back down."

 "No-you go on. Someone's got to make it."

 No response.

 "Koriel . . .

 He looked back at where the figure had stood, but already it had

 disappeared below the intervening rocks and was out of the line of

 transmission. A minute or two later the figure emerged from behind

 the nearby boulders, covering the ground in long, effortless

 bounds. The bounds broke into a walk as Koriel approached the

 hunched form clad in red.

 "C'mon, soldier, on your feet now. There's people back there

 depending on us."

 He felt himself gripped below his arm and raised irresistibly, as

 if some of Koriel's limitless reserves of strength were pouring

 into him. For a while his head swam and he leaned with the top of

 his visor resting on the giant's shoulder insignia.

 "Okay," he managed at last. "Let's go."

 Hour after hour the thin snake of footprints, two pinpoints of

 color at its head, wound its way westward across the wilderness

 amid steadily lengthening shadows. He marched as if in a trance,

 beyond feeling pain, beyond feeling exhaustion-beyond feeling

 anything. The skyline never seemed to change; soon he could no

 longer look at it. Instead, he began picking out the next prominent

 boulder or crag, and counting off the paces until they reached it.

 "Two hundred and thirteen less to go." And then he repeated it over

 again. . . and again. . . and again. The rocks marched by in slow,

 endless, indifferent procession. Every step became a separate

 triumph of will-a deliberate, conscious effort to drive one foot

 yet one more pace beyond the last. When he faltered, Koriel was

 there to catch his arm; when he fell, Koriel was always there to

 haul him up. Koriel never tired.

 At last they stopped. They were standing in a gorge perhaps a

 quarter mile wide, below one of the lines of low, broken cliffs

 that flanked it on either side. He collapsed on the nearest

 boulder. Koriel stood a few paces ahead surveying the landscape.

 The line of crags immediately above them was interrupted by a

 notch, which marked the point where a steep and narrow cleft

 tumbled down to break into the wall of the main gorge. From the

 bottom of the cleft, a mound of accumulated rubble and rock debris

 led down about fifty feet to blend with the floor of the gorge not

 far from where they stood. Koriel stretched out an arm to point up

 beyond the cleft.

 "Gorda will be roughly that way," he said without turning. "Our

 best way would be up and onto that ridge. If we stay on the flat

 and go around the long way, it'll be too far. What d'you say?" The

 other stared up in mute despair. The rockfall, funneling up toward

 the mouth of the cleft, looked like a mountain. In the distance

 beyond towered the ridge, jagged and white in the glare of the sun.

 It was impossible.

 Koriel allowed his doubts no time to take root. Somehow-slipping,

 sliding, stumbling, and falling-they reached the entrance to the

 cleft. Beyond it, the walls narrowed and curved around to the left,

 cutting off the view of the gorge below from where they had come.

 They climbed higher. Around them, sheets of raw reflected sunlight

 and bottomless pits of shadow met in knife-edges across rocks

 shattered at a thousand crazy angles. His brain ceased to ex

 tract the concepts of shape and form from the insane geometry of

 white and black that kaleidoscoped across his retina. The patterns

 grew and shrank and merged and whirled in a frenzy of visual

 cacophony.

 His face crashed against his visor as his helmet thudded into the

 dust. Koriel hoisted him to his feet.

 "You can do it. We'll see Gorda from the ridge. It'll be all

 downhill from there. . . ."

 But the figure in red sank slowly to its knees and folded over. The

 head inside the helmet shook weakly from side to side. As Koriel

 watched, the conscious part of his mind at last accepted the

 inescapable logic that the parts beneath consciousness already

 knew. He took a deep breath and looked about him.

 Not far below, they had passed a hole, about five feet across, cut

 into the base of one of the rock walls. It looked like the remnant

 of some forgotten excavation-maybe a preliminary digging left by a

 mining survey. The giant stooped, and grasping the harness that

 secured the backpack to the now insensible figure at his feet,

 dragged the body back down the slope to the hole. It was about ten

 feet deep inside. Working quickly, Koriel arranged a lamp to

 reflect a low light off the walls and roof. Then he removed the

 rations from his companion's pack, laid the figure back against the

 rear wall as comfortably as he could, and placed the food

 containers within easy reach. Just as he was finishing, the eyes

 behind the visor ifickered open.

 "You'll be fine here for a while." The usual gruffness was gone

 from Koriel's voice. "I'll have the rescue boys back from Gorda

 before you know it."

 The figure in red raised a feeble arm. Just a whisper came through.

 "You-you tried. . . . Nobody could have. . ." Koriel clasped the

 gauntlet with both hands.

 "Mustn't give up. That's no good. You just have to hang on a

 while." Inside his helmet the granite cheeks were wet. He backed to

 the entrance and made a final salute. "So long, soldier." And then

 he was gone.

 Outside he built a small cairn of stones to mark the position of

 the hole. He would mark the trail to Gorda with such cairns. At

 last he straightened up and turned defiantly to face the desolation

 surrounding him. The rocks seemed to scream down in soundless

 laughing mockery. The stars above remained unmoved. Koriel glowered

 up at the cleft, rising up toward the tiers of crags and terraces

 that guarded the ridge, still soaring in the distance. His lips

 curled back to show his teeth.

 "So-it's just you and me now, is it?" he snarled at the Universe.

 "Okay, you bastard-let's see you take this round!"

 With his legs driving like slow pistons, he attacked the ever

 steepening slope.

  

 chapter one

  

 Accompanied by a mild but powerful whine, a gigantic silver torpedo

 rose slowly upward to hang two thousand feet above the sugar-cube

 huddle of central London. Over three hundred yards long, it spread

 at the tail into a slim delta topped by two sharply swept fins. For

 a while the ship hovered, as if savoring the air of its newfound

 freedom, its nose swinging smoothly around to seek the north. At

 last, with the sound growing, imperceptibly at first but with

 steadily increasing speed, it began to slide forward and upward. At

 ten thousand feet its engines erupted into full power, hurling the

 suborbital skyliner eagerly toward the fringes of space. Sitting in

 row thirty-one of C deck was Dr. Victor Hunt, head of Theoretical

 Studies at the Metadyne Nucleonic Instrument Company of Reading,

 Berkshire-itself a subsidiary of the mammoth Intercontinental Data

 and Control Corporation, headquartered at Portland, Oregon, USA. He

 absently surveyed the diminishing view of Hendon that crawled

 across the cabin wall-display screen and tried again to fit some

 kind of explanation to the events of the last few days.

 His experiments with matter-antimatter particle extinctions had

 been progressing well. Forsyth-Scott had followed Hunt's reports

 with evident interest and therefore knew that the tests were

 progressing well. That made it all the more strange for him to call

 Hunt to his office one morning to ask him simply to drop everything

 and get over to IDCC Portland as quickly as could be arranged. From

 the managing director's tone and manner it had been obvious that

 the request was couched as such mainly for reasons of politeness;

 in reality this was one of the few occasions on which Hunt had no

 say in the matter.

 To Hunt's questions, Forsyth-Scott had stated quite frankly that he

 didn't know what it was that made Hunt's immediate presence at IDCC

 so imperative. The previous evening he had received a videocall

 from Felix Borlan, the president of IDCC, who had told him that as

 a matter of priority he required the only working prototype of the

 scope prepared for immediate shipment to the USA and an

 installation team ready to go with it. Also, he had insisted that

 Hunt personally come over for an indefinite period to take charge

 of some project involving the scope, which could not wait. For

 Hunt's benefit, Forsyth-Scott had replayed Borlan's call on his

 desk display and allowed him to verify for himself that

 Forsyth-Scott in turn was acting under a thinly disguised

 directive. Even stranger, Borlan too had seemed unable to say

 precisely what it was that the instrument and its inventor were

 needed for.

 The Trimagniscope, developed as a consequence of a two-year

 investigation by Hunt into certain aspects of neutrino physics,

 promised to be perhaps the most successful venture ever undertaken

 by the company. Hunt had established that a neutrino beam that

 passed through a solid object underwent certain interactions in the

 close vicinity of atomic nuclei, which produced measurable changes

 in the transmitted output. By raster scanning an object with a trio

 of synchronized, intersecting beams, he had devised a method of

 extracting enough information to generate a 3-D color hologram,

 visually indistinguishable from the original solid. Moreover, since

 the beams scanned right through, it was almost as easy to conjure

 up views of the inside as of the out. These capabilities, combined

 with that of high-power magnification that was also inherent in the

 method, yielded possibilities not even remotely approached by

 anything else on the market. From quantitative cell metabolism and

 bionics, through neurosurgery, metallurgy, crystallography, and

 molecular electronics, to engineering inspection and quality

 control, the applications were endless. Inquiries were pouring in

 and shares were soaring. Removing the prototype and its originator

 to the USA-totally disrupting carefully planned production and

 marketing schedules-bordered on the catastrophic. Borlan knew this

 as well as anybody. The more Hunt turned these things over in his

 mind, the less plausible the various possible explanations that had

 at first occurred to him seemed, and the more convinced he became

 that whatever the answer turned out to be, it would be found to lie

 far beyond even Felix Borlan and IDCC.

 His thoughts were interrupted by a voice issuing from somewhere in

 the general direction of the cabin roof.

 "Good afternoon, ladies and gentlemen. This is Captain Mason

 speaking. I would like to welcome you aboard this Boeing 1017 on

 behalf of British Airways. We are now in level flight at our

 cruising altitude of fifty-two miles, speed 3,160 knots. Our course

 is thirty-five degrees west of true north, and the coast is now

 below with Liverpool five miles to starboard. Passengers are free

 to leave their seats. The bars are open and drinks and snacks are

 being served. We are due to arrive in San Francisco at ten

 thirty-eight hours local time; that's one hour and fifty minutes

 from now. I would like to remind you that it is necessary to be

 seated when we begin our descent in one hour and thirty-five

 minutes time. A warning will sound ten minutes before descent

 commences and again at five minutes. We trust you will enjoy your

 journey. Thank you."

 The captain signed himself off with a click, which was drowned out

 as the regulars made their customary scramble for the vi-phone

 booths.

 In the seat next to Hunt, Rob Gray, Metadyne's chief of

 Experimental Engineering, sat with an open briefcase resting on his

 knees. He studied the information being displayed on the screen

 built into its lid.

 "A regular flight to Portland takes off fifteen minutes after we

 get in," he announced. "That's a bit tight. Next one's not for over

 four hours. What d'you reckon?" He punctuated the question with a

 sideways look and raised eyebrows.

 Hunt pulled a face. "I'm not arsing about in Frisco for four hours.

 Book us an Avis jet-we'll fly ourselves up."

 "That's what I thought."

 Gray played the mini keyboard below the screen to summon an index,

 consulted it briefly, then touched another key to display a

 directory. Selecting a number from one of the columns, he mouthed

 it silently to himself as he tapped it in. A copy of the number

 appeared near the bottom of the screen with a request for him to

 confirm. He pressed the Y button. The screen went blank for a few

 seconds and then exploded into a whirlpool of color, which

 stabilized almost at once into the features of a platinum-blonde,

 who radiated the kind of smile normally reserved for toothpaste

 commercials.

 "Good morning. Avis San Francisco, City Terminal. This is Sue

 Parker. Can I help you?"

 Gray addressed the grille, located next to the tiny camera lens

 just above the screen.

 "Hi, Sue. Name's Gray-R. J. Gray, airbound for SF, due to arrive

 about two hours from now. Could I reserve an aircar, please?"

 "Sure thing. Range?"

 "Oh-about five hundred. . ." He glanced at Hunt.

 "Better make it seven," Hunt advised.

 "Make that seven hundred miles minimum."

 "That'll be no problem, Mr. Gray. We have Skyrovers, Mercury

 Threes, Honeybees, or Yellow Birds. Any preference?"

 "No-any'll do."

 "I'll make it a Mercury, then. Any idea how long?"

 "No-er-indefinite."

 "Okay. Full computer nav and flight control? Automatic VTOL?"

 "Preferably and, ah, yes."

 "You have a full manual license?" The blonde operated unseen keys

 as she spoke.

 "Yes."

 "Could I have personal data and account-checking data, please?"

 Gray had extracted the card from his wallet while the exchange was

 taking place. He inserted it into a slot set to one side of the

 screen, and touched a key.

 The blonde consulted other invisible oracles. "Okay," she

 pronounced. "Any other pilots?"

 "One. A Dr. V. Hunt."

 "His personal data?"

 Gray took Hunt's already proffered card and substituted it for his

 own. The ritual was repeated. The face then vanished to be replaced

 by a screen of formatted text with entries completed in the boxes

 provided.

 "Would you verify and authorize, please?" said the disembodied

 voice from the grille. "Charges are shown on the right."

 Gray cast his eye rapidly down the screen, grunted, and keyed in a

 memorized sequence of digits that was not echoed on the display.

 The word POSITIVE appeared in the box marked "Authorization." Then

 the clerk reappeared, still smiling.

 "When would you want to collect, Mr. Gray?" she asked.

 Gray turned toward Hunt.

 "Do we want lunch at the airport first?"

 Hunt grimaced. "Not after that party last night. Couldn't face

 anything." His face took on an expression of acute distaste as he

 moistened the inside of the equine rectum he had once called a

 mouth. "Let's eat tonight somewhere."

 "Make it round about eleven thirty hours," Gray advised. "It'll be

 ready."

 "Thanks, Sue."

 "Thank you. Good-bye."

 "Bye now."

 Gray flipped a switch, unplugged the briefcase from the socket

 built into the armrest of his seat, and coiled the connecting cord

 back into the space provided in the lid. He closed the case and

 stowed it behind his feet.

 "Done," he announced.

 The scope was the latest in a long line of technological triumphs

 in the Metadyne product range to be conceived and nurtured to

 maturity by the Hunt-Gray partnership. Hunt was the ideas man,

 leading something of a free-lance existence within the

 organization, left to pursue whatever line of study or experiment

 his personal whims or the demands of his researches dictated. His

 title was somewhat misleading; in fact he was Theoretical Studies.

 The position was one which he had contrived, quite deliberately, to

 fall into no obvious place in the managerial hierarchy of Metadyne.

 He acknowledged no superior, apart from the managing director, Sir

 Francis Forsyth-Scott, and boasted no subordinates. On the

 company's organization charts, the box captioned "Theoretical

 Studies" stood alone and disconnected near the inverted tree head R

 & D, as if added as an afterthought. Inside it there appeared the

 single entry Dr. Victor Hunt. This was the way he liked it-a

 symbiotic relationship in which Metadyne provided him with the

 equipment, facilities, services, and funds he needed for his work,

 while he provided Metadyne with first, the prestige of retaining on

 its payroll a world-acknowledged authority on nuclear

 infrastructure theory, and second-but by no means least-a steady

 supply of fallout.

 Gray was the engineer. He was the sieve that the fallout fell on.

 He had a genius for spotting the gems of raw ideas that had

 application potential and transforming them into developed, tested,

 marketable products and product enhancements. Like Hunt, he had

 survived the mine field of the age of unreason and emerged safe and

 single into his mid-thirties. With Hunt, he shared a passion for

 work, a healthy partiality for most of the deadly sins to

 counterbalance it, and his address book. All things considered,

 they were a good team.

 Gray bit his lower lip and rubbed his left earlobe. He always bit

 his lower lip and rubbed his left earlobe when he was about to talk

 shop.

 "Figured it out yet?" he asked.

 "This Borlan business?"

 "Uh-huh."

 Hunt shook his head before lighting a cigarette. "Beats me."

 "I was thinking. . . Suppose Felix has dug up some hot sales

 prospect for scopes-maybe one of his big Yank customers. He could

 be setting up some super demo or something."

 Hunt shook his head again. "No. Felix wouldn't go and screw up

 Metadyne's schedules for anything like that. Anyhow, it wouldn't

 make sense-the obvious thing to do would be to fly the people to

 where the scope is, not the other way round."

 "Mmmm . . . I suppose the same thing applies to the other thought

 that occurred to me-some kind of crash teach-in for IDCC people."

 "Right-same thing goes."

 "Mmmm. . ." When Gray spoke again, they had covered another six

 miles. "How about a takeover? The whole scope thing is big-Felix

 wants it handled stateside."

 Hunt reflected on the proposition. "Not for my money. He's got too

 much respect for Francis, to pull a stunt like that. He knows

 Francis can handle it okay. Besides, that's not his way of doing

 things-too underhanded." Hunt paused to exhale a cloud of smoke.

 "Anyhow, I think there's a lot more to it than meets the eye. From

 what I saw, even Felix didn't seem too sure what it's all about."

 "Mmmm . . ." Gray thought for a while longer before abandoning

 further excursions into the realms of deductive logic. He

 contemplated the growing tide of humanity flowing in the general

 direction of C-deck bar. "My guts are a bit churned up, too," he

 confessed. "Feels like a crate of Guinness on top of a vindaloo

 curry. Come on-let's go get a coffee."

 In the star-strewn black velvet one thousand miles farther up, the

 Sirius Fourteen communications-link satellite followed, with cold

 and omniscient electronic eyes, the progress of the skyliner

 streaking across the mottled sphere below. Among the ceaseless

 stream of binary data that flowed through its antennae, it

 identified a call from the Boeing's Gamma Nine master computer,

 requesting details of the latest weather forecast for northern

 California. Sirius Fourteen flashed the message to Sirius Twelve,

 hanging high over the Canadian Rockies, and Twelve in turn beamed

 it down to the tracking station at Edmonton. From here the message

 was relayed by optical cable to Vancouver Control and from there by

 microwave repeaters to the Weather Bureau station at Seattle. A few

 thousandths of a second later, the answers poured back up the chain

 in the opposite direction. Gamma Nine digested the information,

 made one or two minor alterations to its course and ifight plan,

 and sent a record of the dialogue down to Ground Control,

 Prestwick.

  

 chapter two

  

 It had rained for over two days.

 The Engineering Materials Research Department of the Ministry of

 Space Sciences huddled wetly in a fold of the Ural Mountains, an

 occasional ray of sunlight glinting from a laboratory window or

 from one of the aluminum domes of the reactor building. Seated in

 her office in the analysis section, Valereya Petrokhov turned to

 the pile of reports left on her desk for routine approval. The

 first two dealt with run-of-the-mill high-temperature corrosion

 tests. She flicked casually through the pages, glanced at the

 appended graphs and tables, scrawled her initials on the line

 provided, and tossed them across into the tray marked "Out."

 Automatically she began scanning down the first page of number

 three. Suddenly she stopped, a puzzled frown forming on her face.

 Leaning forward in her chair, she began again, this time reading

 carefully and studying every sentence. She finally went back to the

 beginning once more and worked methodically through the whole

 document, stopping in places to verify the calculations by means of

 the keyboard display standing on one side of the desk.

 "This is unheard of!" she exclaimed.

 For a long time she remained motionless, her eyes absorbed by the

 raindrops slipping down the window but her mind so focused

 elsewhere that the sight failed to register. At last she shook

 herself into movement and, turning again to the keyboard, rapidly

 tapped in a code. The strings of tensor equations vanished, to be

 replaced by a profile view of her assistant, hunched over a console

 in the control room downstairs. The profile transformed itself into

 a full face as he turned.

 "Ready to run in about twenty minutes," he said, anticipating the

 question. "The plasma's stabilizing now."

 "No-this has nothing to do with that," she replied, speaking a

 little more quickly than usual. "It's about your report 2906. I've

 just been through my copy."

 "Oh . . . yes?" His change in expression betrayed mild

 apprehension.

 "So-a niobium-zirconium alloy," she went on, stating the fact

 rather than asking a question, "with an unprecedented resistance to

 high-temperature oxidation and a melting point that, quite frankly,

 I won't believe until I've done the tests myself."

 "Makes our plasma-cans look like butter," Josef agreed.

 "Yet despite the presence of niobium, it exhibits a lower

 neutron-absorption cross section than pure zirconium?"

 "Macroscopic, yes-under a millibarn per square centimeter."

 "Interesting . . ." she mused, then resumed more briskly: "On top

 of that we have alpha-phase zirconium with silicon, carbon, and

 nitrogen impurities, yet still with a superb corrosion resistance."

 "Hot carbon dioxide, fluorides, organic acids, hypochiorites- we've

 been through the list. Generally an initial reaction sets in, but

 it's rapidly arrested by the formation of inert barrier layers. You

 could probably break it down in stages by devising a cycle of

 reagents in just the right sequence, but that would take a complete

 processing plant specially designed for the job!"

 "And the microstructure," Valereya said, gesturing toward the

 papers on her desk. "You've used the description fibrous."

 "Yes. That's about as near as you can get. The main alloy seems to

 be formed around a-well, a sort of microcrystalline lattice. It's

 mainly silicon and carbon, but with local concentrations of some

 titanium-magnesium compound that we haven't been able to quantify

 yet. I've never come across anything like it. Any ideas?"

 The woman's face held a faraway look for some seconds.

 "I honestly don't know what to think at the moment," she confessed.

 "But I feel this information should be passed higher without delay;

 it might be more important than it looks. But first I must be sure

 of my facts. Nikolai can take over down there for a while. Come up

 to my office and let's go through the whole thing in detail."

  

 chapter three

  

 The Portland headquarters of the Intercontinental Data and Control

 Corporation lay some forty miles east of the city, guarding the

 pass between Mount Adams to the north and Mount Hood to the south.

 It was here that at some time in the remote past a small in-land

 sea had penetrated the Cascade Mountains and carved itself a

 channel to the Pacific, to become in time the mighty Columbia

 River.

 Fifteen years previously it had been the site of the

 government-owned Bonneville Nucleonic Weapons Research Laboratory.

 Here, American scientists, working in collaboration with the United

 States of Europe Federal Research Institute at Geneva, had

 developed the theory of meson dynamics that led to the nucleonic

 bomb. The theory predicted a "clean" reaction with a yield orders

 of magnitude greater than that produced by thermonuclear fusion.

 The holes they had blown in the Sahara had proved it.

 During that period of history, the ideological and racial tensions

 inherited from the twentieth century were being swept away by the

 tide of universal affluence and falling birth rates that came with

 the spread of high-technology living. Traditional rocks of strife

 and suspicion were being eroded as races, nations, sects, and

 creeds became inextricably mingled into one huge, homogeneous

 global society. As the territorial irrationalities of long-dead

 politicians resolved themselves and the adolescent nation-states

 matured, the defense budgets of the superpowers were progressively

 reduced year by year. The advent of the nucleonic bomb served only

 to accelerate what would have happened anyway. By universal assent,

 world demilitarization became fact.

 One sphere of activity that benefited enormously from the surplus

 funds and resources that became available after demilitarization

 was the rapidly expanding United Nations Solar System Exploration

 Program. Already the list of responsibilities held by this

 organization was long; it included the operation of all artificial

 satellites in terrestrial, Lunar, Martian, Venusian, and Solar

 orbits; the building and operation of all manned bases on Luna and

 Mars, plus the orbiting laboratories over Venus; the launching of

 deep-space robot probes and the planning and control of manned

 missions to the outer planets. UNSSEP was thus expanding at just

 the right rate and the right time to absorb the supply of

 technological talent being released as the world's major armaments

 programs were run down. Also, as nationalism declined and most of

 the regular armed forces were demobilized, the restless youth of

 the new generation found outlets for their adventure-lust in the

 uniformed branches of the UN Space Arm. It was an age that buzzed

 with excitement and anticipation as the new pioneering frontier

 began planet-hopping out across the Solar System.

 And so NWRL Bonneville had been left with no purpose to serve. This

 situation did not go unnoticed by the directors of IDCC. Seeing

 that most of the equipment and permanent installations owned by

 NWRL could be used in much of the corporation's own research

 projects, they propositioned the government with an offer to buy

 the place outright. The offer was accepted and the deal went

 through. Over the years IDCC had further expanded the site,

 improved its aesthetics, and eventually established it as their

 nucleonics research center and world headquarters.

 The mathematical theory that had grown out of meson dynamics

 involved the existence of three hitherto unknown transuranic

 elements. Although these were purely hypothetical, they were

 christened hyperium, bonnevillium, and genevium. Theory also

 predicted that, due to a "glitch" in the transuranic

 mass-versus-binding-energy curve, these elements, once formed,

 would be stable. They were unlikely to be found occurring

 naturally, however-not on Earth, anyway. According to the

 mathematics, only two known situations could give the right

 conditions for their formation: the core of the detonation of a

 nucleonic bomb or the collapse of a supernova to a neutron star.

 Sure enough, analysis of the dust clouds after the Sahara tests

 yielded minute traces of hyperium and bonnevillium; genevium was

 not detected. Nevertheless, the first prediction of the theory was

 accepted as amply supported. Whether, one day, future generations

 of scientists would ever verify the second prediction, was another

 matter entirely.

 * * *

 Hunt and Gray touched down on the rooftop landing pad of the IDCC

 administration building shortly after fifteen hundred hours. By

 fifteen thirty they were sitting in leather armchairs facing the

 desk in Borlan's luxurious office on the tenth floor, while he

 poured three large measures of scotch at the teak bar built into

 the left wall. He walked back to the center, passed a glass to each

 of the Englishmen, went back around the desk, and sat down.

 "Cheers, then, guys," he offered. They returned the gesture.

 "Well," he began, "it's good to see you two again. Trip okay? How'd

 you make it up so soon-rent a jet?" He opened his cigar box as he

 spoke and pushed it across the desk toward them. "Smoke?"

 "Yes, good trip. Thanks, Felix," Hunt replied. "Avis." He inclined

 his head toward the window behind Borlan, which presented a

 panoramic view of pine-covered hills tumbling down to the distant

 Columbia. "Some scenery."

 "Like it?"

 "Makes Berkshire look a bit like Siberia."

 Borlan looked at Gray. "How are you keeping, Rob?"

 The corners of Gray's mouth twitched downwards. "Gutrot."

 "Party last night at some bird's," Hunt explained. "Too little

 blood in his alcohol stream."

 "Good time, huh?" Borlan grinned. "Take Francis along?" "You've got

 to be joking!"

 "Jollificating with the peasantry?" Gray mimicked in the impeccable

 tones of the English aristocracy. "Good God! Whatever next!"

 They laughed. Hunt settled himself more comfortably amid a haze of

 blue smoke. "How about yourself, Felix?" he asked. "Life still

 being kind to you?"

 Borlan spread his arms wide. "Life's great."

 "Angie still as beautiful as the last time I saw her? Kids okay?"

 "They're all fine. Tommy's at college now-majoring in physics and

 astronautical engineering. Johnny goes hiking most weekends with

 his club, and Susie's added a pair of gerbils and a bear cub to the

 family zoo."

 "So you're still as happy as ever. The responsibilities of power

 aren't wearing you down yet."

 Borlan shrugged and showed a row of pearly teeth. "Do I look like

 an ulcerated nut midway between heart attacks?"

 Hunt regarded the blue-eyed, deep-tanned figure with close-cropped

 fair hair as Borlan sprawled relaxedly on the other side of the

 broad mahogany desk. He looked at least ten years younger than the

 president of any intercontinental corporation had a right to.

 For a while the small talk revolved around internal affairs at

 Metadyne. At last a natural pause presented itself. Hunt sat

 forward, his elbows resting on his knees, and contemplated the last

 drop of amber liquid in his glass as he swirled it around first

 from right to left and then back again. Finally he looked up.

 "About the scope, Felix. What's going on, then?"

 Borlan had been expecting the question. He straightened slowly in

 his chair and appeared to think for a moment. At last he said:

 "Did you see the call I made to Francis?"

 "Yep."

 "Then. . ." Borlan didn't seem sure of how to put it. ". . . I

 don't know an awful lot more than you do." He placed his hands

 palms-down on the desk man attitude of candor, but his sigh was

 that of one not really expecting to be believed. He was right.

 "Come on, Felix. Give." Hunt's expression said the rest.

 "You must know," Gray insisted. "You fixed it all up."

 "Straight." Borlan looked from one to the other. "Look, taking

 things worldwide, who would you say our biggest customer is? It's

 no secret-UN Space Arm. We do everything for them from Lunar data

 links to-to laser terminal clusters and robot probes. Do you know

 how much revenue I've got forecast from UNSA next fiscal? Two

 hundred million bucks. . . two hundred million!"

 "So?"

 "So. . . well-when a customer like that says he needs help, he gets

 help. I'll tell you what happened. It was like this: UNSA is a big

 potential user of scopes, so we fed them all the information we've

 got on what the scope can do and how development is progressing in

 Francis's neck of the woods. One day-the day before I called

 Francis-this guy comes to see me all the way from Houston, where

 one of the big UNSA outfits has its HQ. He's an old buddy of

 mine-their top man, no less. He wants to know can the scope do this

 and can it do that, and I tell him sure it can. Then he gives me

 some examples of the things he's got in mind and he asks if we've

 got a working model yet. I tell him not yet, but that you've got a

 working prototype in England; we can arrange for him to go see it

 if he wants. But that's not what he wants. He wants the prototype

 down there in Houston, and he wants people who can operate it.

 He'll pay, he says-we can name our own figure-but he wants that

 instrument-something to do with a top-priority project down there

 that's got the whole of UNSA in a flap. When I ask him what it is,

 he clams up and says it's 'security restricted' for the moment."

 "Sounds a funny business," Hunt commented with a frown. "It'll

 cause some bloody awful problems back at Metadyne."

 "I told him all that." Borlan turned his palms upward in a gesture

 of helplessness. "I told him the score regarding the production

 schedules and availability forecasts, but he said this thing was

 big and he wouldn't go causing this kind of trouble if he didn't

 have a good reason. He wouldn't, either," Borlan added with obvious

 sincerity. "I've known him for years. He said UNSA would pay

 compensation for whatever we figure the delays will cost us."

 Borlan resumed his helpless attitude. "So what was I supposed to

 do? Was I supposed to tell an old buddy who happens to be my best

 customer to go take a jump?"

 Hunt rubbed his chin, threw back his last drop of scotch, and took

 a long, pensive draw on his cigar.

 "And that's it?" he asked at last.

 "That's it. Now you know as much as I do-except that since you left

 England we've received instructions from UNSA to start shipping the

 prototype to a place near Houston-a biological institute. The bits

 should start arriving day after tomorrow; the installation crew is

 already on its way over to begin work preparing the site."

 "Houston. . . Does that mean we're going there?" Gray asked.

 "That's right, Rob." Borlan paused and scratched the side of his

 nose. His face screwed itself into a crooked frown. "I, ah-I was

 wondering . . . The installation crew will need a bit of time, so

 you two won't be able to do very much there for a while. Maybe you

 could spend a few days here first, huh? Like, ah . . . meet some of

 our technical people and clue them in a little on how the scope

 works-sorta like a teach-in. What d'you say-huh?"

 Hunt laughed silently inside. Borlan had been complaining to

 Forsyth-Scott for months that while the largest potential markets

 for the scope lay in the USA, practically all of the know-how was

 confined to Metadyne; the American side of the organization needed

 more in the way of backup and information than it had been getting.

 "You never miss a trick, Felix," he conceded. "Okay, you bum, I'll

 buy it."

 Borlan's face split into a wide grin.

 "This UNSA character you were talking about," Gray said, switching

 the subject back again. "What were the examples?"

 "Examples?"

 "You said he gave some examples of the kind of thing he was

 interested in knowing if the scope could do."

 "Oh, yeah. Well, lemme see, now. . . He seemed interested in

 looking at the insides of bodies-bones, tissues, arteries-stuff

 like that. Maybe he wanted to do an autopsy or something. He also

 wanted to know if you could get images of what's on the pages of a

 book, but without the book being opened."

 This was too much. Hunt looked from Borlan to Gray and back again,

 mystified.

 "You don't need anything like a scope to perform an autopsy," he

 said, his voice strained with disbelief.

 "Why can't he open a book if he wants to know what's inside?" Gray

 demanded in a similar tone.

 Borlan showed his empty palms. "Yeah. I know. Search me-sounds

 screwy!"

 "And UNSA is paying thousands for this?"

 "Hundreds of thousands."

 Hunt covered his brow and shook his head in exasperation. "Pour me

 another scotch, Felix," he sighed.

  

 chapter four

  

 A week later the Mercury Three stood ready for takeoff on the

 rooftop of IDCC Headquarters. In reply to the queries that appeared

 on the pilot's console display screen, Hunt specified the Ocean

 Hotel in the center of Houston as their destination. The DEC

 minicomputer in the nose made contact with its IBM big brother that

 lived underground somewhere beneath the Portland Area Traffic

 Control Center and, after a brief consultation, announced a flight

 plan that would take them via Salt Lake City, Santa Fe, and Fort

 Worth. Hunt keyed in his approval, and within minutes the aircar

 was humming southeast and climbing to take on the challenge of the

 Blue Mountains looming ahead.

 Hunt spent the first part of the journey assessing his office files

 held on the computers back at Metadyne, to tidy up some of the

 unfinished business he had left behind. As the waters of the Great

 Salt Lake came glistening into view, he had just completed the

 calculations that went with his last experimental report and was

 adding his conclusions. An hour later, twenty thousand feet up over

 the Colorado River, he was hooked into MIT and reviewing some of

 their current publications. After refueling at Santa Fe they spent

 some time cruising around the city on manual control before finding

 somewhere suitable for lunch. Later on in the day, airborne over

 New Mexico, they took an incoming call from IDCC and spent the next

 two hours in conference with some of Borlan's engineers discussing

 technicalities of the scope. By the time Fort Worth was behind and

 the sun well to the west, Hunt was relaxing, watching a murder

 movie, while Gray slept soundly in the seat beside him.

 Hunt looked on with detached interest as the villain was unmasked,

 the hero claimed the admiring heroine he had just saved from a fate

 worse than death, and the rolling captions delivered today's moral

 message for mankind. Stifling a yawn, he flipped the mode switch to

 MONITOR/CONTROL to blank out the screen and kill the theme music in

 midbar. He stretched, stubbed out his cigarette, and hauled himself

 upright in his seat to see how the rest of the universe was getting

 along.

 Far to their right was the Brazos River, snaking south toward the

 Gulf, embroidered in gold thread on the light blue-gray of the

 distant haze. Ahead, he could already see the rainbow towers of

 Houston, standing at attention on the skyline in a tight defensive

 platoon. Houses were becoming noticeably more numerous in the

 foreground below. At intervals between them, unidentifiable

 sprawling constructions began to make their appearance-random

 collections of buildings, domes, girder lattices, and storage

 tanks, tied loosely together by tangles of roadways and pipelines.

 Farther away to the left, a line of perhaps half a dozen slim

 spires of silver reared up from a shantytown of steel and concrete.

 He identified them as gigantic Vega satellite ferries standing on

 their launch-pads. They seemed fitting sentinels to guard the

 approaches to what had become the Mecca of the Space Age.

 As Victor Hunt gazed down upon this ultimate expression of man's

 eternal outward urge, spreading away in every direction below, a

 vague restlessness stirred somewhere deep inside him.

 Hunt had been born in New Cross, the shabby end of East London,

 south of the river. His father had spent most of his life on strike

 or in the pub on the corner of the street debating grievances worth

 going on strike for. When he ran out of money and grievances, he

 worked on the docks at Deptford. Victor's mother worked in a bottle

 factory all day to make the money she lost playing bingo all

 evening. He spent his time playing football and falling in the

 Surrey Canal. There was a week when he stayed with an uncle in

 Worcester, a man who went to work dressed in a suit every day at a

 place that manufactured computers. And his uncle showed Victor how

 to wire up a binary adder.

 Not long afterward, everyone was yelling at everyone more often

 than usual, so Victor went to live with his aunt and uncle in

 Worcester. There he discovered a whole new, undreamed-of world

 where anything one wanted could be made to happen and magic things

 really came true-written in strange symbols and mysterious diagrams

 through the pages of the books on his uncle's shelves.

 At sixteen, Victor won a scholarship to Cambridge to study

 mathematics, physics, and physical electronics. He moved into

 lodgings there with a fellow student named Mike who sailed boats,

 climbed mountains, and whose father was a marketing director.

 When his uncle moved to Africa, Victor was adopted as a second son

 by Mike's family and spent his holidays at their home in Surrey or

 climbing with Mike and his friends, first in the hills of the Lake

 District, North Wales, and Scotland, and later in the Alps. They

 even tried the Eiger once, but were forced back by bad weather.

 After being awarded his doctorate, he remained at the university

 for some years to further his researches in mathematical

 nucleonics, his papers on which were by that time attracting

 widespread attention. Eventually, however, he was forced to come to

 terms with the fact that a growing predilection for some of the

 more exciting and attractive ingredients of life could not be

 reconciled with an income dependent on research grants. For a while

 he went to work on thermonuclear fusion control for the government,

 but rebelled at a life made impossible by the meddlings of

 uninformed bureaucracy. He tried three jobs in private industry but

 found himself unable to muster more than a cynical indisposition

 toward playing the game of pretending that annual budgets, gross

 margins on sales, earnings per share, or discounted cash flows

 really meant anything that mattered. And so, when he was just

 turning thirty, the loner he had always been finally asserted

 itself; he found himself gifted with rare and acknowledged talents,

 lettered with degrees, credited with achievements, bestowed with

 awards, cited with honors-and out of a job.

 For a while he paid the rent by writing articles for scientific

 journals. Then, one day, he was offered a free-lance assignment by

 the chief R and D executive of Metadyne to help out on the

 mathematical interpretation of some of their experimental work.

 This assignment led to another, and before long a steady

 relationship had developed between him and the company. Eventually

 he agreed to join them full-time in return for use of their

 equipment and services for his own researches-but under his

 conditions. And so the Theoretical Studies "Department" came into

 being.

 And now. . . something was missing. The something within him that

 had been awakened long ago in childhood would always crave new

 worlds to discover. And as he gazed out at the Vega ships. .

 His thoughts were interrupted as a stream of electromagnetic

 vibrations from somewhere below was transformed into the code which

 alerted the Mercury's flight-control processor. The stubby wing

 outside the cockpit dipped and the aircar turned, beginning the

 smooth descent that would merge its course into the eastbound

 traffic corridor that led to the heart of the city at two thousand

 feet.

  

 chapter five

  

 The morning sun poured in through the window and accentuated the

 chiseled crags of the face staring out, high over the center of

 Houston. The squat, stocky frame, conceivably modeled on that of a

 Sherman tank, threw a square slab of shadow on the carpet behind.

 The stubby fingers hammered a restless tattoo on the glass. Gregg

 Caldwell, executive director of the Navigation and Communications

 Division of UN Space Arm, reflected on developments so far.

 Just as he'd expected, now that the initial disbelief and

 excitement had worn off, everyone was jostling for a slice of the

 action. In fact, more than a few of the big wheels in some

 divisions-Biosciences, Chicago, and Space Medicine, Farnborough,

 for instance-were mincing no words in asking just how Navcomms came

 to be involved at all, let alone running the show, since the

 project obviously had no more connection with the business of

 navigation than it had with communication. The down-turned corners

 of Caidwell's mouth shifted back slightly in something that almost

 approached a smile of anticipation. So, the knives were being

 sharpened, were they? That was okay by him; he could do with a

 fight. After more than twenty years of hustling his way to the top

 of one of the biggest divisions of the Space Arm, he was a seasoned

 veteran at infighting-and he hadn't lost a drop of blood yet. Maybe

 this was an area in which Navcomms hadn't had much involvement

 before; maybe the whole thing was bigger than Navcomms could

 handle; maybe it was bigger than UNSA could handle; but- that was

 the way it was. It had chosen to fall into Navcomms' lap and that

 was where it was going to stay. If anyone wanted to help out, that

 was fine-but the project was stamped as Navcomms-controlled. If

 they didn't like it, let them try to change it. Man-let 'em try!

 His thoughts were interrupted by the chime of the console built

 into the desk behind him. He turned around, flipped a switch, and

 answered in a voice of baritone granite:

 "Caldwell."

 Lyn Garland, his personal assistant, greeted him from the screen.

 She was twenty-eight, pretty, and had long red hair and big, brown,

 intelligent eyes.

 "Message from Reception. Your two visitors from IDCC are here-Dr.

 Hunt and Mr. Gray."

 "Bring them straight up. Pour some coffee. You'd better sit in with

 us."

 "Will do."

 Ten minutes later formalities had been exchanged and everyone was

 seated. Caidwell regarded the Englishmen in silence for a few

 seconds, his lips pursed and his bushy brows gnarled in a knot

 across his forehead. He leaned forward and interlaced his fingers

 on the desk in front of him.

 "About three weeks ago I attended a meeting at one of our Lunar

 survey bases-Copernicus Three," he said. "A lot of excavation and

 site-survey work is going on in that area, much of it in connection

 with new construction programs. The meeting was attended by

 scientists from Earth and from some of the bases up there, a few

 people on the engineering side and certain members of the uniformed

 branches of the Space Arm. It was called following some strange

 discoveries there-discoveries that make even less sense now than

 they did then."

 He paused to gaze from one to the other. Hunt and Gray returned the

 look without speaking. Caldwell continued: "A team from one of the

 survey units was engaged in mapping out possible sites for

 clearance radars. They were operating in a remote sector, well away

 from the main area being leveled. .

 As he spoke, Caidwell began operating the keyboard recessed into

 one side of his desk. With a nod of his head he indicated the far

 wall, which was made up of a battery of display screens. One of the

 screens came to life to show the title sheet of a file, marked

 obliquely with the word RESTRICTED in red. This disappeared to be

 replaced by a contour map of what looked like a rugged and broken

 stretch of terrain. A slowly pulsing point of light appeared in the

 center of the picture and began moving across the map as Caldwell

 rotated a tracker ball set into the panel that held the keyboard.

 The light halted at a point where the contours indicated the

 junction of a steep-sided cleft valley with a wider gorge. The

 cleft valley was narrow and seemed to branch off from the gorge in

 a rising curve.

 "This map shows the area in question," the director resumed. "The

 cursor shows where a minor cleft joins the main fault running down

 toward the left. The survey boys left their vehicle at this point

 and proceeded on up to the cleft on foot, looking for a way to the

 top of that large rock mass-the one tagged 'five sixty." As

 Caidwell spoke, the pulsing light moved slowly along between the

 minor sets of contours, tracing out the path taken by the UN team.

 They watched it negotiate the bend above the mouth of the cleft and

 proceed some distance farther. The light approached the side of the

 cleft and touched it at a place where the contours merged into a

 single heavy line. There it stopped.

 "Here the side was a sheer cliff about sixty feet high. That was

 where they came across the first thing that was unusual-a hole in

 the base of the rock wall. The sergeant leading the group described

 it as being like a cave. That strike you as odd?"

 Hunt raised his eyebrows and shrugged. "Caves don't grow on moons,"

 he said simply.

 "Exactly."

 The screen now showed a photo view of the area, apparently taken

 from the spot at which the survey vehicle had been parked. They

 recognized the break in the wall of the gorge where the cleft

 joined it. The cleft was higher up than had been obvious from the

 map and was approached by a ramp of loose rubble. In the background

 they could see a squat tower of rock flattened on top- presumably

 the one marked "560" on the map. Caldwell allowed them some time to

 reconcile the picture with the map before bringing up the second

 frame. It showed a view taken high up, this time looking into the

 mouth of the cleft. A series of shots then followed, progressing up

 to and beyond the bend. "These are stills from a movie record,"

 Caidwell commented. "I won't bother with the whole set." The final

 frame in the sequence showed a hole in the rock about five feet

 across.

 "Holes like this aren't unknown on the Moon," CaIdwell remarked.

 "But they are rare enough to prompt our men into taking a closer

 look. The inside was a bit of a mess. There had been a

 rockfall-maybe several falls; not much room-just a heap of rubble

 and dust . . . at first sight, anyway." A new picture on the screen

 confirmed this statement. "But when they got to probing

 around a bit more, they came across something that was really

 unusual. Underneath they found a body-dead!"

 The picture changed again to show another view of the interior,

 taken from the same angie as the previous one. This time, however,

 the subject was the top half of a human figure lying amid the

 rubble and debris, apparently at the stage of being half uncovered.

 It was clad in a spacesuit which, under the layer of gray-white

 dust, appeared to be bright red. The helmet seemed intact, but it

 was impossible to make out any details of the face behind the visor

 because of the reflected camera light. Caldwell allowed them plenty

 of time to study the picture and reflect on these facts before

 speaking again.

 "That is the body. I'll answer some of the more obvious questions

 before you ask. First-no, we don't know who he is-or was- so we

 call him Charlie. Second-no, we don't know for sure what killed

 him. Third-no, we don't know where he came from." The executive

 director caught the puzzled look on Hunt's face and raised his

 eyebrows inquiringly.

 "Accidents can happen, and it's not always easy to say what caused

 them-I'll buy that," Hunt said. "But to not know who he is. . . ? I

 mean, he must have carried some kind of ID card; I'd have thought

 he'd have to. And even if he didn't, he must be from one of the UN

 bases up there. Someone must have noticed he was missing."

 For the first time the flicker of a smile brushed across Caldwell's

 face.

 "Of course we checked with all the bases, Dr. Hunt. Results

 negative. But that was just the beginning. You see, when they got

 him back to the labs for a more thorough check, a number of

 peculiarities began to emerge which the experts couldn't explain-

 and, believe me, we've had enough brains in on this. Even after we

 brought him back here, the situation didn't get any better. In

 fact, the more we find out, the worse it gets."

 "'Back here'? You mean. . .

 "Oh, yes. Charlie's been shipped back to Earth. He's over at the

 Westwood Biological Institute right now-a few miles from here.

 We'll go and have a look at him later on today."

 Silence reigned for what seemed like a long time as Hunt and Gray

 digested the rapid succession of new facts. At last Gray offered:

 ~~ayoe someoociy oumpea mm on tor some reasonr~

 "No, Mr. Gray, you can forget anything like that." Caldwell waited

 a few more seconds. "Let me say that from what little we do know so

 far, we can state one or two things with certainty. First, Charlie

 did not come from any of the bases established to date on Luna.

 Furthermore"-Caldwell's voice slowed to an ominous rumble-"he did

 not originate from any nation of the world as we know it today. In

 fact, it is by no means certain that he originated from this planet

 at all!"

 His eyes traveled from Hunt to Gray, then back again, taking in the

 incredulous stares that greeted his words. Absolute silence

 enveloped the room. A suspense almost audible tore at their nerves.

 Caldwell's finger stabbed at the keyboard.

 The face leaped out at them from the screen in grotesque closeup,

 skull-like, the skin shriveled and darkened like ancient parchment,

 and stretched back over the bones to uncover two rows of grinning

 teeth. Nothing remained of the eyes but a pair of empty pits,

 staring sightlessly out through dry, leathery lids.

 Caldwell's voice, now a chilling whisper, hissed through the

 fragile air.

 "You see, gentlemen-Charlie died over fifty thousand years ago!"

  

 chapter six

  

 Dr. Victor Hunt stared absently down at the bird's-eye view of the

 outskirts of Houston sliding by below the UNSA jet. The

 mind-numbing impact of Caidwell's revelations had by this time

 abated sufficiently for him to begin putting together in his mind

 something of a picture of what it all meant.

 Of Charlie's age there could be no doubt. All living organisms take

 into their bodies known proportions of the radioactive isotopes of

 carbon and certain other elements. During life, an organism

 maintains a constant ratio of these isotopes to "normal" ones, but

 when it dies and intake ceases, the active isotopes are left to

 decay in a predictable pattern. This mechanism provides, in effect,

 a highly reliable clock, which begins to run at the moment of

 death. Analysis of the decay residues enables a reliable figure to

 be calculated for how long the clock has been running. Many such

 tests had been performed on Charlie, and all the results agreed

 within close limits.

 Somebody had pointed out that the validity of this method rested on

 the assumptions that the composition of whatever Charlie ate, and

 the constituents of whatever atmosphere he breathed, were the same

 as for modern man on modern Earth. Since Charlie might not be from

 Earth, this assumption could not be made. It hadn't taken long,

 however, for this point to be settled conclusively. Although the

 functions of most of the devices contained in Charlie's backpack

 were still to be established, one assembly had been identified as

 an ingeniously constructed miniature nuclear power plant. The U235

 fuel pellets were easily located and analysis of their decay

 products yielded a second, independent answer, although a less

 accurate one: The power unit in Charlie's backpack had been made

 some fifty thousand years previously. The further implication of

 this was that since the first set of test results was thus

 substantiated, it seemed to follow that in terms of air and food

 supply, there could have been little abnormal about Charlie's

 native environment.

 Now, Charlie's kind, Hunt told himself, must have evolved to their

 human form somewhere. That this "somewhere" was either Earth or not

 Earth was fairly obvious, the rules of basic logic admitting no

 other possibility. He traced back over what he could recall of the

 conventional account of the evolution of terrestrial life forms and

 wondered if, despite the generations of painstaking effort and

 research that had been devoted to the subject, there might after

 all be more to the story than had up until then been so confidently

 supposed. Several thousands of millions of years was a long time by

 anybody's standards; was it so totally inconceivable that somewhere

 in all those gulfs of uncertainty, there could be enough room to

 lose an advanced line of human descent which had flourished and

 died out long before modem man began his own ascent?

 On the other hand, the fact that Charlie was found on the Moon

 presupposed a civilization sufficiently advanced technically to

 send him there. Surely, on the way toward developing space flight,

 they would have evolved a worldwide technological society, and in

 doing so would have made machines, erected structures, built

 cities, used metals, and left all the other hallmarks of progress.

 If such a civilization had once existed on Earth, surely centuries

 of exploration and excavation couldn't have avoided stumbling on at

 least some traces of it. But not one instance of any such discovery

 had ever been recorded. Although the conclusion rested squarely on

 negative evidence, Hunt could not, even with his tendency toward

 open-mindedness, accept that an explanation along these lines was

 even remotely probable.

 The only alternative, then, was that Charlie came from somewhere

 else. Clearly this could not be the Moon itself: It was too small

 to have retained an atmosphere anywhere near long enough for life

 to have started at all, let alone reach an advanced level- and of

 course, his spacesuit showed he was just as much an alien there as

 was man.

 That only left some other planet. The problem here lay in Charlie's

 undoubted human form, which Caldwell had stressed although he

 hadn't elected to go into detail. Hunt knew that the process of

 natural evolution was accepted as occurring through selection, over

 a long period, from a purely random series of genetic mutations.

 All the established rules and principles dictated that the

 appearance of two identical end products from two completely

 isolated families of evolution, unfolding independently in

 different corners of the universe, just couldn't happen. Hence, if

 Charlie came from somewhere else, a whole branch of accepted

 scientific theory would come crashing down in ruins. So-Charlie

 couldn't possibly have come from Earth. Neither could he possibly

 have come from anywhere else. Therefore, Charlie couldn't exist.

 But he did.

 Hunt whistled silently to himself as the full implications of the

 thing began to dawn on him. There was enough here to keep the whole

 scientific world arguing for decades.

 Inside the Westwood Biological Institute, Caldwell, Lyn Garland,

 Hunt, and Gray were met by a Professor Christian Danchekker. The

 Englishmen recognized him, since Caldwell had introduced them

 earlier by vi-phone. On their way to the laboratory section of the

 institute, Danchekker briefed them further.

 In view of its age, the body was in an excellent state of

 preservation. This was due to the environment in which it had been

 found

 -a germ-free hard vacuum and an abnormally low temperature

 sustained, even at Lunar noon, by the insulating mass of the

 surrounding rock. These conditions had prevented any onset of

 bacterial decay of the soft tissues. No rupture had been found in

 the spacesuit. So the currently favored theory regarding cause of

 death was that a failure in the life-support system had resulted in

 a sudden fall in temperature. The body had undergone deep freezing

 in a short space of time with a consequent abrupt cessation of

 metabolic processes; ice crystals, formed from body fluids, had

 caused widespread laceration of cell membranes. In the course of

 time most of the lighter substances had sublimed, mainly from the

 outer layers, to leave behind a blackened, shriveled, natural kind

 of mummy. The most seriously affected parts were the eyes, which,

 composed for the most part of fluids, had collapsed completely,

 leaving just a few flaky remnants in their sockets.

 A major problem was the extreme fragility of the remains, which

 made any attempt at detailed examination next to impossible.

 Already the body had undergone some irreparable damage in the

 course of being transported to Earth and in the removal of the

 spacesuit; only the body's being frozen solid during these

 operations had prevented the situation from being even worse. That

 was when somebody had thought of Felix Borlan at IDCC and an in-

 strument being developed in England that could display the insides

 of things. The result had been Caldwell's visit to Portland.

 Inside the first laboratory it was dark. Researchers were using

 binocular microscopes to study sets of photographic transparencies

 arranged on several glass-topped tables, illuminated from below.

 Danchekker selected some plates from a pile and, motioning the

 others to follow, made his way over to the far wall. He positioned

 the first three of the plates on an eye-level viewing screen,

 snapped on the screen light, and stepped back to join the expectant

 semicircle. The plates were X-ray images showing the front and side

 views of a skull. Five faces, thrown into sharp relief against the

 darkness of the room behind, regarded the screen in solemn silence.

 At last Danchekker moved a pace forward, at the same time half

 turning toward them.

 "I need not, I feel, tell you who this is." His manner was somewhat

 stiff and formal. "A skull, fully human in every detail-as far as

 it is possible to ascertain by X rays, anyway." Danchekker traced

 along the line of the jaw with a ruler he had picked up from one of

 the tables. "Note the formation of the teeth-on either side we see

 two incisors, one canine, two premolars, and three molars. This

 pattern was established quite early in the evolutionary line that

 leads to our present day anthropoids, including, of course, man. It

 distinguishes our common line of descent from other offshoots, such

 as the New World monkeys with a count of two, one, three, three."

 "Hardly necessary here," Hunt commented. "There's nothing apelike

 or monkeylike about that picture."

 "Quite so, Dr. Hunt," Danchekker returned with a nod. "The reduced

 canines, not interlocking with the upper set, and the particular

 pattern of the cusps-these are distinctly human characteristics.

 Note also the flatness of the lower face, the absence of any bony

 brow ridges. . . high forehead and sharply angled jaw.

 well-rounded braincase. These are all features of true man as we

 know him today, features that derive directly from his earlier

 ancestors. The significance of these details in this instance is

 that they demonstrate an example of true man, not something that

 merely bears a superficial resemblance to him."

 The professor took down the plates and momentarily flooded the room

 with a blaze of light. A muttered profanity from one of the

 scientists at the tables made him switch off the light hastily. He

 picked up three more plates, set them up on the screen, and

 switched on the light to reveal the side view of a torso, an arm,

 and a foot.

 "Again, the trunk shows no departure from the familiar human

 pattern. Same rib structure. . . broad chest with well-developed

 clavicles. . . normal pelvic arrangement. The foot is perhaps the

 most specialized item in the human skeleton and is responsible for

 man's uniquely powerful stride and somewhat peculiar gait. If you

 are familiar with human anatomy, you will find that this foot

 resembles ours in every respect."

 "I'll take your word for it," Hunt conceded, shaking his head.

 "Nothing remarkable, then."

 "The most significant thing, Dr. Hunt, is that nothing is

 remarkable."

 Danchekker switched off the screen and returned the plates to the

 pile. Caldwell turned to Hunt as they began walking back toward the

 door.

 "This kind of thing doesn't happen every day," he grunted. "An

 understandable reason for wanting some. . . er. . . irregular

 action, you would agree?"

 Hunt agreed.

 A passage, followed by a short flight of stairs and another

 passage, brought them to a set of double doors bearing the large

 red sign STERILE AREA. In the anteroom behind, they put on surgical

 masks, caps, gowns, gloves, and overshoes before passing out

 through another door at the opposite end.

 In the first section they came to, samples of skin and other

 tissues were being examined. By reintroducing the substances

 believed to have escaped over the centuries, specimens had been

 restored to what were hoped to be close approximations to their

 original conditions. In general, the findings merely confirmed that

 Charlie was as human chemically as he was structurally. Some

 unfamiliar enzymes had, however, been discovered. Dynamic computer

 simulation suggested that these were designed to assist in the

 breakdown of proteins unlike anything found in the diet of modern

 man. Danchekker was inclined to dismiss this peculiarity with the

 rather vague assertion that "Times change," a remark which Hunt

 appeared to find disturbing.

 The next laboratory was devoted to an investigation of the

 spacesuit and the various other gadgets and implements found on

 and around the body. The helmet was the first exhibit to be

 presented for inspection. Its back and crown were made of metal,

 coated dull black and extending forward to the forehead to leave a

 transparent visor extending from ear to ear. Danchekker held it up

 for them to see and pushed his hand up through the opening at the

 neck. They could see clearly the fingers of his rubber glove

 through the facepiece.

 "Observe," he said, picking up a powerful xenon flash lamp from the

 bench. He directed the beam through the facepiece, and a circle of

 the material immediately turned dark. They could see through the

 area around the circle that the level of illumination inside the

 helmet had not changed appreciably. He moved the lamp around and

 the dark circle followed it across the visor.

 "Built-in antiglare," Gray observed.

 "The visor is fabricated from a self-polarizing crystal,"

 Danchekker informed them. "It responds directly to incident light

 in a fashion that is linear up to high intensities. The visor is

 also effective with gamma radiation."

 Hunt took the helmet to examine it more closely. The blend of

 curves that made up the outside contained little of interest, but

 on turning it over he found that a section of the inner surface of

 the crown had been removed to reveal a cavity, empty except for

 some tiny wires and a set of fixing brackets.

 "That recess contained a complete miniature communications

 station," Danchekker supplied, noting his interest. "Those grilles

 at the sides concealed the speakers, and a microphone is built into

 the top, just above the forehead." He reached inside and drew down

 a small retractable binocular periscope from inside the top section

 of the helmet, which clicked into position immediately in front of

 where the eyes of the wearer would be. "Built-in video, too," he

 explained. "Controlled from a panel on the chest. The small hole in

 the front of the crown contained a camera assembly." Hunt continued

 to turn the trophy over in his hands, studying it from all angles

 in absorbed silence. Two weeks ago he had been sitting at his desk

 in Metadyne doing a routine job. Never in his wildest fantasies had

 he imagined that he would one day come to be holding in his hands

 something that might well turn out to be one of the most exciting

 discoveries of the century, if not in the whole of history. Even

 his agile mind was having difficulty taking it all in.

 "Can we see some of the electronics that were in here?" he asked

 after a while.

 "Not today," Caidwell replied. "The electronics are being studied

 at another location-that goes for most of what was in the backpack,

 too. Let's just say for now that when it came to molecular

 circuits, these guys knew their business."

 "The backpack is a masterpiece of precision engineering in

 miniature," Danchekker continued, leading them to another part of

 the laboratory. "The prime power source for all the equipment and

 heating has been identified, and is nuclear in nature. In addition,

 there was a water recirculation plant, life-support system, standby

 power and communications system, and oxygen liquefaction plant-all

 in that!" He held up the casing of the stripped-down backpack for

 them to see, then tossed it back on the bench. "Several other

 devices were also included, but their purpose is still obscure.

 Behind you, you will see some personal effects."

 The professor moved around to indicate an array of objects taken

 from the body and arranged neatly on another bench like museum

 exhibits.

 "A pen-not dissimilar to a familiar pressurized ballpoint type; the

 top may be rotated to change color." He picked up a collection of

 metallic strips that hinged into a casing, like the blades of a

 pocketknife. "We suspect that these are keys of some kind because

 they have magnetic codes written on their surfaces."

 To one side was a collection of what looked like crumpled pieces of

 paper, some with groups of barely discernible symbols written in

 places. Next to them were two pocket-size books, each about half an

 inch thick.

 "Assorted oddments," Danchekker said, looking along the bench. "The

 documents are made from a kind of plasticized fiber. Fragments of

 print and handwriting are visible in places-quite unintelligible,

 of course. The material has deteriorated severely and tends to

 disintegrate at the slightest touch." He nodded toward Hunt. "This

 is another area where we hope to learn as much as we can with the

 Trimagniscope before we risk anything else." He pointed to the

 remaining articles and listed them without further elaboration.

 "Pen-size torch; some kind of pocket flamethrower, we think; knife;

 pen-size electric pocket drill with a selection of bits in the

 handle; food and drink containers-they connect via valves to the

 tubes inside the lower part of the helmet;

 pocket folder, like a wallet-too fragile to open; changes of

 underclothes; articles for personal hygiene; odd pieces of metal,

 purpose unknown. There were also a few electronic devices in the

 pockets; they have been sent elsewhere along with the rest."

 The party halted on the way back to the door to gather around the

 scarlet spacesuit, which had been reassembled on a life-size dummy

 standing on a small plinth. At first sight the proportions of the

 figure seemed to differ subtly from those of an average man, the

 build being slightly on the stocky side and the limbs a little

 short for the height of about five feet, six inches. However, since

 the suit was not designed for a close fit, it was difficult to be

 sure. Hunt noticed the soles of the boots were surprisingly thick.

 "Sprung interior," Danchekker supplied, following his gaze.

 "What's that?"

 "It's quite ingenious. The mechanical properties of the sole

 material vary with applied pressure. With the wearer walking at

 normal speed, the sole would remain mildly flexible. Under impact,

 however-for example, if he jumped-it assumes the characteristics of

 a stiff spring. It's an ideal device for kangarooing along in lunar

 gravity-utilizing conditions of reduced weight but normal inertia

 to advantage."

 "And now, gentlemen," said Caldwell, who had been following events

 with evident satisfaction, "the moment I guess you've been waiting

 for-let's have a look at Charlie himself."

 An elevator took them down to the subterranean levels of the

 institute. They emerged into a somber corridor of white-tiled walls

 and white lights, and followed it to a large metal door. Danchekker

 pressed his thumb against a glass plate set into the wall and the

 door slid silently aside on recognition of his print. At the same

 time, a diffuse but brilliant white glow flooded the room inside.

 It was cold. Most of the walls were taken up by control panels,

 analytical equipment, and glass cabinets containing rows of

 gleaming instruments. Everything was light green, as in an

 operating theater, and gave the same impression of surgical

 cleanliness. A large table, supported by a single central pillar,

 stood to one side. On top of it was what looked like an oversize

 glass coffin. Inside that lay the body. Saying nothing, the

 professor led them across the room, his overshoes squeaking on the

 rubbery floor as he

 walked. The small group converged around the table and stared in

 silent awe at the figure before them.

 It lay half covered by a sheet that stretched from its lower chest

 to its feet. In these clinical surroundings, the gruesome impact of

 the sight that had leaped at them from the screen in Caldwell's

 office earlier in the day was gone. All that remained was an object

 of scientific curiosity. Hunt found it overwhelming to stand at

 arm's length from the remains of a being who had lived as part of a

 civilization, had grown and passed away, before the dawn of

 history. For what seemed a long time he stared mutely, unable to

 frame any intelligent question or comment, while speculations

 tumbled through his mind on the life and times of this strange

 creature. When he eventually jolted himself back to the present, he

 realized that the professor was speaking again.

 ". . . Naturally, we are unable to say at this stage if it was

 simply a genetic accident peculiar to this individual or a general

 characteristic of the race to which he belonged, but measurements

 of the eye sockets and certain parts of the skull indicate that,

 relative to his size, his eyes were somewhat larger than our own.

 This suggests that he was not accustomed to sunlight as bright as

 ours. Also, note the length of the nostrils. Allowing for shrinkage

 with age, they are constructed to provide a longer passage for the

 prewarming of air. This suggests that he came from a relatively

 cool climate. . . the same thing can be observed in modern

 Eskimos." Danchekker made a sweeping gesture that took in the whole

 length of the body. "Again, the rather squat and stocky build is

 consistent with the idea of a cool native environment. A fat, round

 object presents less surface area per unit volume than a long, thin

 one and thus loses less heat. Contrast the compact build of the

 Eskimo with the long limbs and lean body of the Negro. We know that

 at the time Charlie was alive the Earth was just entering the last

 cold period of the Pleistocene Ice Age. Life forms in existence at

 that time would have had about a million years to adapt to the

 cold. Also, there is strong reason to believe that ice ages are

 caused by a reduction in the amount of solar radiation falling on

 Earth, brought about by the Sun and planets passing through

 exceptionally dusty patches of space. For example, ice ages occur

 approximately every two hundred and fifty million years; this is

 also the period of rotation of our galaxy-surely more than mere

 coincidence. Thus, this being's evident adaptation to cold, the sug

 gestion of a lower level of daylight, and his established age all

 correlate well."

 Hunt looked at the professor quizzically. "You're pretty sure

 already, then, that he's from Earth?" he said in a tone of mild

 surprise. "I mean-it's early days yet, surely?"

 Danchekker drew back his head disdainfully and screwed up his

 eyebrows to convey a shadow of irritation. "Surely it is quite

 obvious, Dr. Hunt." The tone was that of a professor reproaching an

 errant student. "Consider the things we have observed: the teeth,

 the skull, the bones, the types and layout of organs. I have

 deliberately drawn attention to these details to emphasize his

 kinship to ourselves. It is clear that his ancestry is the same as

 ours." He waved his hand to and fro in front of his face. "No,

 there can be no doubt whatsoever. Charlie evolved from the same

 stock as modern man and all the other terrestrial primates."

 Gray looked dubious. "Well, I dunno," he said. "I think Vic's got a

 point. I mean, if his lot did come from Earth, you'd have expected

 someone to have found out about it before now, wouldn't you?"

 Danchekker sighed with an overplay of indifference. "If you wish to

 doubt my word, you have, of course, every right to do so," he said.

 "However, as a biologist and an anthropologist, I for my part see

 more than sufficient evidence to support the conclusions I have

 stated."

 Hunt seemed far from satisfied and started to speak again, but

 Caidwell intervened.

 "Cool it, you guys. D'you think we haven't had enough arguments

 like this around here for the last few weeks?"

 "I really think it's about time we had some lunch," Lyn Garland

 interrupted with well-timed tact.

 Danchekker turned abruptly and began walking back toward the door,

 reciting statistics on the density of body hair and the thickness

 of subdermal layers of fat, apparently having dismissed the

 incident from his mind. Hunt paused to survey the body once more

 before turning to follow, and in doing so, he caught Gray's eye for

 an instant. The engineer's mouth twitched briefly at the corners;

 Hunt gave a barely perceptible shrug. Caldwell, still standing by

 the foot of the table, observed the brief exchange. He turned his

 head to look after Danchekker and then back again at the

 Englishmen, his eyes narrowing thoughtfully. At last he fell in

 a few paces behind the group, nodding slowly to himself and

 permitting a faint smile.

 The door slid silently into place and the room was once more

 plunged into darkness.

  

 chapter seven

  

 Hunt brought his hands up to his shoulders, stretched his body back

 over his chair, and emitted a long yawn at the ceiling of the

 laboratory. He held the position for a few seconds, and then

 collapsed back with a sigh. Finally he rubbed his eyes with his

 knuckles, hauled himself upright to face the console in front of

 him once more, and returned his gaze to the three-foot-high wall of

 the cylindrical glass tank by his side.

 The image on the Trimagniscope tube was an enlarged view of one of

 the pocket-size books found on the body, which Danchekker had shown

 them on their first day in Houston three weeks before. The book

 itself was enclosed in the scanner module of the machine, on the

 far side of the room. The scope was adjusted to generate a view

 that followed the change in density along the boundary surface of

 the selected page, producing an image of the lower section of the

 book only; it was as if the upper part had been removed, like a cut

 deck of cards. Because of the age and condition of the book,

 however, the characters on the page thus exposed tended to be of

 poor quality and in some places were incomplete. The next step

 would be to scan the image optically with TV cameras and feed the

 encoded pictures into the Navcomms computer complex. The raw input

 would then be processed by pattern recognition techniques and

 statistical techniques to produce a second, enhanced copy with many

 of the missing character fragments restored.

 Hunt cast his eye over the small monitor screens on his console,

 each of which showed a magnified view of a selected area of the

 page, and tapped some instructions into his keyboard.

 "There's an unresolved area on monitor five," he announced.

 "Cursors read X, twelve hundred to thirteen eighty; Y, nine ninety

 and, ah, ten seventy-five."

 Rob Gray, seated at another console a few feet away and almost

 surrounded by screens and control panels, consulted one of the

 numerical arrays glowing before him.

 "Z mod's linear across the field," he advised. "Try a block

 elevate?"

 "Can do. Give it a try."

 "Setting Z step two hundred through two ten . . . increment point

 one. . . step zero point five seconds."

 "Check." Hunt watched the screen as the surface picked out through

 the volume of the book became distorted locally and the picture on

 the monitor began to change.

 "Hold it there," he called. Gray hit a key. "Okay?"

 Hunt contemplated the modified view for a while.

 "The middle of the element's clear now," he pronounced at last.

 "Fix the new plane inside forty percent. I still don't like the

 strip around it, though. Give me a vertical slice through the

 center point."

 "Which screen d'you want it on?"

 "Ah. . . number seven."

 "Coming up."

 The curve, showing a cross section of the page surface through the

 small area they were working on, appeared on Hunt's console. He

 studied it for awhile, then called:

 "Run an interpolation across the strip. Set thresholds of, say,

 minus five and thirty-five percent on Y."

 "Parameters set . . . Interpolator running . . . run complete,"

 Gray recited. "Integrating into scan program now." Again the

 picture altered subtly. There was a noticeable improvement.

 "Still not right around the edge," Hunt said. "Try weighting the

 quarter and three-quarter points by plus ten. If that doesn't work,

 we'll have to break it down into isodepth bands."

 "Plus ten on point two five zero and point seven five zero," Gray

 repeated as he operated the keys. "Integrated. How's it look?"

 On the element of surface displayed on Hunt's monitor, the

 fragments of characters had magically assembled themselves into

 recognizable shapes. Hunt nodded with satisfaction.

 "That'll do. Freeze it in. Okay-that clears that one. There's

 another messy patch up near the top right. Let's have a go at that

 next."

 * * *

 Life had been reduced to much this kind of pattern ever since the

 day the installation of the scope was completed. They had spent the

 first week obtaining a series of cross-sectional views of the body

 itself. This exercise had proved memorable on account of the mild

 discomfort and not so mild inconvenience of having to work in

 electrically heated suits, following the medical authority's

 insistence that Charlie be kept in a refrigerated environment. It

 had proved something of an anticlimax. The net results were that,

 inside as well as out, Charlie was surprisingly-or not so

 surprisingly, depending on one's point of view-human. During the

 second week they began examining the articles found on the body,

 especially the pieces of "paper" and the pocket books. This

 investigation had proved more interesting.

 Of the symbols contained in the documents, numerals were the first

 to be identified. A team of cryptographers, assembled at Naycomms

 HO, soon worked out the counting system, which turned out to be

 based on twelve digits rather than ten and employed a positional

 notation with the least significant digit to the left. Deciphering

 the nonnumeric symbols was proving more difficult. Linguists from

 institutions and universities in several countries had linked into

 Houston and, with the aid of batteries of computers, were

 attempting to make some sense of the language of the Lunarians, as

 Charlie's race had come to be called in commemoration of his place

 of discovery. So far their efforts had yielded little more than

 that the Lunarian alphabet comprised thirty-seven characters, was

 written horizontally from right to left, and contained the

 equivalent of upper-case characters.

 Progress, however, was not considered to be bad for so short a

 time. Most of the people involved were aware that even this much

 could never have been achieved without the scope, and already the

 names of the two Englishmen were well-known around the division.

 The scope attracted a lot of interest among the UNSA technical

 personnel, and most evenings saw a stream of visitors arriving at

 the Ocean Hotel, all curious to meet the coinventors of the

 instrument and to learn more about its principles of operation.

 Before long, the Ocean became the scene of a regular debating

 society where anybody who cared to could give free rein to his

 wildest speculations concerning the Charlie mystery, free from the

 constraints of professional caution and skepticism that applied

 during business hours.

 Caldwell, of course, knew everything that was said by anybody at

 the Ocean and what everybody else thought about it, since Lyn

 Garland was present on most nights and represented the next best

 thing to a hot line back to the HQ building. Nobody minded that

 much-after all, it was only part of her job. They minded even less

 when she began turning up with some of the other girls from

 Naycomms in tow, adding a refreshing party atmosphere to the whole

 proceedings. This development met with the full approval of the

 visitors from out-of-town; however, it had led to somewhat strained

 relationships on the domestic front for one or two of the locals.

 Hunt jabbed at the keyboard for the last time and sat back to

 inspect the image of the completed page.

 "Not bad at all," he said. "That one won't need much enhancement."

 "Good," Gray agreed. He lit a cigarette and tossed the pack across

 to Hunt without being asked. "Optical encoding's finished," he

 added, glancing at a screen. "That's number sixty-seven tied up."

 He rose from his chair and moved across to stand beside Hunt's

 console to get a better view of the image in the tank. He looked at

 it for a while without speaking.

 "Columns of numbers," he observed needlessly at last. "Looks like

 some kind of table."

 "Looks like it. . ." Hunt's voice sounded far away.

 "Mmm. . . rows and columns. . . thick lines and thin lines Could be

 anything-mileage chart, wire gauges, some sort of

 timetable. Who knows?"

 Hunt made no reply but continued to blow occasional clouds of smoke

 at the glass, cocking his head first to one side and then to the

 other.

 "None of the numbers there are very large," he commented after a

 while. "Never more than two positions in any place. That gives us

 what in a duodecimal system? One hundred and fortythree at the

 most." Then as an afterthought, "I wonder what the biggest is."

 "I've got a table of Lunarian-decimal equivalents somewhere. Any

 good?"

 "No, don't bother for now. It's too near lunch. Maybe we could have

 a look at it over a beer tonight at the Ocean."

 'I can pick out their one and two," Gray said. "And three and Hey!

 What do you know-look at the right-hand columns of

 those big boxes. Those numbers are in ascending order!"

 "You're right. And look-the same pattern repeats over and over in

 every one. It's some kind of cyclic array." Hunt thought for a

 moment, his face creased in a frown of concentration. "Something

 else, too-see those alphabetic groups down the sides? The same

 groups reappear at intervals all across the page . . ." He broke

 off again and rubbed his chin.

 Gray waited perhaps ten seconds. "Any ideas?"

 "Dunno. . . Sets of numbers starting at one and increasing by one

 every time. Cyclic. . . an alphabetic label tagged on to each

 repeating group. The whole pattern repeating again inside bigger

 groups, and the bigger groups repeat again. Suggests some sort of

 order. Sequence. . ."

 His mumblings were interrupted as the door opened behind them. Lyn

 Garland walked in.

 "Hi, you guys. What's showing today?" She moved over to stand

 between them and peered into the tank. "Say, tables! How about

 that? Where'd they come from, the books?"

 "Hello, lovely," Gray said with a grin. "Yep." He nodded in the

 direction of the scanner.

 "Hi," Hunt answered, at last tearing his eyes away from the image.

 "What can we do for you?"

 She didn't reply at once, but continued staring into the tank.

 "What are they? Any ideas?"

 "Don't know yet. We were just talking about it when you came in."

 She marched across the lab and bent over to peer into the top of

 the scanner. The smooth, tanned curve of her leg and the proud

 thrust of her behind under her thin skirt drew an exchange of

 approving glances from the two English scientists. She came back

 and studied the image once more.

 "Looks like a calendar, if you ask me," she told them. Her voice

 left no room for dissent.

 Gray laughed. "Calendar, eh? You sound pretty sure of it. What's

 this-a demonstration of infaffible feminine intuition or

 something?" He was goading playfully.

 She turned to confront him with out-thrust jaw and hands

 planted firmly on hips. "Listen, Limey-I've got a right to an

 opinion, okay? So, that's what I think it is. That's my opinion."

 "Okay, okay." Gray held up his hands. "Let's not start the War of

 Independence all over again. I'll note it in the lab file: 'Lyn

 thinks it's a-'"

 "Holy Christ!" Hunt cut him off in midsentence. He was staring

 wide-eyed at the tank. "Do you know, she could be right! She could

 just be bloody right!"

 Gray turned back to face the side of the tank. "How come?"

 "Well, look at it. Those larger groups could be something like

 months, and the labeled sets that keep repeating inside them could

 be weeks made up of days. After all, days and years have to be

 natural units in any calendar system. See what I mean?"

 Gray looked dubious. "I'm not so sure," he said slowly. "It's

 nothing like our year, is it? I mean, there's a hell of a lot more

 than three hundred sixty-five numbers in that lot, and a lot more

 than twelve months, or whatever they are-aren't there?"

 "I know. Interesting?"

 "Hey. I'm still here," said a small voice behind them. They moved

 apart and half turned to let her in on the proceedings.

 "Sorry," Hunt said. "Getting carried away." He shook his head and

 regarded her with an expression of disbelief.

 "What on Earth made you say a calendar?"

 She shrugged and pouted her lips. "Don't know, really. The book

 over there looks like a diary. Every diary I ever saw had calendars

 in it. So, it had to be a calendar."

 Hunt sighed. "So much for scientific method. Anyway, let's run a

 shot of it. I'd like to do some sums on it later." He looked back

 at Lyn. "No-on second thought, you run it. This is your discovery."

 She frowned at him suspiciously. "What d'you want me to do?" "Sit

 down there at the master console. That's right. Now activate the

 control keyboard. . . Press the red button-that one."

 "What do I do now?"

 "Type this: FC comma DACCO seven slash PCH dot P sixty-seven slash

 HCU dot one. That means 'functional control mode, data access

 program subsystem number seven selected, access data file reference

 "Project Charlie, Book one," page sixtyseven, optical format,

 output on hard copy unit, one copy."

 "It does? Really? Great!"

 She keyed in the commands as Hunt repeated them more slowly. At

 once a hum started up in the hard copier, which stood next to the

 scanner. A few seconds later a sheet of glossy paper flopped into

 the tray attached to the copier's side. Gray walked over to collect

 it.

 "Perfect," he announced.

 "This makes me a scope expert, too," Lyn informed them brightly.

 Hunt studied the sheet briefly, nodded, and slipped it into a

 folder lying on top of the console.

 "Doing some homework?" she asked.

 "I don't like the wallpaper in my hotel room."

 "He's got the theory of relativity all around the bedroom in his

 flat in Wokingham," Gray confided, ". . . and wave mechanics in the

 kitchen."

 She looked from one to the other curiously. "Do you know, you're

 crazy. Both of you-you're both crazy. I was always too polite to

 mention it before, but somebody has to say it."

 Hunt gave her a solemn look. "You didn't come all the way over here

 to tell us we're crazy," he pronounced.

 "Know something-you're right. I had to be in Westwood anyway. A

 piece of news just came in this morning that I thought might

 interest you. Gregg's been talking to the Soviets. Apparently one

 of their materials labs has been doing tests on some funny pieces

 of metal alloy they got hold of-all sorts of unusual properties

 nobody's ever seen before. And guess what-they dug them up on the

 Moon, somewhere near Mare Imbrium. And-when they ran some dating

 tests, they came up with a figure of about fifty thousand years !

 How about that! Interested?"

 Gray whistled.

 "It had to be just a matter of time before something else turned

 up," Hunt said, nodding. "Know any more details?"

 She shook her head. "Fraid not. But some of the guys might be able

 to fill you in a bit more at the Ocean tonight. Try Hans if he's

 there; he was talking a lot to Gregg about it earlier."

 Hunt looked intrigued but decided there was little point in

 pursuing the matter further for the time being.

 "How is Gregg?" he asked. "Has he tried smiling lately?"

 "Don't be mean," she reproached him. "Gregg's okay. He's

 busy, that's all. D'you think he didn't have enough to worry about

 before all this blew up?"

 Hunt didn't dispute it. During the few weeks that had passed, he

 had seen ample evidence of the massive resources Caldwell was

 marshaling from all around the globe. He couldn't help but be

 impressed by the director's organizational ability and his ruthless

 efficiency when it came to annihilating opposition. There were

 other things, however, about which Hunt harbored mild personal

 doubts.

 "How's it all going, then?" he asked. His tone was neutral. It did

 not escape the girl's sharply tuned senses. Her eyes narrowed

 almost imperceptibly.

 "Well, you've seen most of the action so far. How do you think it's

 going?"

 He tried a sidestep to avoid her deliberate turning around of the

 question.

 "None of my business, really, is it? We're just the machine minders

 in all this."

 "No, really-I'm interested. What do you think?"

 Hunt made a great play of stubbing out his cigarette. He frowned

 and scratched his forehead.

 "You've got rights to opinions, too," she persisted. "Our

 Constitution says so. So, what's your opinion?"

 There was no way off the hook, or of evading those big brown eyes.

 "There's no shortage of information turning up," he conceded at

 last. "The infantry is doing a good job . . ." He let the rider

 hang.

 "But what . . . Hunt sighed.

 "But. . . the interpretation. There's something too dogmatic- too

 rigid-about the way the big names higher up are using the

 information. It's as if they can't think outside the ruts they've

 thought inside for years. Maybe they're overspecialized-won't admit

 any possibility that goes against what they've always believed."

 "For instance?"

 "Oh, I don't know. . . Well, take Danchekker, for one. He's always

 accepted orthodox evolutionary theory-all his life, I suppose;

 therefore, Charlie must be from Earth. Nothing else is possi

 ble. The accepted theory must be right, so that much is fixed; you

 have to work everything else to fit in with that."

 "You think he's wrong? That Charlie came from somewhere else?"

 "Hell, I don't know. He could be right. But it's not his conclusion

 that I don't like; it's his way of getting there. This problem's

 going to need more flexibility before it's cracked."

 Lyn nodded slowly to herself, as if Hunt had confirmed something.

 "I thought you might say something like that," she mused. "Gregg

 will be interested to hear it. He wondered the same thing, too."

 Hunt had the feeling that the questions had been more than just an

 accidental turn of conversation. He looked at her long and hard.

 "Why should Gregg be interested?"

 "Oh, you'd be surprised. Gregg knows a lot about you two.

 He's interested in anything anybody has to say. It's people, see-

 Gregg's a genius with people. He knows what makes them tick.

 It's the biggest part of his job."

 "Well, it's a people problem he's got," Hunt said. "Why doesn't he

 fix it?"

 Suddenly Lyn switched moods and seemed to make light of the whole

 subject, as if she had learned all she needed to for the time

 being.

 "Oh, he will-when he gets the feeling that the time's right. He's

 very good with timing, too." She decided to finish the matter

 entirely. "Anyhow, it's time for lunch." She stood up and slipped a

 hand through an arm on either side. "How about two crazy Limeys

 treating a poor girl from the Colonies to a drink?"

  

 chapter eight

  

 The progress meeting, in the main conference room of the Naycomms

 Headquarters building, had been in session for just over two hours.

 About two dozen persons were seated or sprawled around the large

 table that stood in the center of the room, by now reduced to a

 shambles of ifies, papers, overflowing ashtrays, and half-empty

 glasses.

 Nothing really exciting had emerged so far. Various speakers had

 reported the results of their latest tests, the sum total of their

 conclusions being that Charlie's circulatory, respiratory, nervous,

 endocrine, lymphatic, digestive, and every other system anybody

 could think of were as normal as those of anyone sitting around the

 table. His bones were the same, his body chemistry was the same,

 his blood was a familiar grouping. His brain capacity and

 development were within the normal range for Homo sapiens, and

 evidence suggested that he had been right-handed. The genetic codes

 carried in his reproductive cells had been analyzed; a computer

 simulation of combining them with codes donated by an average human

 female had confirmed that the offspring of such a union would have

 inherited a perfectly normal set of characteristics.

 Hunt tended to remain something of a passive observer of the

 proceedings, conscious of his status as an unofficial guest and

 wondering from time to time why he had been invited at all. The

 only reference made to him so far had been a tribute in Caldwell's

 opening remarks to the invaluable aid rendered by the

 Trimagniscope; apart from the murmur of agreement that had greeted

 this comment, no further mention had been made of either the

 instrument or its inventor. Lyn Garland had told him: "The

 meeting's on Monday, and Gregg wants you to be there to answer

 detailed questions on the scope." So here he was. Thus far, nobody

 had wanted to know anything detailed about the scope-only about the

 data it produced. Something gave him the uneasy feeling there was

 an ulterior motive lurking somewhere.

 ~rter aweiiing on Charlie's computerized, mathematical sex life,

 the chair considered a suggestion, put forward by a Texas

 planetologist sitting opposite Hunt, that perhaps the Lunarians

 came from Mars. Mars had reached a later phase of planetary

 evolution than Earth and possibly had evolved inteffigent life

 earlier, too. Then the arguments started. Martian exploration went

 right back to the 1970s; UNSA had been surveying the surface from

 satellites and manned bases for years. How come no sign of any

 Lunarian civilization had showed up? Answer: We've been on the Moon

 a hell of a lot longer than that and the first traces have only

 just shown up there. So you could expect discovery to occur later

 on Mars. Objection: If they came from Mars, then their civilization

 developed on Mars. Signs of a whole civilization should be far more

 obvious than signs of visits to a place like Earth's Moon-

 therefore the Lunarians should have been detected a lot sooner on

 Mars. Answer: Think about the rate of erosion on the Martian

 surface. The signs could be largely wiped out or buried. At least

 that could account for there not being any signs on Earth. Somebody

 then pointed out that this did not solve the problem-all it did was

 shift it to another place. If the Lunarians came from Mars,

 evolutionary theory was still in just as big a mess as ever.

 So the discussion went on.

 Hunt wondered how Rob Gray was getting on back at Westwood. They

 now had a training schedule to fit in on top of their normal daily

 data-collection routine. A week or so before, Caldwell had informed

 them that he wanted four engineers from Naycomms fully trained as

 Trimagniscope operators. His explanation, that this would allow

 round-the-clock operation of the scope and hence better

 productivity from it, had not left Hunt convinced; neither had his

 further assertion that Navcomms was going to buy itself some of the

 instruments but needed to get some in-house expertise while they

 had the opportunity.

 Maybe Caldwell intended setting up Navcomms as an independent and

 self-sufficient scope-operating facility. Why would he do that? Was

 Forsyth-Scott or somebody else exerting pressure to get Hunt back

 to England? If this was a prelude to shipping him back, the scope

 would obviously stay in Houston. That meant that the first thing

 he'd be pressed into when he got back would be a panic to get the

 second prototype working. Big deal!

 The meeting eventually accepted that the Martian-origin theory

 created more problems than it solved and, anyway, was pure

 speculation. Last rites in the form of "No substantiating evidence

 offered" were pronounced, and the corpse was quietly laid to rest

 under the epitaph In Abeyance, penned in the "Action" columns of

 the memoranda sheets around the table.

 A cryptologist then delivered a long rambling account of the

 patterns of character groupings that occurred in Charlie's personal

 documents. They had already completed preliminary processing of all

 the individual papers, the contents of the wallet, and one of the

 books; they were about half way through the second. There were many

 tables, but nobody knew yet what they meant; some structured lines

 of symbols suggested mathematical formulas; certain page and

 section headings matched entries in the text. Some character

 strings appeared with high frequency, some with less; some were

 concentrated on a few pages, while others were evenly spread

 throughout. There were lots of figures and statistics. Despite the

 enthusiasm of the speaker, the mood of the room grew heavy and the

 questions fewer. They knew he was a bright guy; they wished he'd

 stop telling them.

 At length, Danchekker, who had been noticeably silent through most

 of the proceedings and appeared to be growing increasingly

 impatient as they continued, obtained leave from the chair to

 address the meeting. He rose to his feet, clasped his lapels, and

 cleared his throat. "We have devoted as much time as can be excused

 to exploring improbable and far-flung suggestions which, as we have

 seen, turn out to be fallacious." He spoke confidently, taking in

 the length of the table with side-to-side swings of his body. "The

 time has surely come, gentlemen, for us to daily no longer, but to

 concentrate our efforts on what must be the only viable line of

 reasoning open to us. I state, quite categorically, that the race

 of beings to whom we have come to refer as the Lunarians originated

 here, on Earth, as did the rest of us. Forget all your fantasies of

 visitors from other worlds, interstellar travelers, and the like.

 The Lunarians were simply products of a civilization that developed

 here on our own planet and died out for reasons we have yet to

 determine. What, after all, is so strange about that? Civilizations

 have grown and passed away in the brief span of our more orthodox

 history, and no doubt others will continue the pattern. This

 conclusion follows from comprehensive and consistent evidence and

 from the proven principles of the various natural sci

 ences. It requires no invention, fabrication, or supposition, but

 derives directly from unquestionable facts and the straightforward

 application of established methods of inference!' He paused and

 cast his eyes around the table to invite comment.

 Nobody commented. They already knew his arguments. Danchekker,

 however, seemed about to go through it all again. Evidently he had

 concluded that attempts to make them see the obvious by appealing

 to their powers of reason alone were not enough; his only resort

 then was insistent repetition until they either concurred or went

 insane.

 Hunt leaned back in his chair, took a cigarette from a box lying

 nearby on the table, and tossed his pen down on his pad. He still

 had reservations about the professor's dogmatic attitude, but at

 the same time he was aware that Danchekker's record of academic

 distinction was matched by those of few people alive at the time.

 Besides, this wasn't Hunt's field. His main objection was something

 else, a truth he accepted for what it was and made no attempt to

 fool himself by rationalizing: Everything about Danchekker

 irritated him. Danchekker was too thin; his clothes were too

 old-fashioned-he carried them as if they had been hung on to dry.

 His anachronistic gold-rimmed spectacles were ridiculous. His

 speech was too formal. He had probably never laughed in his life. A

 skull vacuum-packed in skin, Hunt thought to himself.

 "Allow me to recapitulate," Danchekker continued. "Homo

 sapiens-modern man-belongs to the phylum Vertebrata. So, also, do

 all the mammals, fish, birds, amphibians, and reptiles that have

 ever walked, crawled, flown, slithered, or swum in every corner of

 the Earth. All vertebrates share a common pattern of basic

 architecture, which has remained unchanged over millions of years

 despite the superficial, specialized adaptations that on first

 consideration might seem to divide the countless species we see

 around us.

 "The basic vertebrate pattern is as follows: an internal skeleton

 of bone or cartilage and a vertebral colunm. The vertebrate has two

 pairs of appendages, which may be highly developed or degenerate,

 likewise a tail. It has a ventrally located heart, divided into two

 or more chambers, and a closed circulatory system of blood made up

 of red cells containing hemoglobin. It has a dorsal nerve cord

 which bulges at one end into a five-part brain contained in a head.

 It also has a body cavity that contains most of its

 vital organs and its digestive system. All vertebrates conform to

 these rules and are thereby related."

 The professor paused and looked around as if the conclusion were

 too obvious to require summarizing. "In other words, Charlie's

 whole structure shows him to be directly related to a million and

 one terrestrial animal species, extinct, alive, or yet to come.

 Furthermore, all terrestrial vertebrates, including ourselves and

 Charlie, can be traced back through an unbroken succession of

 intermediate fossils as having inherited their common pattern from

 the earliest recorded ancestors of the vertebrate

 line"-Danchekker's voice rose to a crescendo-"from the first boned

 fish that appeared in the oceans of the Devonian period of the

 Paleozoic era, over four hundred million years ago!" He paused for

 this last to take hold and then continued. "Charlie is as human as

 you or i in every respect. Can there be any doubt, then, that he

 shares our vertebrate heritage and therefore our ancestry? And if

 he shares our ancestry, then there is no doubt that he also shares

 our place of origin. Charlie is a native of planet Earth."

 Danchekker sat down and poured himself a glass of water. A hubbub

 of mixed murmurings and mutterings ensued, punctuated by the

 rustling of papers and the clink of water glasses. Here and there,

 chairs creaked as cramped limbs eased themselves into more

 comfortable positions. A metallurgist at one end of the table was

 gesturing to the man seated next to her. The man shrugged, showed

 his empty palms, and nodded his head in Danchekker's direction. She

 turned and called to the professor. "Professor Danchekker . . .

 Professor . . ." Her voice made itself heard. The background noise

 died away. Danchekker looked up. "We've been having a little

 argument here-maybe you'd like to comment Why couldn't Charlie have

 come from a parallel line of evolution somewhere else?"

 "I was wondering that, too," came another voice. Danchekker frowned

 for a moment before replying.

 "No. The point you are overlooking here, I think, is that the

 evolutionary process is fundamentally made up of random events.

 Every living organism that exists today is the product of a chain

 of successive mutations that has continued over millions of years.

 The most important fact to grasp is that each discrete mutation is

 in itself a purely random event, brought about by aberrations in

 genetic coding and the mixing of the sex cells from different par-

 ents. The environment into which the mutant is born dictates

 whether it will survive to reproduce its kind or whether it will

 die out. Thus, some new characteristics are selected for further

 miprovement, while others are promptly eradicated and still others

 are diluted away by interbreeding.

 "There are still people who find this principle difficult to accept

 -primarily, I suspect, because they are incapable of visualizing

 the implications of numbers and time scales beyond the ranges that

 occur in everyday life. Remember we are talking about billions of

 billions of combinations coming together over millions of years. "A

 game of chess begins with only twenty playable moves to choose

 from. At every move the choice available to the player is

 restricted, and yet, the number of legitimate positions that the

 board could assume after only ten moves is astronomical. Imagine,

 then, the number of permutations that could arise when the game

 continues for a billion moves and at each move the player has a

 billion choices open to him. This is the game of evolution. To

 suppose that two such independent sequences could result in end

 products that are identical would surely be demanding too much of

 our credulity. The laws of chance and statistics are quite firm

 when applied to sufficiently large numbers of samples. The laws of

 thermodynamics, for example, are nothing more than expressions of

 the probable behavior of gas molecules, yet the numbers involved

 are so large that we feel quite safe in accepting the postulates as

 rigid rules; no significant departure from them has ever been

 observed. The probabifity of the parallel line of evolulion that

 you suggest is less than the probability of heat flowing from the

 kettle to the fire, or of all the air molecules in this room

 crowding into one corner at the same time, causing us all to

 explode spontaneously. Mathematically speaking, yes-the possibility

 of parallelism is finite, but so indescribably remote that we need

 consider it no further."

 A young electronics engineer took the argument up at this point

 "Couldn't God get a look in?" he asked. "Or at least, some kind of

 guiding force or principle that we don't yet comprehend? Couldn't

 the same design be produced via different lines in different

 places?"

 Danchekker shook his head and smiled almost benevolently.

 "We are scientists, not mystics," he replied. "One of the funda

 mental principles of scientific method is that new and speculative

 hypotheses do not warrant consideration as long as the facts that

 are observed are adequately accounted for by the theories that

 already exist. Nothing resembling a universal guiding force has

 ever been revealed by generations of investigation, and since the

 facts observed are adequately explained by the accepted principles

 I have outlined, there is no necessity to invoke or invent

 additional causes. Notions of guiding forces and grand designs

 exist only in the mind of the misguided observer, not in the facts

 he observes."

 "But suppose it turns out that Charlie came from somewhere else,"

 the metallurgist insisted. "What then?"

 "Ah! Now, that would be an entirely different matter. If it should

 be proved by some other means that Charlie did indeed evolve

 somewhere else, then we would be forced to accept that parallel

 evolution had occurred as an observed and unquestionable fact.

 Since this could not be explained within the framework of

 contemporary theory, our theories would be shown to be woefully

 inadequate. That would be the time to speculate on additional

 influences. Then, perhaps, your universal guiding force might find

 a rightful place. To entertain such concepts at this stage,

 however, would be to put the cart fairly and squarely before the

 horse. In so doing, we would be guilty of a breach of one of the

 most fundamental of scientific principles."

 Somebody else tried to push the professor from a different angle.

 "How about convergent lines rather than parallel lines? Maybe the

 selection principles work in such a way that different lines of

 development converge toward the same optimum end product. In other

 words, although they start out in different directions, they will

 both eventually hit on the same, best final design. Like . . ." He

 sought for an analogy. "Like sharks are fish and dolphins are

 mammals. They both came from different origins but ended up hitting

 on the same general shape."

 Danchekker again shook his head firmly. "Forget the idea of

 perfection and best end products," he said. "You are unwittingly

 falling into this trap of assuming a grand design again. The human

 form is not nearly as perfect as you perhaps imagine. Nature does

 not produce best solutions-it will try any solution. The only test

 applied is that it be good enough to survive and reproduce itself.

 Far more species have proved unsuccessful and become extinct

 than have survived-far, far more. It is easy to contemplate a kind

 of preordained striving toward something perfect when this

 fundamental fact is overlooked-when looking back dawn the tree, as

 it were, with the benefit of hindsight from our particular

 successful branch and forgetting the countless other branches that

 got nowhere.

 "No, forget this idea of perfection. The developments we see in the

 natural world are simply cases of something good enough to do the

 job. Usually, many conceivable alternatives would be as good, and

 some better.

 "Take as an example the cusp pattern on the first lower molar tooth

 of man. It is made up of a group of five main cusps with a complex

 of intervening grooves and ridges that help to grind up food. There

 is no reason to suppose that this particular pattern is any more

 efficient than any one of many more that might be considered. This

 particular pattern, however, first occurred as a mutation somewhere

 along the ancestral line leading toward man and has been passed on

 ever since. The same pattern is also found on the teeth of the

 great apes, indicating that we both inherited it from some early

 common ancestor where it happened through pure chance.

 "Charlie has human cusp patterns on all his teeth.

 "Many of our adaptations are far from perfect. The arrangement of

 internal organs leaves much to be desired, owing to our inheriting

 a system originally developed to suit a horizontal and not an

 upright posture. In our respiratory system, for example, we find

 that the wastes and dirt that accumulate in the throat and nasal

 regions drain inside and not outside, as happened originally, a

 prime cause of many bronchial and chest complaints not suffered by

 four-footed animals. That's hardly perfection, is it?'~' Danchekker

 took a sip of water and made an appealing gesture to the room in

 general.

 "So, we see that any idea of convergence toward the ideal is not

 supported by the facts. Charlie exhibits all our faults and

 imperfections as well as our improvements. No, I'm sorry-I

 appreciate that these questions are voiced in the best tradition of

 leaving no possibility unprobed and I commend you for them, but

 really, we must dismiss them."

 Silence enveloped the room at his concluding words. On all

 sides, everybody seemed to be staring thoughtfully through the

 table, through the walls, or through the ceiling.

 Caldwell placed his hands on the table and looked around until

 satisfied that nobody had anything to add.

 "Looks like evolution stays put for a while longer," he grunted.

 "Thank you, Professor."

 Danchekker nodded without looking up.

 "However," Caldwell continued, "the object of these meetings is to

 give everyone a chance to talk freely as well as listen. So far,

 some people haven't had much to say-especially one or two of the

 newcomers." Hunt realized with a start that Caidwell was looking

 straight at him. "Our English visitor, for example, whom most of

 you already know. Dr. Hunt, do you have any views that we ought to

 hear about. . . ?"

 Next to Caldwell, Lyn Garland was making no attempt to conceal a

 wide smile. Hunt took a long draw at his cigarette and used the

 delay to collect his thoughts. In the time it took for him to

 coolly emit one long, diffuse cloud of smoke and ifick his hand at

 the ashtray, all the pieces clicked together in his brain with the

 smooth precision of the binary regiments parading through the

 registers of the computers downstairs. Lyn's persistent

 cross-examinations, her visits to the Ocean, his presence

 here-Caldwell had found a catalyst.

 Hunt surveyed the array of attentive faces. "Most of what's been

 said reasserts the accepted principles of comparative anatomy and

 evolutionary theory. Just to clear the record for anyone with

 misleading ideas, I've no intention of questioning them. However,

 the conclusion could be summed up by saying that since Charlie

 comes from the same ancestors as we do, he must have evolved on

 Earth the same as we did."

 "That is so," threw in Danchekker.

 "Fine," Hunt replied. "Now, all this is really your problem, not

 mine, but since you've asked me what I think, I'll state the

 conclusion another way. Since Charlie evolved on Earth, the

 civilization he was from evolved on Earth. The indications are that

 his culture was about as advanced as ours, maybe in one or two

 areas slightly more advanced. So, we ought to find no end of traces

 of his people. We don't. Why not?"

 All heads turned toward Danchekker.

 The professor sighed. "The only conclusion left open to us is

 that whatever traces were left have been erased by the natural

 processes of weathering and erosion," he said wearily. "There are

 several possibilities: A catastrophe of some sort could have wiped

 them out to the extent that there were no traces; or possibly their

 civilization existed in regions which today are submerged beneath

 the oceans. Further searching will no doubt produce solutions to

 this question."

 "If any catastrophe as violent as that occurred so recently, we

 would already know about it," Hunt pointed out. "Most of what was

 land then is still land today, so I can't see them sinking into the

 ocean somewhere, either; besides, you've only to look at our

 civilization to see it's not confined to localized areas-it's

 spread all over the globe. And how is it that in spite of all the

 junk that keeps turning up with no trouble at all from primitive

 races from around the same time-bones, spears, clubs, and so

 on-nobody has ever found a single example of anything related to

 this supposed technologically advanced culture? Not a screw, or a

 piece of wire, or a plastic washer. To me, that doesn't make

 sense."

 More murmuring broke out to mark the end of Hunt's critique.

 "Professor?" Caldwell invited comment with a neutral voice.

 Danchekker compressed his mouth into a grimace. "Oh, I agree, I

 agree. It is surprising-very surprising. But what alternative are

 you proposing?" His voice took on a note of sarcasm. "Do you

 suggest that man and all the animals came to Earth in some enormous

 celestial Noah's Ark?" He laughed. "If so, the fossil record of a

 hundred million years disproves you."

 "Impasse." The comment came from Professor Schorn, an authority on

 comparative anatomy, who had arrived from Stuttgart a few days

 before.

 "Looks like it," Caldwell agreed.

 Danchekker, however, was not through. "Would Dr. Hunt care to

 answer my question?" he challenged. "Precisely what other place of

 origin is he suggesting?"

 "I'm not suggesting anywhere in particular," Hunt replied evenly.

 "What I am suggesting is that perhaps a more openminded approach

 might be appropriate at this stage. After all, we've only just

 found Charlie. This business will go on for years yet; there's

 bound to be a lot more information surfacing that we don't have

 right now. I think it's too early to be jumping ahead and

 predicting what the answers might be. Better just to keep on

 plodding along and using every scrap of data we've got to put

 together a picture of the place Charlie came from. It might turn

 out to be Earth. Then again, it might not."

 Caldwell led him on further. "How would you suggest we go about

 that?"

 Hunt wondered if this was a direct cue. He decided to risk it. "You

 could try taking a closer look at this." He drew a sheet of paper

 out from the folder in front of him and slid it across to the

 center of the table. The paper showed a complicated tabular

 arrangement of Lunarian numerals.

 "What's that?" asked a voice.

 "It's from one of the pocket books," Hunt replied. "I think the

 book is something not unlike a diary. I also believe that that"-he

 pointed at the sheet-"could well be a calendar." He caught a sly

 wink from Lyn Garland and returned it.

 "Calendar?"

 "How d'you figure that one?"

 "It's all gobbledygook."

 Danchekker stared hard at the paper for a few seconds. "Can you

 prove it's a calendar?" he demanded.

 "No, I can't. But I have analyzed the number pattern and can state

 that it's made up of ascending groups that repeat in sets and

 subsets. Also, the alphabetic groups that seem to label the major

 sets correspond to the headings of groups of pages further on-

 remarkably like the layout of a diary."

 "Hmmph! More likely some form of tabular page index."

 "Could be," Hunt granted. "But why not wait and see? Once the

 language has unraveled a bit more, it should be possible to

 cross-check a lot of what's here with items from other sources.

 This is the kind of thing that maybe we ought to be a little more

 open-minded about. You say Charlie comes from Earth; I say he

 might. You say this is not a calendar; I say it might be. In my

 estimation, an attitude like yours is too inflexible to permit an

 unbiased appraisal of the problem. You've already made up your mind

 what you want the answers to be."

 "Hear, hear!" a voice at the end of the table called.

 Danchekker colored visibly, but Caldwell spoke before he could

 reply.

 "You've analyzed the numbers-right?"

 "Right."

 ~uicay, supposing for now its a calendar-wnat more can you tell

 us?"

 Hunt leaned forward across the table and pointed at the sheet with

 his pen.

 "First, two assumptions. One: the natural unit of time on any world

 is the day-that is, the time it takes the planet to rotate on its

 axis. . ."

 "Assuming it rotates," somebody tossed in.

 "That was my second assumption. But the only cases we know of where

 there's no rotation-or where the orbital period equals the axial

 period, which amounts to the same thing-occur when a small body

 orbits close to a far more massive one and is swamped by

 gravitational tidal effects, like our Moon. For that to happen to a

 body the size of a planet, the planet would have to orbit very

 close to its parent star-too close for it to support any life

 comparable to our own."

 "Seems reasonable," Caldwell said, looking around the table.

 Various heads were nodding assent. "Where do we go from there?"

 "Okay," Hunt resumed. "Assuming it rotates and the day is its

 natural unit of time-if this complete table represents one full

 orbit around its sun, there are seventeen hundred days in its year,

 one entry for each."

 "Pretty long," someone hazarded.

 "To us, yes: at least, the year-to-day ratio is big. It could mean

 the orbit is large, the rotational period short, or perhaps a bit

 of both. Now look at the major number groups-the ones tagged with

 the heavy alphabetic labels. There are forty-seven of them. Most

 contain thirty-six numbers, but nine of them have thirty-seven-the

 first, sixth, twelfth, eighteenth, twenty-fourth, thirtieth,

 thirtysixth, forty-second, and forty-seventh. That seems a bit odd

 at first sight, but so would our system to someone unfamiliar with

 it. It suggests that maybe somebody had to do a bit of fiddling

 with it to make it work."

 "Mmm. . . like with our months."

 "Exactly. This is just the sort of juggling you have to do to get a

 sensible fit of our months into our year. It happens because

 there's no simple relationship between the orbital periods of

 planet and satellite; there's no reason why there should be. I'm

 guessing that if this is a calendar that relates to some other

 planet,

 then the reason for this odd mix of thirty-sixes and thirty-sevens

 is the same as the one that causes problems with our calendar: That

 planet had a moon."

 "So these groups are months," Caldwell stated.

 "If it's a calendar-yes. Each group is divided into three

 subgroups-weeks, if you like. Normally there are twelve days in

 each, but there are nine long months, in which the middle week has

 thirteen days."

 Danchekker looked for a long time at the sheet of paper, an

 expression of pained disbelief spreading slowly across his face.

 "Are you proposing this as a serious scientific theory?" he queried

 in a strained voice.

 "Of course not," Hunt replied. "This is all pure speculation. But

 it does indicate some of the avenues that could be explored. These

 alphabetic groups, for example, might correspond to references that

 the language people might dig from other sources-such as dates on

 documents, or date stamps on pieces of clothing or other equipment.

 Also, you might be able to find some independent way of arriving at

 the number of days in the year; if it turned out to be seventeen

 hundred, that would be quite a coincidence, wouldn't it?"

 "Anything else?" Caldwell asked.

 "Yes. Computer correlation analysis of this number pattern may show

 hidden superposed periodicities; for all we know, there could have

 been more than one moon. Also, it should be possible to compute

 families of curves giving possible relationships between

 planet-to-satellite mass ratios against mean orbital radii. Later

 on you might know enough more to be able to isolate one of the

 curves. It might describe the Earth-Luna system; then again, it

 might not."

 "Preposterous!" Danchekker exploded.

 "Unbiased?" Hunt suggested.

 "There is something else that may be worth trying," Schorn

 interrupted. "Your calendar, if that's what it is, has so far been

 described in relative terms only-days per month, months per year,

 and so on. There is nothing that gives us any absolute values. Now

 -and this is a long shot-from detailed chemical analysis we are

 making some progress in building a quantitative model of Charlie's

 cell-metabolism cycles and enzyme processes. We may be able to

 calculate the rate of accumulation of waste materials and

 toxins in the blood and tissues, and from these results form an

 estimate of his natural periods of sleep and wakefulness. If, in

 this way, I could provide a figure for the length tf the day, the

 other quantities would follow immediately."

 "If we knew that, then we'd know the planet's orbital period," said

 somebody else. "But could we get an estimate of its mass?"

 "One way might be by doing a structural analysis of Charlie's bone

 and muscle formations and then working out the power- weight

 ratios," another chipped in.

 "That would give us the planet's mean distance from its sun," said

 a third.

 "Only if it was like our Sun."

 "You could get a check on the planet's mass from the glass and

 other crystalline materials in his equipment. From the crystal

 structure, we should be able to figure out the strength of the

 gravitational field they cooled in."

 "How could we get a figure for density?"

 "You still need to know the planetary radius."

 "He's like us, so the surface gravity will be Earthlike."

 "Very probable, but let's prove it."

 "Prove that's a calendar first."

 Remarks began pouring in from all sides. Hunt reflected with some

 satisfaction that at least he had managed to inject some spirit and

 enthusiasm into the proceedings.

 Danchekker remained unimpressed. As the noise abated, he rose again

 to his feet and pointed pityingly to the single sheet of paper,

 still lying in the center of the table.

 "All balderdash!" he spat. "There is the sum total of your

 evidence. There"-he slid his voluminous ifie, bulging with notes

 and papers, across beside it-"is mine, backed by libraries, data

 banks, and archives the world over. Charlie comes from Earth!"

 "Where's his civilization, then?" Hunt demanded. "Removed in an

 enormous celestial garbage truck?"

 Laughter from around the table greeted the return of Danchekker's

 own gibe. The professor darkened and seemed about to say something

 obscene. Caldwell held up a restraining hand, but Schorn saved the

 situation by interrupting in his calm, unruffled tone. "It would

 seem, ladies and gentlemen, that for the moment we must compromise

 by agreeing to a purely hypothetical situation. To keep Professor

 Danchekker happy, we must accept that

 the Lunarians evolved from the same ancestors as ourselves. To keep

 Dr. Hunt happy, we must assume they did it somewhere else. How we

 are to reconcile these two irreconcilables, I would not for one

 moment attempt to predict."

  

 chapter nine

  

 Hunt saw less and less of the Trimagniscope during the weeks that

 followed the progress meeting. Caldwell seemed to go out of his way

 to encourage the Englishman to visit the various UNSA labs and

 establishments nearby, to "see what's going on first-hand," or the

 offices in Navcomms HQ to "meet someone you might find

 interesting." Hunt was naturally curious about the Lunarian

 investigations, so these developments suited him admirably. Soon he

 was on familiar terms with most of the engineers and scientists

 involved, at least in the Houston vicinity, and he had a good idea

 of how their work was progressing and what difficulties they were

 encountering. He eventually acquired a broad overview of the

 activity on all fronts and found that, at least at the general

 level, the awareness of the whole picture that he was developing

 was shared by only a few privileged individuals within the

 organization.

 Things were progressing in a number of directions. Calculations of

 structural efficiency, based on measurements of Charlie's skeleton

 and the bulk supported by it, had given a figure for the surface

 gravity of his home planet, which agreed within acceptable margins

 of error with figures deduced separately from tests performed on

 the crystals of his helmet visor and other components formed from a

 molten state. The gravity field at the surface of Charlie's home

 planet seemed to have been not much different from that of Earth;

 possibly it was slightly stronger. These results were accepted as

 being no more than rough approximations. Besides, nobody knew how

 typical Charlie's physical build had been of that of the Lunarians

 in general, so there was no firm indication of whether the planet

 in question had been Earth or somewhere else. The issue was still

 wide open.

 On equipment tags, document headings, and appended to certain

 notes, the Linguistics section had found examples of Lunarian words

 which matched exactly some of the labels on the calendar, just as

 Hunt had suggested they might. While this proved nothing, it

 did add further plausibility to the idea that these words indicated

 dates of some kind.

 Then something else that seemed to connect with the calendar

 appeared from a totally unexpected direction. Site-preparation work

 in progress near Lunar Tycho Base Three turned up fragments of

 metal fabrications and structures. They looked like the ruins of

 some kind of installation. The more thorough probe that followed

 yielded no fewer than fourteen more bodies, or more accurately,

 bits of bodies from which at least fourteen individuals of both

 sexes could be identified. Clearly, none of the bodies was in

 anything approaching the condition of Charlie's. They had all been

 literally blown to pieces. The remains comprised little more than

 splinters of charred bone scattered among scorched tatters of

 spacesuits. Apart from suggesting that besides being physically the

 same as humans, the Lunarians had been every bit as accident-prone,

 these discoveries provided no new information-until the discovery

 of the wrist unit. About the size of a large cigarette pack, not

 including the wrist bracelet, the device carried on its upper face

 four windows that looked like miniature electronic displays. From

 their size and shape, the windows seemed to have been intended to

 display character data rather than pictures, and the device was

 thought to be a chronometer or a computing-calculating aid; maybe

 it was both-and other things besides. After a perfunctory

 examination at Tycho Three the unit had been shipped to Earth along

 with some other items. It eventually found its way to the Navcomms

 laboratories near Houston, where the gadgets from Charlie's

 backpack were being studied. After some preliminary experimenting

 the casing was safely removed, but detailed inspection of the

 complex molecular circuits inside revealed nothing particularly

 meaningful. Having no better ideas, the Navcomms engineers resorted

 to applying low voltages to random points to see what happened.

 Sure enough, when particular sequences of binary patterns were

 injected into one row of contacts, an assortment of Lunarian

 symbols appeared across the windows. This left nobody any the wiser

 until Hunt, who happened to be visiting the lab, recognized one

 sequence of alphabetic sets as the months that appeared on the

 calendar. Hence, at least one of the functions performed by the

 wrist unit seemed closely related to the table in the diary.

 Whether or not this had anything to do with

 recording the passage of time remained to be seen, but at least odd

 things looked as if they were beginning to tie up.

 The Linguistics section was making steady if less spectacular

 progress toward cracking the language. Many of the world's most

 prominent experts were getting involved, some choosing to move to

 Houston, while others worked via remote data links. As the first

 phase of their assault, they amassed volumes of statistics on word

 and character distributions and matchings, and produced reams of

 tables and charts that looked as meaningless to everybody else as

 the language itself. After that it was largely a matter of

 intuition and guessing games played on computer display screens.

 Every now and again somebody spotted a more meaningful pattern,

 which led to a better guess, which led to a still more meaningful

 pattern-and so on. They produced lists of words in categories

 believed to correspond to nouns, adjectives, verbs, and adverbs,

 and later on added adjectival and adverbial phrases-fairly basic

 requirements for any advanced inflecting language. They began to

 develop a feel for the rules for deriving variants, such as plurals

 and verb tenses, from common roots, and for the conventions that

 governed the formation of word sequences. An appreciation of the

 rudiments of Lunarian grammar was emerging from all this, and the

 experts in Linguistics faced the future with optimism, suddenly

 confident that they were approaching the point where they would

 begin attempting to match the first English equivalents to selected

 samples.

 The Mathematics section, organized on lines similar to Linguistics,

 was also finding things that were interesting. Part of the diary

 was made up of many pages of numeric and tabular material-

 suggesting, perhaps, a reference section of Useful Information. One

 of the pages was divided vertically, columns of numbers alternating

 with columns of words. A researcher noticed that one of the

 numbers, when converted to decimal, came out to 1836-the

 proton-electron mass ratio, a fundamental physical constant that

 would be the same anywhere in the Universe. It was suggested that

 the page might be a listing of equivalent Lunarian units of mass,

 similar to equivalence tables used for converting ounces to grams,

 grams to pounds. . . and so on. If so, they had stumbled on a

 complete record of the Lunarian system of measuring mass. The

 problem was that the whole supposition rested on the slender

 assumption that the figure 1836 did, in fact, denote the pro-

 ton-electron mass ratio and was not merely a coincidental reference

 to something completely different. They needed a second source of

 information to check it against.

 When Hunt talked to the mathematicians one afternoon, he was

 surprised to learn that they were unaware that the chemists and

 anatomists in other departments had computed estimates of surface

 gravity. As soon as he mentioned the fact, everybody saw the

 significance at once. If the Lunarians had adopted the practice

 that was common on Earth-using the same units to express mass and

 weight on their own planet-then the numbers in the table gave

 Lunarian weights. Furthermore, there was available to them at least

 one object whose weight they could estimate accurately:

 Charlie himself. Thus, since they already had an estimate of

 surface gravity, they could easily approximate how much Charlie

 would have weighed in kilograms back home. Only one piece of

 information was missing for a solution to the whole problem: a

 factor to convert kilograms to Lunarian weight units. Then Hunt

 speculated that there could well be among Charlie's personal

 documents an identity card, a medical card-something that recorded

 his weight in his own units. If so, that one number would tell them

 all they needed to know. The discussion ended abruptly, with the

 head of the Mathematics section departing in great haste and a

 state of considerable excitement to talk to the head of the

 Linguistics section. Linguistics agreed to make a special note if

 anything like that turned up. So far nothing had.

 Another small group, tucked away in offices in the top of the

 Navcomms HQ building, was working on what was perhaps the most

 exciting discovery to come out of the books so far. Twenty pages,

 right at the end of the second book, showed a series of maps. They

 were all drawn to an apparently small scale, each one depicting

 extensive areas of the world's surface-but the world so depicted

 bore no resemblance to Earth. Oceans, continents, rivers, lakes,

 islands, and most other geographical features were easily

 distinguishable, but in no way could they be reconciled with

 Earth's surface, even allowing for the passage of fifty thousand

 years- which would have made little difference anyway, aside from

 the size of the polar ice caps.

 Each map carried a rectangular grid of reference lines, similar to

 those of terrestrial latitude and longitude, with the lines spaced

 forty-eight units (decimal) apart. These numbers were presumed

 to denote units of Lunarian circular measure, since nobody could

 think of any other sensible way to dimension coordinates on the

 surface of a sphere. The fourth and sevent~i maps provided the key:

 the zero line of longitude to which all the other lines were

 referenced. The line to the east was tagged "528" and that to the

 west "48," showing that the full Lunarian circle was divided into

 576 Lunarian degrees. The system was consistent with their

 duo-decimal counting method and their convention of reading from

 right to left. The next step was to calculate the percentage of the

 planet's surface that each map represented and to fit them together

 to form the complete globe.

 Already, however, the general scheme was clear. The ice caps were

 far larger than those believed to have existed on Earth during the

 Pleistocene Ice Age, stretching in some places to within twenty

 (Earth) degrees of the equator. Most of the seas around the

 equatorial belt were completely locked in by coastlines and ice. An

 assortment of dots and symbols scattered across the land masses in

 the ice-free belt and, more thinly, over the ice sheets themselves,

 seemed to indicate towns and cities.

 When Hunt received an invitation to come up and have a look at the

 maps, the scientists working on them showed him the scales of

 distance that were printed at the edges. If they could only find

 some way of converting those numbers into miles, they would have

 the diameter of the planet. But nobody had told them about the

 tables the Mathematics section thought might be mass-unit

 conversion factors. Maybe one of the other tables did the same

 thing for units of length and distance? If so, and if they could

 find a reference to Charlie's height among his papers, the simple

 process of measuring him would allow them to work out how many

 Earth meters there were in a Lunarian mile. Since they abeady had a

 figure for the planet's surface gravity, its mass and mean density

 should follow immediately.

 This was all very exciting, but all it proved was that a world had

 existed. It did not prove that Charlie and the Lunarians originated

 there. After all, the fact that a man carries a London street map

 in his pocket doesn't prove him to be a Londoner. So the work of

 relating numbers derived from physical measurements of Charlie's

 body to the numbers on the maps and in the tables could turn out to

 be based on a huge fallacy. If the diary came from the world shown

 on the maps but Charlie came from somewhere else, then the system

 of measurement deduced from the maps and tables in the diary might

 be a totally different system from the one used to record his

 personal characteristics in his papers, since the latter system

 would be the system used in the somewhere else, not in the world

 depicted on the maps. It all got very confusing.

 Finally, nobody claimed to have proved conclusively that the world

 on the maps wasn't Earth. Admittedly it didn't look like Earth, and

 attempts to derive the modern distribution of terrestrial

 continents from the land areas on the maps had met with no success

 at all. But the planet's gravity hadn't been all that much

 different. Maybe the surface of Earth had undergone far greater

 changes over the last fifty thousand years than had been previously

 thought? Furthermore, Danchekker's arguments still carried a lot of

 weight, and any theory that discounted them would have an awful lot

 of explaining to do. But by that time, most of the scientists

 working on the project had reached a stage where nothing would have

 surprised them any more, anyway.

 "Got your message. Came straight over," Hunt announced as Lyn

 Garland ushered him into Caldwell's office. Caidwell nodded toward

 one of the chairs opposite his desk, and Hunt sat down. Caidwell

 glanced at Lyn, who was still standing by the door.

 "It's okay," he said. She left, closing the door behind her.

 Caldwell fixed Hunt with an expressionless stare for a few seconds,

 at the same time drumming his fingers on the desk. "You've seen a

 lot of the setup here during the past few months. What do you think

 of it?"

 Hunt shrugged. The answer was obvious.

 "I like it. Exciting things happen around here."

 "You like exciting things happening, huh?" The executive director

 nodded, half to himself. He remained thoughtful for what seemed a

 long time. "Well, you've only seen part of what goes on. Most

 people have no idea how big UNSA is these days. All the things you

 see around here-the labs, the installations, the launch

 areas-that's just the backup. Our main business is up front." He

 gestured toward the photographs adorning one of the walls. "We have

 people right now exploring the Martian deserts, flying probes down

 through the clouds of Venus, and walking on the moons of Jupiter.

 In the deep-space units in California, they're designing ships that

 will make Vegas and even the Jupiter Mission ships

 look like paddleboats. Photon-drive robot probes that will make the

 first jump to the stars-some seven miles long! Think of it- seven

 miles long!"

 Hunt did his best to react in the appropriate manner. The problem

 was, he wasn't sure what manner was appropriate. Caldwell never

 said or did anything without a reason. The reason for this turn of

 conversation was far from obvious.

 "And that's only the beginning," Caidwell went on. "After that, men

 will follow the robots. Then-who knows? This is the biggest thing

 the human race has ever embarked on: USA, US Europe, Canada, the

 Soviets, the Australians-they're all in on it together. Where does

 a thing like that go once it starts moving, huh? Where does it

 stop?"

 For the first time since his arrival at Houston, Hunt detected a

 hint of emotion in the American's voice. He nodded slowly, though

 still not comprehending.

 "You didn't drag me here to give me a UNSA commercial," he said.

 "No, I didn't," Caidwell agreed. "I dragged you over because it's

 time we had a serious talk. I know enough about you to know how the

 wheels go round inside your head. You are made out of the same

 stuff as the guys who are making all the things happen out there."

 He sat back in his chair and held Hunt's gaze with a direct stare.

 "I want you to quit messing around at IDCC and come over to us."

 The statement caught Hunt like a right hook.

 "What. . . ! To Navcomms!"

 "Correct. Let's not play games. You're the kind of person we need,

 and we can give you the things you need. I know I don't have to

 make a big speech to explain myself."

 Hunt's initial surprise lasted perhaps half a second. Already the

 computer in his head was churning out answers. Caidwell had been

 building toward this and testing him out for weeks. So, that was

 why he had moved in Navcomms engineers to take over running the

 scope. Had the thought been in his mind as long ago as that?

 Already Hunt had no doubt what the outcome of the interview would

 be. However, the rules of the game demanded that the set questions

 be posed and answered before anything final could be pronounced.

 Instinctively he reached for his cigarette case, but Caldwell

 preempted him and slid his cigar box across the desk.

 "You seem pretty confident you've got what I need," Hunt said as he

 selected a Havana. "I'm not sure even I know what that is."

 "Don't you. . . ? Or is it that you just don't like talking about

 it?" Caldwell stopped to light his own cigar. He puffed until

 satisfied, then continued: "New Cross to the Journal of the Royal

 Society, solo. Some achievement." He made a gesture of approval.

 "We like self-starters over here-sorta . . . traditional. What made

 you do it?" He didn't wait for a reply. "First electronics, then

 mathematics . . . after that nuclear physics, later on nudeonics.

 What's next, Dr. Hunt? Where do you go from there?" He settled back

 and exhaled a cloud of smoke while Hunt considered the question.

 Hunt raised his eyebrows in mild admiration. "You seem to have been

 doing your homework," he said.

 Caldwell didn't answer directly but asked, simply, "How was your

 uncle in Lagos when you visited him on vacation last year? Did he

 prefer the weather to Worcester, England? Seen much of Mike from

 Cambridge lately? I doubt it-he joined UNSA; he's been at Hellas

 Two on Mars for the last eight months. Want me to go on?"

 Hunt was too mature to feel indignant; besides, he liked to see a

 professional in action. He smiled faintly.

 "Ten out of ten."

 At once Caldwell's mood became deadly serious. He leaned forward

 and spread his elbows on the desk.

 "I'll tell you where you go from here, Dr. Hunt," he said. "Out

 -out to the stars! We're on our way to the stars over here! It

 started when Danchekker's fish first crawled up out of the mud. The

 urge that made them do it is the same as the one that's driven you

 all your life. You've gone inside the atom as far as you can go;

 there's only one way left now-out. That's what UNSA has to offer

 that you can't refuse."

 There was nothing Hunt could add. Two futures lay spread out before

 him: One led back to Metadyne, the other beckoned onwards toward

 infinity. He was as incapable of choosing the first as his species

 was of returning to the depths of the sea.

 "What's your side of the deal, then?" he asked after some

 reflection.

 "You mean, what do you have that we need?"

 "Yes."

 "We need the way your brain works. You can think sideways. You see

 problems from different angles that nobody else uses. That's what I

 need to bust open this Charlie business. Everybody argues so much

 because they're making assumptions that seem obvious but that they

 shouldn't be making. It takes a special kind of mind to figure out

 what's wrong when things that anybody with common sense can see are

 true turn out to be not true. I think you're the guy."

 The compliments made Hunt feel slightly uncomfortable. He decided

 to move things along. "What do you have in mind?"

 "Well, the guys we have at present are top grade inside their own

 specialties," Caldwell replied. "Don't get me wrong, these people

 are good-but I'd like them to concentrate on doing the things

 they're best at. However, aside from all that, I need someone with

 an unspecialized, and therefore impartial, outlook to coordinate

 the findings of the specialists and integrate them into an overall

 picture. If you like, I need people like Danchekker to paint the

 pieces of the puzzle, but I need someone like you to fit the pieces

 together. You've been doing a bit of that, unofficially, for quite

 a while anyway; I'm saying, 'Let's make it official."

 "How about the organization?" Hunt asked.

 "I've thought about that. I don't want to alienate any of our

 senior people by subordinating them or any of their staffs to some

 new whiz kid. That's only good politics. Anyhow, I don't think

 you'd want it that way."

 Hunt shook his head to show his agreement.

 "So," Caidwell resumed, "what I figure is, the various departments

 and sections will continue to function as they do at present. Our

 relationship with outfits outside Navcomms will remain unaffected.

 However, all the conclusions that everybody has reached so far, and

 new findings as they turn up, will be referred to a centralized

 coordinating section-that's you. Your job will be to fit the bits

 together, as I said earlier. You'd build up your own staff as time

 goes on and the work load increases. You'd be able to request any

 particular items of information you find you need from the

 specialist functions; that way you'd be defining some of their

 objectives. As for your objectives, they're abeady spelled out:

 Find out who these Charlie people were, where they came from, and

 what happened to them. You report directly to me and get the whole

 problem off my back. I've got enough on my sched

 ule without worrying about corpses." Caldwell threw out an arm to

 show that he was finished. "Well, what do you say?"

 Hunt had to smile within himself. As Caldwell had said, there was

 really nothing to think about. He took a long breath and turned

 both hands upward. "As you said-an offer I can't refuse."

 "So, you're in?"

 "I'm in.'~

 "Welcome aboard, then." Caidwell looked pleased. "This calls for a

 drink." He produced a flask and glasses from somewhere behind the

 desk. He poured the whiskey and passed a glass to his newest

 employee.

 "When do you want it to start?" Hunt asked after a moment.

 "Well, you probably need a couple of months or so to sort out

 formalities with IDCC. But why wait for formalities? You're on loan

 here from IDCC anyway and under my direction for the duration;

 also, we're paying for you. So what's wrong with tomorrow morning?"

 "Christ!"

 Caldwell's manner at once became brisk and businesslike.

 "I'll allocate offices for you in this building. Rob Gray takes

 full charge of scope operations and keeps the engineers I've

 assigned to him as his permanent staff for as long as he's in

 Houston. That frees you totally. By the end of this week I want

 estimates of what you think you'll need in the way of clerical and

 secretarial staff, technical personnel, equipment, furniture, lab

 space, and computer facilities.

 "By this time next week I want you to have a presentation ready for

 a meeting of section and department heads that I'm going to call,

 to tell them how you see yourself and them working together. Make

 it tactful. I won't issue any official notification of these

 changes until after the meeting, when everybody knows what's going

 on. Don't talk about it until then, except to myself and Lyn.

 "Your ouffit will be designated Special Assignment Group L, and

 your position, will be section head, Group L. The post is classed

 as 'Executive, grade four, civilian,' within the Space Arm. It

 carries all the appropriate benefits of free use of UNSA vehicles

 and aircraft, access to restricted files up to category three, and

 standard issues of clothing and accessories for duties overseas or

 off-planet. All that is in the Executive Staff Manual; details of

 reporting structures, admin procedures, and that kind of thing are

 in the UNSA Corporate Policy Guide. Lyn will get you copies.

 "You'll have to get in touch with the federal authorities in

 Houston regarding permanent residence in the USA; Lyn knows the

 right people. Arrange transfer of your personal belongings from

 England at your own convenience and charge it to Naycomms. We'll

 help out finding you somewhere to live, but in the meantime stay on

 at the Ocean."

 Hunt had the fleeting thought that had Caldwell been born three

 thousand years previously, Rome might well have been built in a

 day.

 "What's your current salary?" Caldwell asked.

 "Twenty-five thousand European dollars."

 "We'll make it thirty."

 Hunt nodded mutely.

 Caldwell paused and checked mentally for anything he might have

 overlooked. Finding nothing, he sat back and raised his glass.

 "Cheers, then, Vic."

 It was the first time he had addressed Hunt informally.

 "Cheers."

 "To the stars."

 "To the stars."

 A low roar from a point outside the city reached the room. They

 glanced toward the window to see a column of light climbing into

 the blue as a Vega lifted off from a distant launch pad. A quiet

 surge of excitement welled up in Hunt's veins as he took in the

 sight. It was a symbol of the ultimate expression of man's outward

 urge, and he was about to become part of it.

  

 chapter ten

  

 Demands for the services of Special Assignment Group L commenced as

 soon as the new unit officially went into operation, and they

 continued to increase rapidly in the weeks that followed. By the

 end of a month Hunt was swamped and forced to take on extra people

 at a faster rate than he had intended. Originally his idea had been

 to keep going with a skeleton staff for a while, at least until he

 formed a better idea of what was required. When Caldwell first

 announced the establishment of the new group, there had been one or

 two instances of petty jealousy and resentment, but the attitude

 that prevailed in the end was that Hunt had contributed several

 worthwhile ideas, and it seemed oniy sensible to get him in on the

 team permanently. After a while, even the dissenters grudgingly

 began to concede that things seemed to run more smoothly with Group

 L around. Some of them eventually did a complete about-face and

 became enthusiastic supporters of the scheme, as they came to

 appreciate that the communication channels to Hunt's people worked

 in bidirectional mode, and for every bit of data they fed in, ten

 bits came back in the other direction. As the oil thus added to

 Caldwell's jigsaw-puzzle-solving machine began to prove effective,

 the machine shifted fully into top gear, and suddenly pieces

 started fitting together.

 The Mathematics section was still working on the equations and

 formulas found in the books. Since mathematical relationships would

 remain true irrespective of the conventions used to express them,

 their interpretation was a far less arbitrary affair than that of

 deciphering the Lunarian language. The mathematicians had been

 stimulated by the discovery of the mass conversion table. They

 turned their attention to the other tables contained in the same

 book and soon found one that listed many commonly used physical and

 mathematical constants. From it they quickly picked out pi as well

 as e, the base of natural logarithms, and one or two more, but they

 still didn't understand the system of units well enough to evaluate

 the majority.

 Another set of tables turned Out to be simple trigonometric

 functions; these were easily recognized once the cartographers had

 provided the units of circular measure. The h~adings of the

 coluinns of these tables gave the Lunarian symbols for sine,

 cosine, tangent, and the like. Once these were known, many of the

 mathematical expressions elsewhere started making more sense; some

 of them fell out immediately as familiar trigonometric

 relationships. These in turn helped establish the conventions used

 to denote normal arithmetic operations and that of exponentiation,

 which led to the identification of the equations of mechanical

 motion. Nobody was surprised when these equations revealed that

 Lunarian scientists had deduced the same laws as Newton. The

 mathematicians progressed to tables of elementary first integrals

 and standard forms of low-order differential equations. On later

 pages were expressions which they suspected might describe systems

 of resonance and damped oscillations. Here again, the uncertainty

 over units presented a problem; expressions of this type would be

 in a standard form that could apply equally well to electrical,

 mechanical, thermal, or many other types of physical phenomena.

 Until they knew more about Lunarian units, they could not be sure

 precisely what these equations meant, even if they succeeded in

 interpreting them mathematically.

 Hunt remembered having noticed that many of the electrical

 subassemblies from Charlie's backpack had small metal labels

 mounted adjacent to plugs, sockets, and other input-output

 connections. He speculated that some of the symbols engraved on

 these labels might represent ratings in units of voltage, current,

 power, frequency, and so on. He spent a day in the electronics

 labs, produced a full report on these markings, and passed it on to

 Mathematics. Nobody had thought to tell them about it sooner.

 The electronics technicians located the battery in the wrist unit

 from Tycho, took it to pieces, and with the assistance of an

 electrochemist from another department, worked out the voltage it

 had been designed to produce. Linguistics translated the markings

 on the casing, and that gave a figure for the Lunarian unit for

 electrical voltage. Well, it was a start.

 Professors Danchekker and Schom were in charge of the biological

 side of the research. Perhaps surprisingly, Danchekker exhibited no

 reluctance to cooperate with Group L and kept them fully updated

 with a regular flow of information. This was more

 the result of his deeply rooted sense of propriety than of any

 change of heart. He was a formalist, and if this procedure was what

 the formalities of the arrangement required, he would adhere to it

 rigidly. His refusal to budge one inch from his uncompromising

 views regarding the origins of the Lunarians, however, was total.

 As promised, Schorn had set up investigations to determine the

 length of Charlie's natural day from studies of body chemistry and

 cell metabolism, but he was running into trouble. He was getting

 results, all right, but the results made no sense. Some tests gave

 a figure of twenty-four hours, which meant that Charlie could be

 from Earth; some gave thirty-five hours, which meant he couldn't

 be; and other tests came up with figures in between. Thus, if the

 aggregate of these results meant anything at all, it indicated that

 Charlie came from a score of different places all at the same time.

 Either it was crazy, or there was something wrong with the methods

 used, or there was more to the matter than they thought.

 Danchekker was more successful in a different direction. From an

 analysis of the sizes and shapes of Charlie's blood vessels and

 associated muscle tissues, he produced equations describing the

 performance of Charlie's circulatory system. From these he then

 derived a set of curves that showed the proportions of body heat

 that would be retained and lost for any given body temperature and

 outside temperature. He came up with a figure for Charlie's normal

 body temperature from some of Schorn's figures that were not

 suspect and were based on the assumption that, as in the case of

 terrestrial mammals, the process of evolution would have led to

 Charlie's body regulating its temperature to such a level that the

 chemical reactions within its cells would proceed at their most

 efficient rates. By substituting this figure back into his original

 equations, Danchekker was able to arrive at an estimate of the

 outside temperature or, more precisely, the temperature of the

 environment in which Charlie seemed best adapted to function.

 Allowing for error, it came out at somewhere between two and nine

 degrees Celsius.

 With Schorn's failure to produce a reliable indication of the

 length of the Lunarian day, there was still no way of assigning any

 absolute values to the calendar, although sufficient corroborating

 evidence had been forthcoming from various sources to verify beyond

 reasonable doubt that it was indeed a calendar. As more

 clues to Lunarian electrical units were found by Electronics, an

 a!ternative approach to obtaining the elusive Luparian unit of time

 suggested itself. If Mathematics could untangle the equations of

 electrical oscillation, they should be able to manipulate the

 quantities involved in such a way as to express the two constants

 denoting the dielectric permittivity and magnetic permeability of

 free space in Lunarian units. The ratio of these constants would

 yield the velocity of light, expressed in Lunarian units of

 distance per Lunarian units of time. The units for representing

 distance were understood already; therefore, those used for

 measuring time would be given automatically.

 All this activity in UNSA naturally attracted widespread public

 attention. The discovery of a technologically advanced civilization

 from fifty thousand years in the past was not something that

 happened very often. Some of the headlines flashed around the World

 News Grid when the story was released, a few weeks after the

 original find, were memorable: MAN ON MOON BEFORE ARMSTRONG; some

 were hilarious: EXTINCT CIVILIZATION ON MARS; some were just wrong:

 CONTACT MADE WITH ALIEN INTELLIGENCE. But most summed up the

 situation fairly well.

 In the months that followed, UNSA's public relations office in

 Washington, long geared to conducting steady and predictable

 dealings with the news media, reeled under a deluge of demands from

 hard-pressed editors and producers all over the globe. Washington

 struggled valiantly for a while, but in the end did the human

 thing, and delegated the problem to Navcomms' local PR department

 at Houston. The PR director at Houston found a ready-made

 clearinghouse of new information in the form of Group L, right on

 his doorstep, so still another dimension was added to Hunt's ever

 growing work load. Soon, press conferences, TV documentaries,

 ifimed interviews, and reporters became part of his daily routine;

 so did the preparation of weekly progress bulletins. Despite the

 cold objectivity and meticulous phrasing of these bulletins,

 strange things seemed to happen to them between their departure

 from the offices of Navcomms and their arrival on the world's

 newspaper pages and wall display screens. Even stranger things

 happened in the minds of some people who read them.

 One of the British Sunday papers presented just about all of the

 Old Testament in terms of the interventions of space beings as seen

 through the eyes of simple beholders. The plagues of Egypt were

 ecological disruptions deliberately brought about as warnings to

 the oppressors; flying saucers guided Moses through the Red Sea

 while the waters were diverted by nucleonic force fields; and the

 manna from heaven was formed from the hydrocarbon combustion

 products of thermonuclear propulsion units. A publisher in Paris

 observed the results, got the message, and commissioned a

 free-lancer to reexamine the life of Christ as a symbolic account

 of the apparent miracle workings of a Lunarian returning to Earth

 after a forty-eight-thousand-year meditation in the galactic

 wilderness.

 "Authentic" reports that the Lunarians were still around abounded.

 They had built the pyramids, sunk Atlantis, and dug the Bosporus.

 There were genuine eyewitness accounts of Lunarian landings on

 Earth in modern times. Somebody had held a conversation with the

 pilot of a Lunarian spaceship two years before in the middle of the

 Colorado Desert. Every reference ever recorded to supernatural

 phenomena, apparitions, visitations, miracles, saints, ghosts,

 visions, and witches had a Lunarian connection.

 But as the months passed and no dramatic revelations unfolded, the

 world began to turn elsewhere for new sensations. Reports of

 further findings became confined to the more serious scientific

 journals and proceedings of the professional societies. But the

 scientists on the project continued their work undisturbed.

 Then a UNSA team erecting an optical observatory on the Lunar

 Farside detected unusual echoes on ultrasonics from about two

 hundred feet below the surface. They sank a shaft and discovered

 what appeared to be all that was left of the underground levels of

 another Lunarian base, or at any rate, some kind of construction.

 It was just a metal-walled box about ten feet high and as broad and

 as long as a small house; one end was missing, and about a quarter

 of the volume enclosed had filled up with dust and rock debris. In

 the space that was left at the end, they found the charred

 skeletons of eight more Lunarians, some pieces of furniture, a few

 items of technical equipment, and a heap of sealed metal

 containers. Whatever had formed the remainder of the structure that

 this gallery had been part of was gone without a trace.

 The metal containers were later opened by the scientists at

 Westwood. Inside the cans was a selection of assorted foodstuffs,

 well preserved despite having been cooked. Presumably, whatever had

 done the cooking had also cooked the Lunarians. Most of the cans

 contained processed vegetables, meats, and sweet preparations; a

 few, however, yielded a number of fish, about the size of herrings

 and preserved intact.

 When Danchekker's assistant dissected one of the fish and began

 looking inside, he couldn't make sense of what he found, so he

 called the professor down to the lab to ask what he made of it.

 Danchekker didn't go home until eight o'clock the next morning. A

 week later he announced to an incredulous Vic Hunt: "This specimen

 never swam in any of our oceans; it did not evolve from, nor is it

 in any way related to, any form of life that has ever existed on

 this planet!"

 chapter eleven

  

 The Apollo Seventeen Mission, in December 1972, had marked the

 successful conclusion to man's first concerted effort to reach and

 explore first-hand a world other than his own. After the Apollo

 program, NASA activities were restricted, mainly as a result of the

 financial pressures exerted on the USA by the economic recessions

 that came and went across the Western world throughout that decade,

 by the politically inspired oil crisis and various other crises

 manufactured in the Middle East and the lower half of Africa, and

 by the promotion of the Vietnam War. During the mid and late

 seventies, a succession of unmanned probes were dispatched to Mars,

 Venus, Mercury, and some of the outer planets. When manned missions

 were resumed in the 19 80's, they focused on the development of

 various types of space shuttle and on the construction of

 permanently manned orbiting laboratories and observatories, the

 main objective being the consolidation of a firm jumping-off point

 prior to resumed expansion outward. Thus, for a period, the Moon

 was left once more on its own, free to continue its billion-year

 contemplation of the Universe without further interruption by man.

 The information brought back by the Apollo astronauts finally

 resolved the conflicting speculations concerning the Moon's nature

 and origins that had been mooted by generations of Earth-bound

 observers. Soon after the Solar System was formed, 4,500 million

 years ago, give or take a few, the Moon became molten to a

 considerable depth, possibly halfway to the center; the heat was

 generated by the release of gravitational energy as the Moon

 continued to accumulate. During the cooling that followed, the

 heavier, iron-bearing minerals sank toward the interior, while the

 less dense, aluminum-rich ones floated to the surface to form the

 highland crust. Continual bombardment by meteorites stirred up the

 mixture and complicated the process to some degree but by 4,300

 million years ago the formation of the crust was virtually

 complete. The bombardment continued until 3,900 million years ago,

 by which time most of the familiar surface features already

 existed. From then until 3,200 million years ago, basaltic lavas

 flowed from the interior, induced in some places by remelting due

 to concentrations of radioactive heat sources below the surface, to

 fill in the impact basins and create the darker maria. The crust

 continued cooling to greater depths until molten material could no

 longer penetrate. Thereafter, all remained unchanging through the

 ages. Occasionally an additional impact crater appeared and f

 alling dust gradually eroded the top millimeter of surface, but

 essentially, the Moon became a dead planet.

 This history came from detailed observations and limited

 explorations of Nearside. Orbital observations of Farside suggested

 that much of the same story applied there also, and since this

 sequence was consistent with existing theory, nobody doubted its

 validity for many years after Apollo. Of course, details remained

 to be added, but the broad picture was convincingly clear. However,

 when man returned to the Moon in strength and to stay, ground

 exploration of Farside threw up a completely different and totally

 unexpected story.

 Although the surface of Farside looked much the same as Near-side

 to the distant observer, it proved at the microscopic level to have

 undergone something radically different in its history.

 Furthermore, as bases, launch sites, communications installations,

 and all the other paraphernalia that accompanied man wherever he

 went, began proliferating on Nearside, the methodical surface

 coverage that this entailed produced oddities there, too.

 All the experiments performed on the rock samples brought back from

 the eight sites explored before the mid-seventies gave consistent

 results supporting the orthodox theories. When the number of sites

 grew to thousands, by far the majority of additional data confirmed

 them-but some curious exceptions were noted, exceptions which

 seemed to indicate that some of the features on Nearside ought,

 rightfully, to be on Farside.

 None of the explanations hazarded were really conclusive. This made

 little difference to the executives and officers of UNSA, since by

 that time the pattern of Lunar activity had progressed from that of

 pure scientific research to one of intense engineering operations.

 Only the academic fraternity of a few universities found time to

 ponder and correspond on the spectral inconsistencies between dust

 samples. So for many years the well-

 documented problem of "lunar hemispheric anomalies" remained ified,

 along with a million and one other items, in the "Awaiting

 Explanation" drawer of science.

 A methodical review of the current state of knowledge in any branch

 of science that might have a bearing on the Lunarian problem was a

 routine part of Group L's business. Anything to do with the Moon

 was, naturally, high on the list of things to check up on, and soon

 the group had amassed enough information to start a small library

 on the subject. Two junior physicists, who didn't duck quickly

 enough when Hunt was giving out assignments, were charged with the

 Herculean task of sifting through all this data. It took some time

 for them to get around to the topic of hemispheric anomalies. When

 they did, they found reports of a series of dating experiments

 performed some years previously by a nucleologist named Kronski at

 the Max Planck Institute in Berlin. The data that appeared in those

 reports caused the two physicists to drop everything and seek out

 Hunt immediately.

 After a long discussion, Hunt made a vi-phone call to a Dr. Saul

 Steinfield of the Department of Physics of the University of

 Nebraska, who specialized in Lunar phenomena. As a consequence of

 that call, Hunt made arrangements for the deputy head of Group L to

 take charge for a few days, and he flew north to Omaha early the

 next morning. Steinfleld's secretary met Hunt at the airport, and

 within an hour Hunt was standing in one of the physics department

 laboratories, contemplating a three-foot-diameter model of the

 Moon.

 "The crust isn't evenly distributed," Steinfield said, waving

 toward the modeL "It's a lot thicker on Farside than on Nearside-

 something that has been known for a long time, ever since the first

 artificial satellites were hung around the Moon in the nineteen

 sixties. The center of mass is about two kilometers away from the

 geometric center."

 "And there's no obvious reason," Hunt mused.

 Steinfleld's flailing arm continued to describe wild circles around

 the sphere in front of them. "There's no reason for the crust to

 solidify a lot thicker on one side, sure, but that doesn't really

 matter, because that's not the way it happened. The material that

 makes up the Farside surface is much younger than anything anybody

 ever believed existed on the Moon in any quantity

 up until about, ah, thirty or so years back-one hell of a lot

 younger! But you know that-that's why you're here."

 "You don't mean it was formed recently,"~ Hunt stated.

 Steinfield shook his head vigorously from side to side, causing the

 two tufts of white hair that jutted from the sides of his otherwise

 smooth head to wave about in a frenzy. "No. We can tell that it's

 about as old as the rest of the Solar System. What I mean is-it

 hasn't been where it is very long."

 He caught Hunt's shoulder and half turned him to face a wall chart

 showing a sectional view through the Lunar center. "You can see it

 on this. The red shell is the original outer crust going right

 around-it's roughly circular, as you'd expect. On Farside-

 here-this blue stuff sits on top of it and wasn't added very long

 ago."

 "On top of what used to be the surface."

 "Exactly. Somebody dumped a couple of billion tons of junk down on

 the old crust-but only on this side."

 "And that's been verified pretty conclusively?" Hunt asked, just to

 be doubly sure.

 "Yeah. . . yeah. Enough bore holes and shafts have been sunk all

 over Farside to tell us pretty closely where the old surface was.

 I'll show you something over here . . ." A major section of the far

 wall comprised nothing but rows of small metal drawers, each with

 its own neatly lettered label, extending from floor to ceiling.

 Steinfield walked across the room, and stooped to scan the labels,

 at the same time mumbling to himself semi-intelligibly. With a

 sudden "That's it!" he pounced on one of the drawers, opened it,

 and returned bearing a closed glass container about the size of a

 small pickle jar. It contained a coarse piece of a light gray rocky

 substance that glittered faintly in places, mounted on a wire

 support.

 "This is a fairly common KREEP basalt from Farside. It-"

 "'Creep'?"

 "Rich in potassium-that is, K-rare earth elements, and phosphorus:

 KREEP."

 "Oh-I see."

 "Compounds like this," Steinfield continued, "make up a lot of the

 highlands. This one solidified around 4.1 billion years ago. Now,

 by analyzing the isotope products produced by cosmic-ray exposure,

 we can tell how long it's been lying on the surface.

 Again, the figure for this one comes out at about 4,100 million

 years."

 Hunt looked slightly puzzled. "But that's normal. It's what you'd

 expect, isn't it?"

 "If it had been lying on the surface, yes. But this came from the

 bottom of a shaft over seven hundred feet deep! In other words, it

 was on the surface for all that time-then suddenly it's seven

 hundred feet down." Steinfleld gestured toward the wall chart

 again. "As I said, we find the same thing all over Farside. We can

 estimate how far down the old surface used to be. Below it we find

 old rocks and structures that go way back, just like on Nearside;

 above it everything's a mess-the rock all got pounded up and lots

 of melting took place when the garbage came down, all the way up to

 what's now the surface. It's what you'd expect."

 Hunt nodded his agreement. The energy released by that amount of

 mass being stopped dead in its tracks would have been phenomenal.

 "And nobody knows where it came from?" he asked.

 Steinfield repeated his head-shaking act. "Some people say that a

 big meteorite shower must have got in the way of the Moon. That may

 be true-it's never been argued conclusively one way or the other.

 The composition of the garbage isn't really like a lot of

 meteorites, though-it's closer to the Moon itself. It's as if they

 were made out of the same stuff-that's why it looks the same from

 higher up. You have to look at the microstructure to see the things

 I've been talking about."

 Hunt examined the specimen curiously for a while in silence. At

 length he laid it carefully on the top of one of the benches.

 Steinfield picked it up and returned it to its drawer.

 "Okay," Hunt said as Steinfield rejoined him. "Now, what about the

 Farside surface?"

 "Kronski and company."

 "Yes-as we discussed yesterday."

 "The Farside surface craters were made by the tail end of the

 garbage-dumping process, unlike the Nearside craters, which came

 from meteorite impacts oh. . . a few billion years back. In rock

 samples from around the rims of Farside craters we find that things

 like the activity levels of long half-life elements are very

 low-for instance, aluminum twenty-six and chlorine thirty-six; also

 the rates of absorption of hydrogen, helium, and inert gases

 from the Solar wind. Things like that tell us that those rocks

 haven't been lying there very long; and since they got where they

 were by being thrown out of the craters, the craters haven't been

 there very long, either." Steinfield made an exaggerated

 empty-handed gesture. "The rest you know. People like Kronski have

 done all the figuring and put them at around fifty thousand years

 old-yesterday!" He waited for a few seconds. "There must be a

 Lunarian connection somewhere. The number sounds like too much of a

 coincidence to me."

 Hunt frowned for a while and studied the detail of the Farside

 hemisphere of the model. "And yet, you must have known about all

 this for years," he said, looking up. "Why the devil did you wait

 for us to call you?"

 Steinfield showed his hands again and held the pose for a second or

 two. "Well, you UNSA people are pretty smart cookies. I figured you

 already knew about all this."

 "We should have picked it up sooner, I admit," Hunt agreed. "But

 we've been rather busy."

 "Guess so," Steinfield murmured. "Anyhow, there's even more to it.

 I've told you all the consistent things. Now I'll tell you some of

 the funny things. . . ." He broke off as if just struck by a new

 thought. "I'll tell you about the funny things in a second. How

 about a cup of coffee?"

 "Great."

 Steinfield lit a Bunsen burner, filled a large laboratory beaker

 from the nearest tap, and positioned it on a tripod over the flame.

 Then he squatted down to rummage in the cupboard beneath the bench

 and at last emerged triumphantly with two battered enamel mugs.

 "First funny thing: The distribution of samples that we dig up on

 Farside that have a history of recent radioactive exposure doesn't

 match the distribution or strength of the activity sources. There

 ought to be sources clustered in places where there aren't."

 "How about the meteorite storm including some, highly active

 meteorites?" Hunt suggested.

 "No, won't wash," Steinfield answered, looking along a shelf of

 glass jars and eventually selecting one that contained a

 reddish-brown powder and was labeled "Ferric Oxide." "If there were

 meteorites like that, bits of them should still be around. But the

 distribution of active elements in the garbage is pretty even-about

 normal for most rocks." He began spooning the powder into the mugs.

 Hunt inclined his head apprehensively in the direction of the jar.

 "Coffee doesn't seem to last long around here if you leave it lying

 around in coffee jars," Steinfield explained. He nodded toward a

 door that led into the room next-door and bore the sign "RESEARCH

 STUDENTS." Hunt nodded understandingly.

 "Vaporized?" Hunt tried.

 Again Steinfield shook his head.

 "In that case they wouldn't have been in proximity to the rock long

 enough to produce the effects observed." He opened another jar

 marked "Disodium Hydrogen Phosphate." "Sugar?"

 "Second funny thing," Steinfield continued. "Heat balance. We know

 how much mass came down, and from the way it fell, we can figure

 its kinetic energy. We also know from statistical sampling how much

 energy needed to be dissipated to account for the melting and

 structural deformations; also, we know how much energy gets

 produced by underground radioactivity and where. Problem: The

 equations don't balance; you'd need more energy to make what

 happened happen than there was available. So, where did the extra

 come from? The computer models of this are very complex and there

 could be errors in them, but that's the way it looks right now."

 Steinfield allowed Hunt to digest this while he picked up the

 beaker with a pair of tongs and proceeded to ifil the mugs. Having

 safely completed this operation, he began filling his pipe, stifi

 silent.

 "Any more?" Hunt asked at last, reaching for his own cigarette

 case.

 Steinfield nodded affirmatively. "Nearside exceptions. Most of the

 Nearside craters fit with the classic model: old. However, there

 are some scattered around that don't fit the pattern; cosmic-ray

 dating puts them at approximately the same age as those on Farside.

 The usual explanation is that some strays from the recent Farside

 bombardment overshot around to the Nearside. . ." He shrugged. "But

 there are peculiarities in some instances that don't really support

 that."

 "Like?"

 "Like some of the glasses and breccia formations show heating

 patterns that aren't consistent with recent impact . . . I'll show

 you what I mean later."

 Hunt turned this new information over in his mind as he lit a

 cigarette and sipped his drink. It tasted like coffee, anyway.

 "And that's the last funny thing?"

 "Yep, that's about the broad outline. No, wait a minute-last funny

 thing plus one. How come none of the meteorites in the shower hit

 Earth? Plenty of eroded remains of terrestrial meteorite craters

 have been identified and dated. All the computer simulations say

 that there should be a peak of abnormal activity at around this

 time, judging from how big the heap of crud that hit the Moon must

 have been. But there aren't any signs of one, even allowing for the

 effects of the atmosphere."

 Hunt and Steinfield spent the rest of that day and all of the next

 sifting through figures and research reports that went back many

 years. Hunt did not sleep at all during the following night, but

 smoked a pack of cigarettes and consumed a gallon of coffee while

 he stared at the walls of his hotel room and twisted the new

 information into every contortion his mind could devise.

 Fifty thousand years ago the Lunarians were on the Moon. Where they

 came from didn't really matter for the time being; that was another

 question. At about the same time an intense meteorite storm

 obliterated the Farside surface. Did the storm wipe out the

 Lunarians on the Moon? Possibly-but that wouldn't have had any

 effect on them back on whatever planet they had come from. If all

 the UNSA people on Luna were wiped out, it wouldn't make any

 lasting difference to Earth. So, what happened to the rest of the

 Lunarians? Why hadn't anybody seen them since? Had something else

 happened to them that was more widespread than whatever happened on

 the Moon? Could the something else have caused the meteorite storm?

 Could a second something else have both caused the first and

 extinguished the Lunarians in other places? Perhaps there was no

 connection? Unlikely.

 Then there were the inconsistencies that Steinfield had talked

 about. . . . An absurd idea came from nowhere, which Hunt rejected

 impatiently. But as the night wore on, it kept coming back again

 with growing insistence. Over breakfast he decided that he had to

 know the story that lay below those billions of tons of rubble.

 There had to be some way of extracting enough information to

 reconstruct the characteristics of the surface just before the

 bombardment commenced. He put the question to Steinfield later on

 that morning, back in the lab.

 Steinfield shook his head firmly. 'We tried for over a year to make

 a picture like that. We had twelve programmers working on it. They

 got nowhere. It's too much of a mess down there-all ploughed up.

 All you get is garbage."

 "How about a partial picture?" Hunt persisted. Was there any way

 that a contour map could be calculated, showing just the

 distribution of radiation sources immediately prior to the

 bombardment?

 "We tried that, too. You do get a degree of statistical clustering,

 yes. But there's no way we could tell where each individual sample

 was when it got irradiated. They would have been thrown miles by

 the impacts; a lot of them would have been bounced all over the

 place by repeat impacts. Nobody ever built a computer that could

 unscramble all that entropy. You're up against the second law of

 thermodynamics; if you ever built one, it wouldn't be a computer at

 all-it would be a refrigerator."

 "What about a chemical approach? What techniques are available that

 might reveal where the prebombardment craters were? Could their

 'ghosts' still be detected a thousand feet down below the surface?"

 "No way!"

 "There has to be some way of reconstructing what the surface used

 to look like."

 "Did you ever try reconstructing a cow from a truckload of

 hamburger?"

 They talked about it for another two days and into the nights at

 Steinfield's home and Hunt's hotel. Hunt told Steinfield why he

 needed the information. Steinfield told Hunt he was crazy. Then one

 morning, back at the laboratory, Hunt exclaimed, "The Near-side

 exceptions!"

 "Huh?"

 "The Nearside craters that date from the time of the storm. Some of

 them could be right from the beginning of it."

 "So?"

 "They didn't get buried like the first craters on Farside. They're

 intact."

 "Sure-but they won't tell you anything new. They're from recent

 impacts, same as everything that's on the surface of Farside."

 "But you said some of them showed radiation anomalies. That's just

 what I want to know more about."

 "But nobody ever found any suggestion of 'what you're talking

 about."

 "Maybe they weren't looking for the right things. They never had

 any reason to."

 The physics department had a comprehensive collection of Lunar rock

 samples, a sizeable proportion of which comprised specimens from

 the interiors and vicinities of the young, anomalous craters on

 Nearside. Under Hunt's persistent coercion, Steinfleld agreed to

 conduct a specially devised series of tests on them. He estimated

 that he would need a month to complete the work.

 Hunt returned to Houston to catch up on developments there and a

 month later flew back to Omaha. Steinfield's experiments had

 resulted in a series of computer-generated maps showing anomalous

 Nearside craters. The craters divided themselves into two classes

 on the maps: those with characteristic irradiation patterns and

 those without.

 "And another thing," Steinfield informed him. "The first class,

 those that show the pattern, have also got another thing in common

 that the second class hasn't got: glasses from the centers were

 formed by a different process. So now we've got anomalous anomalies

 on Nearside, too!"

 Hunt spent a week in Omaha and then went. directly to Washington to

 talk to a group of government scientists and to study the archives

 of a department that had ceased to exist more than fifteen years

 before. He then returned to Omaha once again and showed his

 findings to Steinfleld. Steinfield persuaded the university

 authorities to allow selected samples from their collection to be

 loaned to the UNSA Mineralogy and Petrology Laboratories in

 Pasadena, California, for further testing of an extremely

 specialized nature, suitable equipment for which existed at only a

 few establishments in the world.

 As a direct consequence of these tests, Caldwell authorized the

 issue of a top-priority directive to the UNSA bases at Tycho,

 Crisium, and some other Lunar locations, to conduct specific

 surveys in the areas of certain selected craters. A month after

 that, the first samples began arriving at Houston and were

 forwarded

 immediately to Pasadena; so were the large numbers of samples

 collected from deep below the surface of Farside.

 The outcome of all this activity was summarized in a memorandum

 stamped "SECRET" and written on the anniversary of Hunt's first

 arrival in Houston.

 9 September 2028

 TO:  G. Caidwell

 Executive Director

 Navigation and Communications

 Division

  

 FROM:Dr. V. Hunt Section Head

 Special Assignment Group L

  

 ANOMALIES OF LUNAR CR1~TERING

 (1)  Hemispheric Anomalies

 For many years, radical differences have been known to exist

 between the nature and origins of Lunar Nearside and Farside

 surface features.

 (a)  Nearside

 Original Lunar surface from 4 billion years ago. Nearly all surface

 crater- ing caused by explosive release of kinetic energy by

 meteorite impacts. Some younger-e.g., Copernicus, 850 million years

 old.

 (b) Farside

 Surface comprises large mass of recently added material to average

 depth circa 300 meters. Craters formed during final phase of this

 bombardment. Dating of these events coincides with Lunarian

 presence. Origin of born- bardment uncertain.

 (2)  Nearsicle Exceptions

 Known for approx. the last thirty years that some Nearside craters

 date from same period as those on Farside. Current theory ascribes

 them to overshoots from Pars ide bombardment.

 (3)  Conclusion From Recent Research at Omaha and Pasadena

 All Nearside exceptions previously attributed to meteoritic

 impacts. This belief now considered incorrect. Two classes of

 exceptions now distinguished:

 (a)  Class I Exceptions

 Confirmed as meteoritic impacts occurring 50,000 years ago.

 (b)  Class II Exceptions Differing from Class I in irradiation

 history, formation of glasses, absence of impact corroboration and

 positive results to tests for elements hyperium, bonnevilliuin,

 genevium. Example: Crater Lunar Catalogue reference MB 3O76/K2/E

 currently classed as meteoritic. Classification erroneous. Crater

 MB 3076/K2/E was made by a nucleonic bomb. Other cases confirmed.

 Investigations continuing.

 (4)  Farside Subsurface Intensive sampling from depths approximating

 that of the original crust indicate widespread nucleonic

 detonations prior to meteorite bombardment • Thermonuclear and

 fission reactions also suspected but impossible to confirm.

 (5)  Implications

 (a)  Sophisticated weapons used on Luna at or near time of Lunarian

 presence, mainly on Farside. Lunarian involvement implied but not

 proved.

 (b)  If Lunarians involved, possibility of more widespread conflict

 embracing Lunarian home planet. Possible cause of Lunarian

 extinction.

 (c)  Charlie was a member of more than a small, isolated expedition

 to our Moon. A significant Lunarian presence on the Moon is

 indicated. Mainly concentrated on Farside. Practically all traces

 since obliterated by meteorite storm.

 chapter twelve

  

 Front page feature of the New York Times,

 14 October 2028:

 LUNARTAN PLANET LOCATED

 Did Nuclear War Destroy Minerva?

 Sensational new announcements by UN Space Arm Headquarters,

 Washington, D.C., at last positively identify the home planet of

 the Lunarian civilization, known to have achieved space flight and

 reached Earth's Moon fifty thousand years ago. Inf ormation pieced

 together during more than a year of intense work by teams of

 scientists based at the UNSA Navigation and Communications Division

 Headquarters, Houston, Texas, shows conclusively that the Lunarians

 came from an Earth-like planet that once existed in our own Solar

 System.

 A tenth planet, christened Minerva after the Roman goddess of

 wisdom, is now known to have existed approximately 250 million

 miles from the Sun between the orbits of Mars and Jupiter, in the

 position now occupied by the Asteroid Belt, and is firmly

 established as having been the center of the Lunarian civilization.

 In a further startling announcement, a UNSA spokesman stated that

 data collected recently at the Lunar bases, following research at

 the University of Nebraska, Omaha, and the UNSA Mineralogy and

 Petrology Laboratories, Pasadena, California, indicate that a

 large-scale nuclear conifict took place on the Moon at the time the

 Lunarians were there. The possibility that Minerva was destroyed in

 a full-scale nuclear holocaust of interplanetary dimensions cannot

 be ruled out.

 Nucleonic Bombs Used at Crisium

 Investigations in recent months at the University of Nebraska and

 Pasadena give positive evidence that nucleonic bombs have caused

 craters on the Moon previously attributed to meteorite

 impacts. H-bomb and A-bomb effects are also suspected but cannot be

 confirmed.

 Dr. Saul Steinfield of the Department of Physics at the University

 of Nebraska explained: "For many years we have known that Lunar

 Farside craters are very much younger than most of the craters on

 Nearside. All the Farside craters, and a few of the Nearside ones,

 date from about the time of the Lunarians, and have always been

 thought to be meteoritic. Most of them, including all Farside ones,

 are. We have now proved, however, that some of the Nearside ones

 were made by bombs-for example, a few on the northern periphery of

 Mare Crisium and a couple near Tycho. So far, we've identified

 twenty-three positively and have a long list to check out."

 Further evidence collected from deep below the Farside surface

 indicates heavier bombing there than on Nearside. Obliteration of

 the original Farside surface by a heavy meteorite storm immediately

 after these events, accounts for only meteorite craters being found

 there today and makes detailed reconstruction of exactly what took

 place unlikely. "The evidence for higher activity on Farside is

 mainly statistical," said Steinfield yesterday. "There's no way you

 could figure anything specific-for example, an actual crater

 count-under all that garbage."

 The new discoveries do not explain why the meteorite storm happened

 at this time. Professor Pierre Guillemont of the Hale Observatory

 commented: "Clearly, there could be a connection with the Lunarian

 presence. Personally, I would be surprised if the agreement in

 dates is just a coincidence, although that, of course, is possible.

 For the time being, it must remain an unanswered question."

 Clues from ILIAD Mission

 Startling confirmation that Minerva disintegrated to form the

 Asteroid Belt has been received from space. Examination of Asteroid

 samples carried out on board the spacecraft Iliad, launched from

 Luna fifteen months ago to conduct a survey of parts of the Belt,

 shows many Asteroids to be of recent origin. Data beamed back to

 Mission Control Center at UNSA Operational Command Headquarters,

 Galveston, Texas, gives cosmic-ray exposure times and orbit

 statistics pinpointing Minerva's disintegration at fifty thousand

 years ago.

 Earth scientists are eagerly awaiting arrival of the first Asteroid

 material to be sent back from Iliad, which is due at Lana in six

 weeks time.

 Lunarian Origin Mystery

 Scientists do not agree that Lunarians necessarily originated on

 Minerva. Detailed physical examinations of "Charlie" (Times, 7

 November 2027) shows Lunarian anatomy identical to that of humans

 and incapable of being the product of a separate evolutionary

 process, according to all accepted theory. Conversely, absence of

 traces of Lunarian history on Earth seems to rule out any

 possibility of terrestrial origins. This remains the main focus of

 conrroversy among the investigators.

 In an exclusive interview, Dr. Victor Hunt, the British-born UNSA

 nucleonics expert coordinating Lunarian investigations from

 Houston, explained to a Times reporter: "We know quite a lot about

 Minerva now-its size, its mass, its climate, and how it rotated and

 orbited the Sun. Upstairs we've built a six-foot scale model of it

 that shows you every continent, ocean, river, mountain range, town,

 and city. Also, we know it supported an advanced civilization. We

 also know a lot about Charlie, including his place of birth, which

 is given on several of his personal documents as a town easily

 identified on Minerva. But that doesn't prove very much. My deputy

 was born in Japan, but both his parents come from Brooklyn. So

 until we know a lot more than we do, we can't even say for sure

 that the Minervan civilization and the Lunarian civilization were

 one and the same.

 "It's possible the Lunarians originated on Earth and either went to

 live on Minerva or made contact with another race who were there

 already. Maybe the Lunarians originated on Minerva. We just don't

 know. Whichever alternative you choose, you've got problems."

 Alien Marine Life Traced to Minerva

 Professor Christian Danchekker, an eminent biologist at Westwood

 Laboratories, Houston, and also involved in Lunarian research from

 the beginning, confirmed that the alien species of fish discovered

 among foodstocks in the ruin of a Lunarian base on Lunar Farside

 several months ago (Times, 6 July 2028) appear to have been a life

 form native to Minerva. Markings on the con-

 tainers in which the fish were preserved show that they came from a

 well-defined group of equatorial islands on Minerva. According to

 Professor Danchekker: "There is no question whatsoever that this

 species evolved on• a planet other than Earth. It seems clear that

 the fish belong to an evolutionary line that developed on Minerva,

 and they were caught there by members of a group of colonists from

 Earth who established an extension of their civilization there."

 The professor described the suggestion that the Lunarians might

 also be natives of Minerva as "ludicrous."

 Despite a wealth of new information, therefore, much remains to be

 explained about recent events in the Solar System. Almost

 certainly, the next twelve months will see further exciting

 developments.

 (See also the Special Supplement by our Science Editor on page

 14.)

 chapter thfrteen

  

 Captain Hew Mills, UN Space Arm, currently attached to the Solar

 System Exploration Program mission to the moons of Jupiter, stood

 gazing out of the transparent dome that surmounted the two-story

 Site Operations Control building. The building stood just clear of

 the ice, on a rocky knoll overlooking the untidy cluster of domes,

 vehicles, cabins, and storage tanks that went to make up the base

 he commanded. In the dim gray background around the base,

 indistinct shadows of rock buttresses and ice cliffs vanished and

 reappeared through the sullen, shifting vapors of the

 methane-ammonia haze. Despite his above-average psychological

 resilience and years of strict training, an involuntary shudder ran

 down his spine as he thought of the thin triple wall of the

 dome-all that separated him from this foreboding, poisonous, alien

 world, cold enough to freeze him as black as coal and as brittle as

 glass in seconds. Ganymede, largest of the moons of Jupiter, was,

 he thought, an awful place.

 "Close-approach radars have locked on. Landing sequence is active.

 Estimated time to touchdown: three minutes, fifty seconds." The

 voice of the duty controller at one of the consoles behind Mills

 interrupted his broodings.

 "Very good, Lieutenant," he acknowledged. "Do you have contact with

 Cameron?"

 "There's a channel open on screen three, sir."

 Mills moved around in front of the auxiliary console. The screen

 showed an empty chair and behind it an interior view of the

 low-level control room. He pressed the call button, and after a few

 seconds the face of Lieutenant Cameron moved into the viewing

 angle.

 "The brass are due in three minutes," Mills advised. "Everything

 okay?"

 "Looking good, sir."

 Mills resumed his position by the wall of the dome and noted

 with satisfaction the three tracked vehicles lurching into line to

 take up their reception positions. Minutes ticked by.

 "Sixty seconds," the duty controller announced. "Descent profile

 normal. Should make visual contact any time now."

 A patch of fog above the landing pads in the central area Of the

 base darkened and slowly materialized into the blurred outline of a

 medium-haul surface transporter, sliding out of the murk, balanced

 on its exhausts with its landing legs already fully extended. As

 the transporter came to rest on one of the pads and its shock

 absorbers flexed to dispose of the remaining momentum, the

 reception vehicles began moving forward. Mills nodded to himself

 and left the dome via the stairs that led down to ground level.

 Ten minutes later, the first reception vehicle halted outside the

 Operations Control building and an extending tube telescoped out to

 dock with its airlock. Major Stanislow, Colonel Peters, and a

 handful of aides walked through into the outer access chamber,

 where they were met by Mills and a few other officers. Mutual

 introductions were concluded, and without further preliminaries the

 party ascended to the first floor and proceeded through an elevated

 walkway into the adjacent dome, constructed over the head of

 number-three shalt. A labyrinth of stairs and walkways brought them

 eventually to number-three high-level airlock anteroom. A capsule

 was waiting beyond the airlock. For the next four minutes they

 plummeted down, down, deep into the ice crust of Ganymede.

 They emerged through another airlock into number-three low-level

 anteroom. The air vibrated with the humming and throbbing of unseen

 machines. Beyond the anteroom, a short corridor brought them at

 last to the low-level control room. It was a maze of consoles and

 equipment cubicles, attended by perhaps a dozen operators, all

 intent on their tasks. One of the longer walls, constructed

 completely from glass, gave a panoramic view down over the workings

 in progress outside the control room. Lieutenant Cameron joined

 them as they lined up by the glass to take in the spectacle beyond.

 They were looking out over the floor of an enormous cathedral, over

 nine hundred feet long and a hundred feet high, hewn and melted out

 of the solid ice. Its rough-formed walls glistened white and gray

 in the glare of countless arc lights. The floor was a litter of

 steel-mesh roadways, cranes, gantries, girders, pipes, tubes, and

 machinery of every description. The left-side wall, stretching away

 to the far end of the tunnel, carried a lattice of ladders,

 scaffolding, walkways, and cabins that extended up to the roof. All

 over the scene, scores of figures in ungainly heavy-duty spacesuits

 bustled about in a frenzy of activity, working in an atmosphere of

 pressurized argon to eliminate any risk of explosion from methane

 and the other gases released from the melted ice. But all eyes were

 fixed on the right-hand wall of the tunnel.

 For almost the entire length, a huge, sweeping wall of smooth,

 black metal reared up from the floor and curved up and over, out of

 sight above their heads to be lost below the roof of the cavern. It

 was immense-just a part of something vast and cylindrical, lying on

 its side, the whole of which must have stretched far down into the

 ice below floor level. At the near end, outside the control room, a

 massive, curving wing flared out of the cylinder and spanned the

 cavern above their heads like a bridge, before disappearing into

 the ice high on the far left. At intervals along the base of the

 wall, where metal and ice met, a series of holes six feet or so

 across marked the ends of the network of pilot tunnels that had

 been driven all around and over and under the object.

 It was far larger than a Vega. How long it had lain there, entombed

 beneath the timeless ice sheets of Ganymede, nobody knew. But the

 computations of field-vector resultants collected from the

 satellites had been right; there certainly had been something big

 down here-and it hadn't been just ore deposits.

 "Ma-an," breathed Stanislow, after staring for a long time. "So

 that's it, huh?"

 "That is big!" Peters added with a whistle. The aides echoed the

 sentiments dutifully.

 Stanislow turned to Mills. "Ready for the big moment, then,

 Captain?"

 "Yes, sir," Mills confirmed. He indicated a point about two hundred

 feet away where a group of figures was gathered close to the wall

 of the hull, surrounded by an assortment of equipment. Beside them

 a rectangular section of the skin about eight feet square had been

 cut away. "First entry point will be there- approximately

 amidships. The outer hull is double layered; both layers have been

 penetrated. Inside is an inner hull. . ." For the benefit of the

 visitors, he gestured toward a display positioned near the

 observation window showing the aperture in close-up.

 'Preliminary drilling shows that it's a single layer. The valves

 that you can see projecting from the inner hull were inserted to

 allow samples of the internal atmosphere to be taken before opening

 it up. Also, the cavity behind the access point has been

 argon-flooded."

 Mills turned to Cameron before going on to describe further details

 of the operation. "Lieutenant, carry out a final check of

 communications links, please."

 "Aye, aye, sir." Cameron walked back to the supervisory console at

 the end of the room and scanned the array of screens.

 "Ice Hole to Subway. Come in, please."

 The face of Commander Stracey, directing activities out near the

 hull, moved into view, encased in its helmet. "All checks completed

 and go," he reported. "Standing by, ready to proceed."

 "Ice Hole to Pithead. Report transmission quality."

 "All clear, vision and audio," responded the duty controller from

 the dome far above them.

 "Ice Hole to Ganymede Main." Cameron addressed screen three, which

 showed Foster at Main Base, situated seven hundred miles away to

 the south.

 "Clear."

 "Ice Hole to Jupiter Four. Report, please."

 "All channels clear and checking positive." The last acknowledgment

 came from the deputy mission director on screen four, speaking from

 his nerve center in the heart of the mile-long Jupiter Mission Four

 command ship, at that moment orbiting over two thousand miles up

 over Ganymede.

 "All channels positive and ready to proceed, sir," Cameron called

 to Mills.

 "Carry on, then, Lieutenant."

 "Aye, aye, sir."

 Cameron passed the order to Stracey, and out by the hull the

 ponderous figures lumbered into action, swinging forward a

 rockdrill supported from an overhead gantry. The group by the

 window watched in silence as the bit chewed relentlessly into the

 inner wall. Eventually the drill was swung back.

 "Initial penetration complete," Stracey's voice informed them.

 "Nothing visible inside."

 An hour later, a pattern of holes adorned the exposed expanse of

 metal. When lights were shone through and a TV probe in-

 serted, the screen showed snatches of a large compartment crammed

 with ducts and machinery. Shortl3~ afterward, Stracey's team began

 cutting out the panel with torches. Mills invited Peters and

 Stanislow to come and observe the operations first-hand. The trio

 left the control room, descended to the lower floor, and a few

 minutes later emerged, clad in spacesuits, through the airlock onto

 the tunnel floor. As they arrived at the aperture, the rectangle of

 metal was just being swung aside.

 The spotlights confirmed the general impression obtained via the

 drill holes. When preliminary visual examinations were completed,

 two sergeants who had been standing by stepped forward.

 Communications lines were plugged into their backpacks and they

 were handed TV cameras trailing cables, flashlights, and a pouch of

 tools and accessories. At the same time, other members of the team

 were smoothing over the jagged edges of the hole with pads of

 adhesive plastic to prevent tearing of the lines. An extending

 aluminum ladder was lowered into the hole and secured. The first

 sergeant to enter turned about on the edge of the hole, carefully

 located the top rung with his feet, and inch by inch disappeared

 down into the chamber. When he had found a firm footing, the second

 followed.

 For twenty minutes they clambered through the mechanical jungle,

 twisting and turning among the chaotic shadows cast by the lights

 pouring in through the hole above. Progress was slow; they had

 difficulty finding level surfaces to move on, since the ship

 appeared to be lying on its side. But foot by foot, the lines

 continued to snake spor~dically down into the darkness. Eventually

 the sergeants stopped before the noseward bulkhead of the

 compartment. The screens outside showed their way barred by a door

 leading through to whatever lay forward; it was made of a

 steely-gray metal and looked solid. It was also about ten feet high

 by four wide. A long conference produced the decision that there

 was no alternative but for them to return to where the hole had

 been cut to collect drills, torches, and all the other gadgetry

 needed to go through the whole drilling, purging, argon-filling,

 and cutting routine all over again. From the look of the door, it

 could be a long job. Mills, Stanislow, and Peters went back to the

 control room, collected the remainder of their party, and went to

 the surface installations for lunch. They returned three hours

 later.

 Behind the bulkhead was another machinery compartment, as

 confusing as the first but larger. This one had many doors leading

 from it-all closed. The two sergeants selected one at random in the

 ceiling above their heads, and while they were cutting through it,

 others descended into the first and second compartments to position

 rollers for minimizing the drag of their trailing cables, which was

 beginning to slow them down appreciably. When the door was cut, a

 second team relieved the first.

 They used another ladder to climb up through the door and found

 themselves standing on what was supposed to be the wall of a long

 corridor running toward the nose of the ship. A succession of

 closed doors, beneath their feet and over their heads, passed

 across the screens outside. Over two hundred feet of cabling had

 disappeared into the original entry point.

 "We're just passing the fifth bulkhead since entering the

 corridor," the commentary on the audio channel informed the

 observers. "The walls are smooth, and appear to be metallic, but

 covered with a plastic material. It's coming away in most places.

 The floor up one side is black and looks rubbery. There are lots of

 doors in both walls, all big like the first one. Some have. . ."

 "Just a second, Joe," the voice of the speaker's companion broke

 in. "Swing the big light down here - . . by your feet. See, the

 door you're standing on slides to the side. It's not closed all the

 way."

 The screens showed a pair of standard-issue heavy-duty UNSA boots,

 standing on a metal panel in the middle of a pooi of light. The

 boots shuffled to one side to reveal a black gap, about twelve

 inches wide, running down one side of the panel. They then stepped

 off the panel and onto the surrounding area as their owner

 evidently inspected the situation.

 "You're right," Joe's voice announced at last. "Let's see if it'll

 budge."

 There then followed a jumbled sequence of arms, legs, walls,

 ceilings, lightness, and darkness as TV cameras and lamps exchanged

 hands and were waved about. When a stable picture resulted, it

 showed two heavily clad arms braced across the gap.

 Eventually:

 "No dice. Stuck solid."

 "How about the jack?"

 "Yeah, maybe. Pass it down, willya?"

 A long dialogue followed during which the jack was maneu

 vered into place and expanded. It slipped off. Muttered curses.

 Another try. And then:

 "It's moving! Come on, baby . . - let's have a bit more light I

 think it'll go easy now. . - See if you can get a foot against

 it.. ."

 On the monitors the gray slab graunched gradually out of the

 picture. A black, bottomless pit fell away beneath.

 "The door is about two-thirds open," a breathless voice resumed.

 "It's gummed up there and won't go any further. We're gonna have a

 quick looksee around from up here, then we'll have to come back to

 get another ladder. Can somebody have one ready at the door that

 leads up into this corridor?"

 The camera closed in on the pitch-black oblong. A few seconds later

 a circle of light appeared in the scene, picking out part of the

 far wall. The light began moving around inside and the camera

 followed. Banks of what appeared to be electronic equipment.

 corners of cubicles . - . legs of furniture . . . sections of

 bulkhead. . . moved through the circle.

 "There's a lot of loose junk down at that end . . . Move the

 light around a bit . - ." Several colored cylinders in a heap,

 about

 the size of jelly jars . . . something like a braided belt, lying

 in a

 tangle . . . a small gray box with buttons on one face .

 "What was that? Go over a bit, Jerry. . . No, a bit more to the

 left."

 Something white. A bar of white.

 "Jeez! Look at that! Jerry, will you look at that?"

 The skull, grinning up out of the pool of eerie white light,

 startled even the watchers out in the tunnel. But it was the size

 of the skeleton that stunned them; no man had ever boasted a chest

 that compared with those massive hoops of bone. But besides that,

 even the most inexpert among the observers could see that whatever

 the occupants of this craft had been, they bore no resemblance to

 man.

 The stream of data taken in by the cameras flashed back to

 preprocessors in the low-level control room, and from there via

 cable to the surface of Ganymede. After encoding by the computers

 in the Site Operations Control building, it was relayed by

 microwave repeaters seven hundred miles to Ganymede Main Base,

 restored to full strength, and redirected up to the orbiting

 command ship. Here, the message was fed into the message exchange

 and scheduling processor complex, transformed into high-power laser

 modulations, and slotted into the main outgoing signal beam to

 Earth. For over an hour the data streaked across the Solar System,

 covering 186,000 miles every second, until the sensors of the

 long-range relay beacon, standing in Solar orbit not many million

 miles outside that of Mars, fished it out of the void, a

 microscopic fraction of its original power. Retransmission from

 here found the Deep Space Link Station, lodged in Trojan

 equilibrium with Earth and Luna, and eventually a synchronous

 communications satellite hanging high over the central USA, which

 beamed it down to a ground station near San Antonio. A landline

 network completed the journey to UNSA Mission Control, Galveston,

 where the information was greedily consumed by the computers of

 Operational Command Headquarters.

 The Jupiter FOur command ship had taken eleven months to reach the

 giant planet. Within four hours of the event, the latest

 information to be gathered by the mission was safely lodged in the

 data banks of UN Space Arm.

 chapter fourteen

  

 The discovery of the giant spaceship, frozen under the ice field of

 Ganymede, was a sensation but, in a sense, not something totally

 unexpected. The scientific world had more or less accepted as fact

 that an advanced civilization had once flourished on Minerva;

 indeed, if the arguments of the orthodox evolutionists were

 accepted, at least two planets-Minerva and Earth-had supported

 high-technology civilizations to some extent at about the same

 time. It did not come as a complete surprise, therefore, that man's

 persistent nosing around the Solar System should uncover more

 evidence of its earlier inhabitants. What did surprise everybody

 was the obvious anatomical difference between the Ganymeans-as the

 beings on board the ship soon came to be called-and the common form

 shared by the Lunarians and mankind.

 To the still unresolved question of whether the Lunarians and the

 Minervans had been one and the same or not, there was immediately

 added the further riddle: Where had the Ganymeans come from, and

 had they any connection with either? One bemused UNSA scientist

 summed up the situation by declaring that it was about time UNSA

 established an Alien Civilizations Division to sort out the whole

 damn mess!

 The pro-Danchekker faction quickly interpreted the new development

 as full vindication of evolutionary theory and of the arguments

 they had been promoting all along. Clearly, two planets in the

 Solar System had evolved intelligent life at around the same period

 in the past; the Ganymeans had evolved on Minerva and the Lunarians

 had evolved on Earth. They came independently from different lines

 and that was why they were different. Lunarian pioneers made

 contact with the Ganymeans and settled on Minerva-that was how

 Charlie had come to be born there. Extreme hostilities broke out

 between the two civilizations at some point, resulting in the

 extinction of both and the destruction of Minerva. The reasoning

 was consistent, plausible, and convincing. Against it, the single

 objection-that no evidence of any Lunarian

 civilization on Earth had ever been detected-began to look more

 lonely and more feeble every day. Deserters left the

 can't-be-of-Earth-origin camp in droves to join Danchekker's

 growing legions. Such was his gain in prestige and credibility that

 it seemed perfectly natural for his department to assume

 responsibility for conducting the preliminary evaluation of the

 data coming in from Jupiter.

 Despite his earlier skepticism, Hunt too found the case compelling.

 He and a large part of Group L's staff spent much time searching

 every available archive and record from such fields as archeology

 and paleontology for any reference that could be a pointer to the

 one-time existence of an advanced race on Earth. They even delved

 into the realms of ancient mythology and combed various

 pseudoscientific writings to see if anything could be extracted

 that was capable of substantiation, that suggested the works of

 superbeings in the past. But always the results were negative.

 While all this was going on, things began to happen in an area

 where progress had all but ground to a halt for many months.

 Linguistics had run into trouble: The meager contents of the

 documents found about Charlie's person simply had not contained

 enough information to make great inroads into deciphering a whole

 new, alien language. Of the two small books, one-that containing

 the maps and tables and resembling a handy pocket

 reference-together with the loose documents, had been translated in

 parts and had yielded most of the fundamental data about Minerva

 and quite a lot about Charlie. The second book contained a series

 of dated entries in handwritten script, but despite repeated

 attempts, it had obstinately defied decoding.

 This situation changed dramatically some weeks after the opening up

 of the underground remains of the devastated Lunarian base on Lunar

 Farside. Among the pieces of equipment included in that find had

 been a metal drum, containing a series of glass plates, rather like

 the magazines of some slide projectors. Closer examination of the

 plates revealed them to be simple projection slides, each holding a

 closely packed matrix of nilcrodot images which, under a

 microscope, were seen to be pages of printed text Constructing a

 system of lamps and lenses to project them onto a screen was

 straightforward, and in one fell swoop Linguistics be-

 came the owners of a miniature Lunarian library. Results followed

 in months.

 Don Maddson, head of the Linguistics section, rummaged through the

 litter of papers and files that swamped the large table standing

 along the left-hand wall of his office, selected a loosely clipped

 wad of typed notes, and returned to the chair behind his desk.

 "There's a set of these on its way up to you," he said to Hunt, who

 was sitting in the chair opposite. "I'll leave you to read the

 details for yourself later. For now, I'll just sum up the general

 picture."

 "Fine," Hunt said. "Fire away."

 "Well, for a start, we know a bit more about Charlie. One of the

 documents found in a pouch on the backpack appears to be something

 like army pay records. It gives an abbreviated history of some of

 the things he did and a list of the places he was posted to-that

 kind of thing."

 "Army? Was he in the army, then?"

 Maddson shook his head. "Not exactly. From what we can gather, they

 didn't differentiate much between civilian and military personnel

 in terms of how their society was structured. It's more like

 everybody belonged to different branches of the same big

 organization."

 "A sort of last word in totalitarianism?"

 "Yeah, that's about it. The State ran just about everything; it

 dominated every walk of life and imposed a rigid discipline

 everywhere. You went where you were sent and did what you were told

 to do; in most cases, that meant into industry, agriculture, or the

 military forces. Whatever you did, the State was your boss anyway

 ..-that's what I meant when I said they were all different branches

 of the same big organization."

 "Okay. Now, about the pay records?"

 "Charlie was born on Minerva, we know that. So were his parents.

 His father was some kind of machine operator; his mother worked in

 industry, too, but we can't make out the exact occupation. The

 records also tell us where he went to school, for how long, where

 he took his military training-everybody seemed to go through some

 kind of military training-and where he learned about electronics.

 It tells us all the dates, too."

 "So he was something like an electronics engineer, was he?" Hunt

 asked.

 "Sort of. More of a maintenance engineer than a design or

 development engineer. He seems to have specialized in military

 equipment-there's a long list of postings to combat units. The last

 one is interesting - ." Maddson selected a sheet and passed it

 across to Hunt. "That's a translation of the last page of postings.

 The final entry gives the name of a place and, alongside it, a

 description which, when translated literally, means 'off-planet.'

 That's probably the Lunarian name for whatever part of our Moon he

 was sent to."

 "Interesting," Hunt agreed. "You've found out quite a lot more

 about him."

 "Yep, we've got him pretty well taped. If you convert their dates

 into our units, he was about thirty-two years old at the date of

 his last posting. Anyhow, that's all really incidental; you can

 read the details. I was going to run over the picture we're getting

 of the kind of world he was born into." Maddson paused to con-suit

 his notes again. Then he resumed: "Minerva was a dying world. At

 the time we're talking about, the last cold period of the Ice Age

 was approaching its peak. I'm told that ice ages are

 Solar-System-wide phenomena; Minerva was a lot farther from the Sun

 than here, so as you can imagine, things were pretty bleak there."

 "You've only got to look at the size of those ice caps," Hunt

 commented.

 "Yes, exactly. And it was getting worse. The Lunarian scientists

 figured they had less than a hundred years to go before the ice

 sheets met and blanketed the whole planet completely. Now, as you'd

 expect, they had studied astronomy for centuries-centuries before

 Charlie's time, that is-and they'd known for a long time that

 things were going to get worse before they got better. So, they'd

 reached the conclusion, way back, that the only way out was to

 escape to another world. The problem, of course, was that for

 generations after they got the idea, nobody knew anything about how

 to do something about it. The answer had to lie somewhere along the

 line of better science and better technology. It became kind of a

 racial goal-the one thing that mattered, that generation after

 generation worked toward-the development of the sciences that would

 get them to places they knew existed, before the ice wiped out the

 whole race."

 Maddson pointed to another pile of papers on the corner of his

 desk. "This was the prime objective that the State was set up to

 achieve, and because the stakes were so high, e~verything was

 subordinated to that objective. Hence, from birth to death the

 individual was subordinated to the needs of the State. It was

 implied in everything they wrote and drummed into them from the

 time they were knee-high. Those papers are a translation of a kind

 of catechism they had to memorize at school; it reads like Nazi

 stuff from the nineteen thirties." He stopped at that point and

 looked at Hunt expectantly.

 Hunt looked puzzled. After a moment he said, "This doesn't quite

 make sense. I mean-how could they be striving to develop space

 flight if they were colonists from Earth? They must have already

 developed it."

 Maddson gave an approving nod. "Thought you might say that."

 "But. . . it's bloody silly."

 "I know. It implies they must have evolved on Minerva from

 scratch-unless they came from Earth, forgot everything they knew,

 and had to learn it all over. But that also sounds crazy to me."

 "Me, too." Hunt thought for a long time. At last he shook his head

 with a sigh. "Doesn't make sense. Anyhow, what else is there?"

 "Well, we've got the general picture of a totally authoritarian

 State, demanding unquestioning obedience from the individual and

 controlling just about everything that moves. Everything needs a

 license; there are travel licenses, off-work licenses, sick-ration

 licenses-even procreation licenses. Everything is in short supply

 and rationed by permits-food, every kind of commodity, fuel, light,

 accommodation-you name it. And to keep everybody in line, the State

 operates a propaganda machine like you never dreamed of. To make

 things worse, the whole planet was desperately short of every kind

 of mineral. That slowed them down a lot. Despite their concentrated

 effort, their rate of technological progress was probably not as

 fast as you'd think. Maybe a hundred years didn't give them as long

 as it sounds." Maddson turned some sheets, scanned the next one

 briefly, and then went on. "To make matters worse still, they also

 had a big political problem."

 "Go on."

 "Now, we're assuming that as their civilization developed, it

 followed similar lines to ours-first tribes, then villages, towns,

 nations, and so on. Seems reasonable. So, somewhere along the way

 they started discovering the different sciences, same as we did. As

 you'd expect, the same ideas started occurring to different people

 in different places at around the same time-like, we've gotta get

 outa this place. As these ideas became accepted, the Lunarians seem

 to have figured also that there just weren't sufficient resources

 for more than a few lucky ones to make it. No way were they going

 to get a whole planet full of people out."

 "So they fought about it," Hunt offered.

 "That's right. The way I picture it, lots of nations grew up, all

 racing each other, as well as the ice, to get the technological

 edge. Every other one was a rival, so they fought it out. Another

 thing that made them fight was the mineral shortage, especially the

 shortage of metallic ores." Maddson pointed at a map of Minerva

 mounted above the table. "See those dots on the ice sheets? Most of

 them were a combination of fortress and mining town. They dug right

 down through the ice to get at the deposits, and the army was there

 to make sure they kept the stuff."

 "And that was the way life was. Mean people, eh?"

 "Yeah, for generation after generation." Maddson shrugged. "Who

 knows? Maybe if we were freezing over fast, we'd be forced in the

 same direction. Anyhow, the situation had complications. They had

 the problem of having to divide their efforts and resources between

 two different demands all the time: first, developing a technology

 that would support mass interplanetary travel and, second,

 armaments and the defense organization to protect it

 -and there weren't a lot of resources to divide in the first place.

 Now, how would you solve a problem like that?"

 Hunt pondered for a while. "Cooperate?" he tried.

 "Forget it. They didn't think that way."

 "Only one other strategy possible, then: Wipe out the opposition

 first and then concentrate everything on the main objective."

 Maddson nodded solidly. "That is exactly what they did. War, or

 near war, was pretty well a natural way of life all through their

 history. Gradually the smaller fish were eliminated until, by the

 time we get to Charlie, there are only two superpowers left, each

 dominating one of the two big equatorial continental land

 masses . . ." He pointed at the map again. ". . . Cerios and

 Lambia. From various references, we know Charlie was a Cerian."

 "All set for the big showdown, then."

 "Check. The whole planet was one big fortress-factory. Every inch

 of surface was covered by hostile missiles; the sky was full of

 orbiting bombs that could be dropped anywhere. We get the

 impression that relative to the pattern of our own civilization,

 their armaments programs had taken a bigger share than space

 research and had progressed faster." Maddson shrugged again. "The

 rest you can guess."

 Hunt nodded slowly and thoughtfully. "It all fits," he mused. "It

 must have been a huge con, though. I mean, even from whichever side

 won, only a handful would have been able to get away in the end; I

 suppose they'd have been the ruling clique and its minions. Christ!

 No wonder they needed good propaganda; they-"

 Hunt stopped in midsentence and looked at Maddson with a curious

 expression. "Just a minute-there's something else in all this that

 doesn't add up." He paused to collect his thoughts. "They had

 already developed interplanetary travel-how else did they get to

 our Moon?"

 "We wondered that," Maddson said. "The only thing we could think of

 was that maybe they'd already figured on making for Earth

 eventually-that had to be the obvious choice. Maybe they were

 capable of sending a scouting group to stake the place out, but

 didn't have full-scale mass-transportation capacity yet. Probably

 they weren't too far away from their goal when they blew it.

 Perhaps if they'd pooled their marbles at that point instead of

 starting a crazy war over it, things might have been different."

 "Sounds plausible," Hunt agreed. "So Charlie could have been part

 of a reconnaissance mission sent on ahead, only the opposition had

 the same idea and they bumped into each other. Then they started

 blowing holes in our Moon. Disgraceful."

 A short silence ensued.

 "There's another thing I don't get, either," Hunt said, rubbing his

 chin.

 "What's that?"

 "Well, the opposition-the Lambians. Everybody in Navcomms is going

 around saying that the war that clobbered Minerva was fought

 between colonists from Earth-that must be Charlie's lot, the

 Cerians-and an alien race that belonged to Minerva-the Gan

 ymeans, who, from what you said, would be the Lambians. We said a

 moment ago that this idea of the Cerians being from Earth doesn't

 make sense, because if they had originated there, they wouldn't be

 trying to develop space ifight. We can't be one hundred percent

 certain of that because something unusual could have happened, such

 as the colony being cut off for a few thousand years for some

 reason. But you can't say that about the Lambians; they couldn't

 have been neck-and-neck rivals trying to develop space flight."

 "They already had it, for sure," Maddson completed for him. "We

 sure as hell found them on Ganymede."

 "Quite. And that ship was no beginner's first attempt, either. You

 know, I'm beginning to think that whoever the Lambians were, they

 weren't Ganymeans."

 "I think you're right," Maddson confirmed. "The Ganymeans were a

 totally different biological species. Wouldn't you expect that if

 they were the opposition in Lambia, somehow it would show up in the

 Lunarian writings? But it doesn't. Everything we've examined

 suggests that the Cerians and the Lambians were simply different

 nations of the same race. For example, we've found extracts from

 what appear to be Cerian newspapers, which included political

 cartoons showing Lambian figures; the figures are drawn as human

 forms. That wouldn't be so if the Lambians looked anything like the

 Ganymeans must have looked."

 "So it appears the Ganymeans had nothing to do with the war," Hunt

 concluded.

 "Right."

 "So where do they fit in?"

 Maddson showed his empty palms. "That's the funny thing. They don't

 seem to fit anywhere-at least, we haven't even found anything that

 looks like a reference to them."

 "Maybe they're just a big red herring, then. I mean, we've only

 supposed that they came from Minerva; nothing actually demonstrates

 that they did. Perhaps they never had anything to do with the place

 at all."

 "Could well be. But I can't help feeling that. . ."

 The chime on Maddson's desk display console interrupted the

 discussion. He excused himself and touched a button to accept the

 call.

 "Hi, Don," said the face of Hunt's assistant, upstairs in Group

 L's offices. "Is Vic there?" He sounded excited. Maddson swiveled

 the unit around to point in Hunt's direction.

 "It's for you," he said needlessly.

 "Vic," said the face without preamble. "I've just had a look at the

 reports of the latest tests that came in from Jupiter Four two

 hours ago. That ship under the ice and the big guys inside it-

 they've completed the dating tests." He drew a deep breath. "It

 looks like maybe we can forget the Ganymeans in all this Charlie

 business. Vic, if all the figures are right, that ship has been

 sitting there for something like twenty-five million years!"

 chapter fifteen

  

 Caidwell moved a step closer to inspect more carefully the

 nine-foot-high plastic model standing in the middle of one of the

 laboratories of the Westwood Biological Institute. Danchekker gave

 him plenty of time to take in the details before continuing.

 "A full-size replica of a Ganymean skeleton," he said. "Built on

 the strength of the data beamed back from Jupiter. The first

 in-disputable form of intelligent alien life ever to be studied by

 man." Caldwell looked up at the towering frame, pursed his lips in

 a silent whistle, and walked in a slow circle around and back to

 where the professor was standing. Hunt simply stood and swept his

 eyes up and down the full length of the model in wordless

 fascination.

 "That structure is in no way related to that of any animal ever

 studied on Earth, living or extinct," Danchekker informed them. He

 gestured toward it. "It is based on a bony internal skeleton, walks

 upright as a biped, and has a head on top-as you can see; but apart

 from such superficial similarities, it has clearly evolved from

 completely unfamiliar origins. Take the head as an obvious example.

 The arrangement of the skull cannot be reconciled in any way with

 that of known vertebrates. The face has not receded back into the

 lower skull, but remains a long, down-pointing snout that widens at

 the top to provide a broad spacing for the eyes and ears. Also, the

 back of the skull has enlarged to accommodate a developing brain,

 as in the case of man, but instead of assuming a rounded contour,

 it bulges back above the neck to counterbalance the protruding face

 and jaw. And look at the opening through the skull in the center of

 the forehead; I believe that this could have housed a sense organ

 that we do not possess-possibly an infrared detector inherited from

 a nocturnal, carnivorous ancestor."

 Hunt moved forward to stand next to Caidwell and peered intently at

 the shoulders. "These are unlike anything I've ever come across,

 too," he commented. "They're made up of . . . kind of overlapping

 plates of bone. Nothing like ours at all."

 "Quite," Danchekker confirmed. "Probably adapted from the

 remains of ancestral armor. And the rest of the trunk is also quite

 alien. There is a dorsal spine with an arrangement of ribs below

 the shoulder plates, as you can see, but the lowermost

 rib-immediately above the body cavity-has developed into a massive

 hoop of bone with a diametral strut stretching forward from an

 enlarged spinal vertebra. Now, notice the two systems of smaller

 linked bones at the sides of the hoop . . ." He pointed them out.

 "They were probably used to assist with breathing by helping to

 expand the diaphragm. To me, they look suspiciously like the

 degenerate remnants of a paired-limb structure. In other words,

 although this creature, like us, had two arms and walked on two

 legs, somewhere in his earlier ancestry were animals with three

 pairs of appendages, not two. That in itself is enough to

 immediately rule out any kinship with every vertebrate of this

 planet."

 Caldwell stooped to examine the pelvis, which comprised just an

 arrangement of thick bars and struts to contain the thigh sockets.

 There was no suggestion of the splayed dish form of the lower human

 torso.

 "Must've had peculiar guts, too," he offered.

 "It could be that the internal organs were carried more by

 suspension from the hoop above than by support from underneath,"

 Danchekker suggested. He stepped back and indicated the arms and

 legs. "And last, observe the limbs. Both lower limbs have two bones

 as do ours, but the upper arm and thigh are different-they have a

 double-bone arrangement as well. This would have resulted in vastly

 improved flexibility and the ability to perform a whole range of

 movements that could never be duplicated by a human being. And the

 hand has six digits, two of them opposing; thus its owner

 effectively enjoyed the advantages of having two thumbs. He would

 have been able to tie his shoes easily with one hand."

 Danchekker waited until Caldwell and Hunt had fully studied every

 detail of the skeleton to their satisfaction. When they looked

 toward him again, he resumed: "Ever since the age of the Ganymeans

 was verified, there has been a tendency for everybody to discount

 them as merely a coincidental discovery and having no direct

 bearing on the Lunarian question. I believe, gentlemen, that I am

 now in a position to demonstrate that they had a very real bearing

 indeed on the question."

 Hunt and Caldwell looked at him expectantly. Danchekker

 walked over to a display console by the wall of the lab, tapped in

 a code, and watched as the screen came to life to reveal a picture

 of the skeleton of a fish. Satisfied, he turned to face them.

 "What do you notice about that?" he asked.

 Caldwell stared obediently at the screen for a few seconds while

 Hunt watched in silence.

 "It's a funny fish," Caldwell said at last. "Okay-you tell me."

 "It is not obvious at first sight," Danchekker replied, "but by

 detailed comparison it is possible to relate the structure of that

 fish, bone for bone, to that of the Ganymean skeleton. They're both

 from the same evolutionary line."

 "That fish is one of those that were found on the Lunarian base on

 Farside," Hunt said suddenly.

 "Precisely, Dr. Hunt. The fish dates from some fifty thousand years

 ago, and the Ganymean skeleton from twenty-five million or so. It

 is evident from anatomical considerations that they are related and

 come from lines that branched apart from a common ancestral life

 form somewhere in the very remote past. It follows that they share

 a place of origin. We already know that the fish evolved in the

 oceans of Minerva; therefore, the Ganymeans also came from Minerva.

 We thus have proof of something that has been merely speculation

 for some time. All that was wrong with the earlier assumption was

 our failure to appreciate the gap in time between the presence of

 the Ganymeans on Minerva, and that of the Lunarians."

 "Okay," Caidwell accepted. "The Ganymeans came from Minerva, but a

 lot earlier than we thought. What's the big message and why did you

 call us over here?"

 "In itself, this conclusion is interesting but no more," Danchekker

 answered. "But it looks pale by comparison with what comes next. In

 fact"-he shot a glance at Hunt-"the rest tells us all we need to

 know to resolve the whole question once and for all."

 The two regarded him intently.

 The professor moistened his lips, then went on: "The Ganymean ship

 has been opened up fully, and we now have an extremely

 comprehensive inventory of practically everything it contamed. The

 ship was constructed for large freight-carrying capacity and was

 loaded when it met with whatever fate befell it on Ganymede. The

 cargo that it was carrying, in my opinion, con-

 stitutes the most sensational discovery ever to be made in the

 history of paleontology and biology. You see, that ship was

 carrying, among other things, a large consignment of botthtical and

 zoological specimens, some alive and in cages, the rest preserved

 in canisters. Presumably the stock was part of an ambitious

 scientific expedition or something of that nature, but that really

 doesn't matter for now. What does matter is that we now have in our

 possession a collection of animal and plant trophies the like of

 which has never before been seen by human eyes: a comprehensive

 cross section of many forms of life that existed on Earth around

 the late Oligocene and early Miocene periods, twenty-five million

 years ago!"

 Hunt and Caidwell stared at him incredulously. Danchekker folded

 his arms and waited.

 "Earth!" Caldwell managed, with difficulty, to form the word. "Are

 you telling me that the ship had been to Earth?"

 "I can see no alternative explanation," Danchekker returned.

 "Without doubt, the ship was carrying a variety of animal forms

 that have every appearance of being identical to species that have

 been well-known for centuries as a result of the terrestrial fossil

 record. The biologists on the Jupiter Four Mission are quite

 positive of their conclusions, and from the information they have

 sent back, I see no reason to doubt their opinions." Danchekker

 moved his hand back to the keyboard. "I will show you some examples

 of the kind of thing I mean," he said.

 The picture of the fish skeleton vanished and was replaced by one

 of a massive, hornless, rhinoceroslike creature. In the background

 stood an enormous opened canister from which the animal had

 presumably been removed. The canister was lying in front of what

 looked like a wall of ice, surrounded by cables, chains, and parts

 of a latticework built of metal struts.

 "The Baluchitherium, gentlemen," Danchekker informed them, "or

 something so like it that the difference escapes me. This animal

 stood eighteen feet high at the shoulder and attained a bulk in

 excess of that of the elephant. It is a good example of the

 titanotheres, or titanic beasts, that were abundant in the Americas

 during the Oligocene but which died out fairly rapidly soon

 afterward."

 "Are you saying that baby was alive when the ship ditched?"

 Caldwell asked in a tone of disbelief.

 Danchekker shook his head. "Not this particular one. As you can

 see, it has come to us in practically as good a condition as when

 it was alive. It was taken from that container in the background,

 in which it had been packed and preserved to keep for a long time.

 Fortunately, whoever packed it was an expert. However, as I said

 earlier, there were cages and pens in the ship that originally held

 live specimens, but by the time they were discovered they had

 deteriorated to skeleton condition, as had the crew. There were six

 of this particular species in the pens."

 The professor changed the picture to show a small quadruped with

 spindly legs.

 "Mesohippus-ancestor of the modern horse. About the size of a

 collie dog and walking on a three-toed foot with the center toe

 highly elongated, clearly foreshadowing the single-toed horse of

 today. There is a long list of other examples such as these, every

 one immediately recognizable to any student of early terrestrial

 life forms."

 Speechless, Hunt and Caldwell continued to watch as the view

 changed once more. This time it showed something that at first

 sight suggested a medium-sized ape from the gibbon or chimpanzee

 family. Closer examination, however, revealed differences that set

 it apart from the general category of ape. The skull construction

 was lighter, especially in the area of the lower jaw, where the

 chin had receded back to fall almost below the tip of the nose. The

 arms were proportionately somewhat on the short side for an ape,

 the chest broader and flatter, and the legs longer and straighter.

 Also, the opposability of the big toe had gone.

 Dancbekker allowed plenty of time for these points to register

 before continuing with his commentary.

 "Clearly, the creature you now see before you belongs to the

 general anthropoid line that includes both man and the great apes.

 Now, remember, this specimen dates from around the early Mbcene

 period. The most advanced anthropoid fossil from around that time

 so far found on Earth was discovered during the last century in

 East Africa and is known as Proconsul. Proconsul is generally

 accepted as representing a step forward from anything that had gone

 before, but he is definitely an ape. Here, on the other hand, we

 have a creature from the same period in time, but with distinctly

 more pronounced humanlike characteristics than Proconsul. In my

 opinion, this is an example of something that oc

 cupies a position corresponding to that of Proconsul, but on the

 other side of the split that occurred when man and ape went their

 own separate ways-in other words, a direct ancestor to the human

 line!" Danchekker concluded with a verbal flourish and gazed at the

 other two men expectantly. Caldwell stared back with widening eyes,

 and his jaw dropped as impossible thoughts raced through his mind.

 "Are you telling . . . that the Charlie guys could have . from

 that?"

 "Yes!" Danchekker snapped off the screen and swung back to face

 them triumphantly. "Established evolutionary theory is as sound as

 I've insisted all along. The notion that the Lunarians might have

 been colonists from Earth turns out indeed to be true, but not in

 the sense that was intended. There are no traces of their

 civilization to be found on Earth, because it never existed on

 Earth-but neither was it the product of any parallel process of

 evolution. The Lunarian civilization developed independently on

 Minerva from the same ancestral stock as we did and all other

 terrestrial vertebrates-from ancestors that were transported to

 Minerva, twenty-five million years ago, by the Ganymeans!"

 Danchekker thrust out his jaw defiantly and clasped the lapels of

 his jacket. "And that, Dr. Hunt, would seem to be the solution to

 your problem!"

 chapter sixteen

  

 The trail behind this rapid succession of new developments was by

 this time littered with the abandoned carcases of dead ideas. It

 reminded the scientists forcibly of the pitfalls that await the

 tin-wary when speculation is given too free a rein and imagination

 is allowed to float further and further aloft from the firm grounds

 of demonstrable proof and scientific rigor. The reaction against

 this tendency took the form of a generally cooler reception to

 Danchekker's attempted abrupt wrapping up of the whole issue than

 might have been expected. So many blind alleys had been exhausted

 by now, that any new suggestion met with instinctive skepticism and

 demands for corroboration.

 The discovery of early terrestrial animals on the Ganymean

 spaceship proved only one thing conclusively: that there were early

 terrestrial animals on the Ganymean spaceship. It didn't prove

 beyond doubt that other consignments had reached Minerva safely, or

 indeed, that this particular consignment was ever intended for

 Minerva. For one thing, Jupiter seemed a strange place to find a

 ship that had been bound for Minerva from Earth. All it proved,

 therefore, was that this consignment hadn't got to wherever it was

 supposed to go.

 Danchekker's conclusions regarding the origins of the Ganymeans,

 however, were fully endorsed by a committee of experts on

 comparative anatomy in London, who confirmed the affinity between

 the Ganymean skeleton and the Minervan fish. The corollary to this

 deduction-that the Lunarians too had evolved on Minerva from

 displaced terrestrial stock-although neatly accounting for the

 absence of Lunarian traces on Earth and for the evident lack of

 advanced Lunarian space technology, required a lot more in the way

 of substantiating evidence.

 In the meantime, Linguistics had been busy applying their newfound

 knowledge from the microdot library to the last unsolved riddle

 among Charlie's papers, the notebook containing the handwritten

 entries. The story that emerged provided vivid

 confirmation of the broad picture already deduced in cold and

 objective terms by Hunt and Steinfield; it was an account of the

 last days of Charlie's life. The revelations from the book lobbed

 yet another intellectual grenade in among the already disarrayed

 ranks of the investigators. But it was Hunt who finally pulled the

 pin.

  

 Qasping a folder of loose papers beneath his arm, Hunt strolled

 along the main corridor of the thirteenth floor of the Naycomms

 Headquarters building, toward the Linguistics section. Outside Don

 Maddson's office he stopped to examine with curiosity a sign

 bearing a string of two-inch-high Lunarian characters that had been

 pinned to the door. Shrugging and shaking his head, he entered the

 room. Inside, Maddson and one of his assistants were sitting in

 front of the perpetual pile of litter on the large side table away

 from the desk. Hunt pulled up a chair and joined them.

 "You've been through the translations," Maddson observed, noting

 the contents of the folder as Hunt began arranging them on the

 table.

 Hunt nodded. "Very interesting, this. There are a few points I'd

 like to go over just to make sure I've got it straight. Some parts

 just don't make sense."

 "We should've guessed," Maddson sighed resignedly. "Okay, shoot."

 "Let's work through the entries in sequence," Hunt suggested. "I'll

 stop when we get to the odd bits. By the way. . ." He inclined his

 head in the direction of the door. "What's the funny sign outside?"

 Maddson grinned proudly. "It's my name in Lunarian. Literally it

 means Scholar Crazy-Boy. Get it? Don Mad-Son. See?"

 "Oh, Christ," Hunt groaned. He returned his attention to the

 papers.

 "You've expressed the Lunarian-dated entries simply as consecutive

 numbers starting at Day One, but subdivisions of their day are

 converted into our hours."

 "Check," Maddson confirmed. "Also, where there's doubt about the

 accuracy of the translation, the phrase is put in parentheses with

 a question mark. That helps keep things simple."

 Hunt selected his first sheet. "Okay," he said. "Let's start at the

 beginning." He read aloud:

 "Day One. As expected, today we received full (mobilization alert?)

 orders. Probably means a posting somewhere. Koriel.

 This is Charlie's pal who turns up later, isn't it?"

 "Correct."

 thinks it could be to one of the (ice nests far-intercept?).

 What's that?"

 "That's an awkward one," Maddson replied. "It's a composite word;

 that's the literal translation. We think it could refer to a

 missile battery forming part of an outer defense perimeter, located

 out on the ice sheets."

 "Mmm-sounds reasonable. Anyhow, Hope so. It would be a change to

 get away from the monotony of this place. Bigger food ration in

 (ice-field combat zones?). Now . . ." Hunt looked up. "He says,

 'the monotony of this place.' How sure are we that we know where

 'this place' is?"

 "Pretty sure," Maddson replied with a firm nod. "The name of a town

 is written above the date at the top of the entry. It checks with

 the name of a coastal town on Cerios and also with the place given

 in his pay book for his last posting but one."

 "So you're sure he was on Minerva when he wrote this?"

 "Sure, we're sure."

 "Okay. I'll skip the next bit that talks about personal thoughts.

 "Day Two. Koriel's hunches have proved wrong for once. We're going

 to Luna."

 Hunt looked up again, evidently considering this part important.

 "How do you know he means Earth's Moon there?"

 "Well, one reason is that the word he uses there is the same as the

 last place the pay book says he was posted to. We guess it means

 Luna because that's where we found him. Another reason is that

 later on, as you'll have read, he talks about being sent

 specifically to a base called Seltar. Now, we've found a reference

 among some of the things turned up on Farside to a list of bases on

 place 'X,' and the name Seltar appears on the list. X is the same

 word that is written in the pay book and in the entry you've just

 read. Implication: X is a Lunarian name for Earth's Moon."

 Hunt thought hard for a while.

 "He arrived at Seltar, too, didn't he?" he said at last. "So if he

 knew where he was being sent as early as that, and you're certain

 he was being sent to the Moon, and he got where he was supposed to

 go. . . that rules out the other possibifity that occurred to me.

 There's no way he could have been scheduled for Luna but rerouted

 somewhere else at the last minute without the entry in the pay book

 being changed, is there?"

 Maddson shook his head. "No way. Why'd you want to make up things

 like that anyhow?"

 "Because I'm looking for ways to get around what comes later. It

 gets crazy."

 Maddson looked at Hunt curiously but suppressed his question. Hunt

 looked down at the papers again.

 "Days Three and Four describe news reports of the fighting on

 Minerva. Obviously a large-scale conflict had already broken out

 there. It looks as if nuclear weapons were being used by then-that

 bit near the end of Day Four, for instance: It looks like the

 Lambians have succeeded in confusing the (sky nets?) over Paverol-

 That's a Cerian town, isn't it? Over half the city vaporized

 instantly. That doesn't sound like a limited skirmish. What's a sky

 net-some kind of electronic defense screen?"

 "Probably," Maddson agreed.

 "Day Five he spent helping to load the ships. From the descriptions

 of the vehicles and equipment, it sounds as if they were embarking

 a large military force of some kind." Hunt scanned rapidly down the

 next sheet. "Ah, yes-this is where he mentions Seltar. We're going

 with the Fourteenth Brigade to join the Annihilator emplacement at

 Seltar. There's something crazy about this Annihilator. But we'll

 come back to that in a minute.

 "Day Seven. Embarked four hours ago as scheduled. Still sitting

 here. Takeoff delayed, since whole area under heavy missile attack.

 Hills inland all on fire. Launching pits intact but situation

 overhead confused. Unneutralized Lambian satellites still covering

 our flight path.

 "Later. Received clearance for takeoff suddenly, and the whole

 flight was away in minutes. Didn't delay in planetary orbit at all-

 still not very healthy-so set course at once. Two ships reported

 lost on the way up. Koriel is taking bets on how many ships from

 our flight touch down on Luna. We're flying inside a tight defense

 screen but must stand out clearly on Lambian search radars. There's

 a bit about Koriel ifirting with one of the girls from a signals

 unit-quite a character, this Koriel, wasn't he . . . ? More

 war news received en route. . . Now-this is the part I meant." Hunt

 found the entry with his finger.

 "Day Eight. In Lunar orbit at last!" He laid the sheet down on the

 table and looked from one linguist to the other. "In Lunar orbit at

 last.' Now, you tell me: Exactly how did that ship travel from

 Minerva to our Moon in under two of our days? Either there is some

 form of propulsion that UNSA ought to be finding out about, or

 we've been very wrong about Lunarian technology all along. But it

 doesn't fit. If they could do that, they didn't have any problem

 about developing space flight; they were way ahead of us. But I

 don't believe it-everything says they had a problem."

 Maddson made a show of helplessness. He knew it was crazy. Hunt

 looked inquiringly at Maddson's assistant, who merely shrugged and

 pulled a face.

 "You're sure he means Lunar orbit-our Moon?"

 "We're sure." Maddson was sure.

 "And there's no doubt about the date he shipped out?" Hunt

 persisted.

 "The embarkation date is stamped in the pay book, and it checks

 with the date of the entry that says he shipped out. And don't

 forget the wording on Day-where was it?-here, Day Seven. 'Embarked

 four hours ago as scheduled'- See, 'as scheduled.' No suggestion of

 a change in timetable."

 "And how certain is the date he reached Luna?" asked Hunt.

 "Well that's a little more difficult. Just going by the dates of

 the notes, they're one Lunarian day apart, all right. Now, it's

 possible that he used a Minervan time scale on Minerva, but

 switched to some local system when he got to Luna. If so, it's a

 big coincidence that they tally like they do, but"-he

 shrugged-"it's possible. The thing that bothers me about that idea,

 though, is the absence of any entries between the ship-out date and

 the arrival-at-Luna date. Charlie seems to have written his diary

 regularly. If the voyage took months, like you're saying it should

 have, it looks funny to me that there's nothing at all between

 those dates. It's not as if he'd have been short of free time."

 Hunt reflected for a few moments on these possibilities. Then he

 said, "There's worse to come. Let's press on for now." He picked up

 the notes and resumed:

 "Landed at last, five hours ago. (Expletive) what a mess! The

 landscape below as we came in on the (approach run?) was glow-

 ing red in places all around Seltar for miles. There were lakes of

 molten rock, bright orange, some with walls of rocks plunging

 straight into them where whole mountains ha1'e been blown away. The

 base is covered deep in dust, and some of the surface installations

 have been crushed by flying debris. The defenses are holding out,

 but the outer perimeter is (torn to shreds?). Most

 important-~unreadable] diameter dish of the Annihilator is intact

 and it is operational. The last group of ships in our flight was

 wiped out by an enemy strike coming in from deep space. Koriel has

 been collecting on all sides."

 Hunt laid the paper down and looked at Maddson. "Don," he said,

 "how much have you been able to piece together about this

 Annihilator thing?"

 "It was a kind of superweapon. There was more information in some

 of the other texts. Both sides had them, sited on Minerva itself

 and, from what you're reading right now, on Luna too." He added as

 an afterthought, "Maybe on other places as well."

 "Why on Luna? Any ideas?"

 "Our guess is that the Cerians and the Lambians must have dcveloped

 space-ifight technology further than we thought," Maddson said.

 "Perhaps both sides had selected Earth as their target destination

 for the big move, and they both sent advance parties to Luna to set

 up a bridgehead and. . . protect the investment."

 "Why not on Earth itself, then?"

 "I dunno."

 "Let's stick with it for now, anyway," Hunt said. "How much do we

 know about what these Annihilators were?"

 "From the description dish, apparently it was some kind of

 radiation projector. From other clues, they fired a high-energy

 photon beam probably produced by intense matter-antimatter

 reaction. If so, the term Annihilator is particularly apt; it

 carries a double meaning."

 "Okay." Hunt nodded. "That's what I thought. Now it goes silly." He

 consulted his notes. "Day Nine they were getting organized and

 repairing battle damage. What about Day Ten, then, eh?" He resumed

 reading:

 "Day Ten. Annihilator used for the first time today. Three

 fifteen-minute blasts aimed at Calvares, Paneris, and Sellidorn.

 Now, they're all Lambian cities, right?

 "So they have this Annihilator emplacement, sitting on our Moon,

 happily picking off cities on the surface of Minerva?"

 "Looks like it," Maddson agreed. He didn't look very happy. "Well,

 I don't believe it," Hunt declared firmly. "I don't believe they

 had the ability to register a weapon that accurately over that

 distance, and even if they could, I don't believe they could have

 held the beam narrow enough not to have burned up the whole planet.

 And I don't believe the power density at that range could have been

 high enough to do any damage at all." He looked at Maddson

 imploringly. "Christ, if they had technology like that, they

 wouldn't have been trying to perfect interplanetary travel- they'd

 have been all over the bloody Galaxy!"

 Maddson gestured wide with his arms. "I just translate what the

 words tell me. You figure it out."

 "It goes completely daft in a minute," Hunt warned. "Where was I,

 now. . . ?"

 He continued to read aloud, describing the duel that developed

 between the Cerian Annihilator at Seltar and the last surviving

 Lambian emplacement on Minerva. With a weapon firing from far out

 in space and commanding the whole Minervan surface, the Cerians

 held the key that would decide the war. Destroying it was obviously

 the first priority of the Lambian forces and the prime objective of

 their own Annihilator on Minerva. The Annihilators required about

 one hour to recharge between firings, and Charlie's notes conveyed

 vividly the tension that built up in Seltar as they waited, knowing

 that an incoming blast could arrive at any second. All around

 Seltar the battle was building up to a frenzy as Lambian ground and

 space-borne forces hurled everything into knocking out Seltar

 before it could score on its distant target. The skill in operating

 the weapon lay in computing and compensating for the distortions

 induced in the aiming system by enemy electronic countermeasures.

 In one passage, Charlie detailed the effects of a near miss from

 Minerva that lasted for sixteen minutes, during which time it

 melted a range of mountains about fifteen miles from Seltar,

 including the Twenty-second and Nineteenth Armored Divisions and

 the Forty-fifth Tactical Missile Squadron that had been positioned

 there.

 "This is it," Hunt said, waving one of the sheets in the air.

 "Listen to this. We've got it! Four minutes ago we fired a

 concentrated burst at maximum power. The announcement has just come

 over the loudspeaker down here that it scored a direct hit.

 Everyone is laughing and clapping each other on the back. Some of

 the women are crying with relief. That," said Hunt, slapping the

 papers down on the table and slumping back in his chair with

 exasperation, "is bloody ridiculous! Within four minutes of firing

 they had confirmation of a hit! How? How in God's name could they

 have? We know that when Minerva and Earth were at their closest,

 the distance between them would have been one hundred fifty to one

 hundred sixty million miles. The radiation would have taken

 something like thirteen minutes to cover that distance, and there

 would have to be at least another thirteen minutes before anybody

 on Luna could possibly know about where it struck. So, even with

 the planets at their closest positions, they'd have needed at least

 twenty-six minutes to get that report. Charlie says they got it in

 under four! That is absolutely, one-hundred-percent impossible!

 Don, how sure are you of those numbers?"

 "As sure as we are of any other Lunarian time units. If they're

 wrong, you might as well tear up that calendar you started out with

 and go all the way back to square one."

 Hunt stared at the page for a long time, as if by sheer power of

 concentration he could change the message contained in the neatly

 formatted sheets of typescript. There was only one thing that these

 figures could mean, and it put them right back to the beginning. At

 length he carried on:

 "The next bit tells how the whole Seltar area came under sustained

 bombardment. A detachment including Charlie and Koriel was sent out

 overland to man an emergency command post about eleven miles from

 Seltar Base. . . I'll skip the details of that .

 Yes, here's the next bit that worries me. Under Day Twelve: Set off

 on time in a small convoy of two scout cars and three tracked

 trucks. The journey was weird-miles of scorched rocks and glowing

 pits. We could feel the heat inside the truck. Hope the shielding

 was good. Our new home is a dome, and underneath it are levels

 going down about fifty feet. Army units dug in the hills all

 around. We have landline contact with Seltar, but they seem to have

 lost touch with Main HQ at Gorda. Probably means all longdistance

 landlines are out and our comsats are destroyed. Again no

 broadcasts from Minerva. Lots of garbled military traffic. They

 must have assumed (frequency priority?). Today was the first time

 above surface for many days. The face of Minerva looks

 dirty and blotchy. There," Hunt said. "When I first read that, I

 thought he was referring to a video transmission. But thinking

 about it, why would he say it that way in that context? Why right

 after 'the first time above surface for many days'? But he couldn't

 have seen any detail of Minerva from where he was, could he?"

 "Could have used a pretty ordinary telescope," Maddson's assistant

 suggested.

 "Could have, I suppose," Hunt reflected. "But you'd think there'd

 be more important things to worry about than star gazing in the

 middle of all that. Anyhow, he goes on: About two-thirds is blotted

 out by huge clouds of brown and gray, and coastal outlines are

 visible only in places. There is a strange red spot glowing

 through, somewhere just north of the equator, with black spreading

 out from it hour by hour. Koriel reckons it's a city on fire, but

 it must be a tremendous blaze to be visible through all that. We've

 been watching it move across all day as Minerva rotates. Huge

 explosions over the ridge where Seltar Base is."

 The narrative continued and confirmed that Seltar was totally

 destroyed as the fighting reached its climax. For two days the

 whole area was systematically pounded, but miraculously the

 underground parts of the dome remained intact, although the upper

 levels were blown away. Afterward the scattered survivors from the

 military units occupying the surrounding hills began straggling

 back, some in vehicles and many on foot, to the dome, which by this

 time was the only inhabitable place left for miles.

 The expected waves of victorious Lambian troopships and armored

 columns failed to materialize. From the regular pattern of incoming

 salvos, the Cerian officers slowly realized that there was nothing

 left of the enemy army that had moved forward into the mountains

 around Seltar. In the fighting with the Cerian defenses, the

 Lambians had suffered immense losses and their survivors had pulled

 out, leaving missile batteries programmed to fire robot mode to

 cover their withdrawal.

 On Day Fifteen, Charlie wrote: Two more red spots on Minerva, one

 northeast of the first and the other well south. The first has

 elongated from northwest to southeast. The whole surface is now

 just a snags of dirty brown with huge areas of black mixing in with

 it. Nothing at all on radio or video from Minerva; everything

 blotted out by atmospherics.

 There was nothing further to be done at Seltar. The inhabitable

 parts of what had been the dome were packed with survivors and

 wounded; already many were having to live in the assortment of

 vehicles huddled around outside it. Supplies df food and oxygen,

 never intended for more than a small company, would give only a

 temporary respite. The only hope, slender as it was, lay in

 reaching HO Base at Gorda overland-a journey estimated to require

 twenty days.

 On Day Eighteen, the departure from the dome was recorded as

 follows: Formed up in two columns of vehicles. Ours moved out half

 an hour ahead of the second as a small advanced scouting group. We

 reached a ridge about three miles from the dome and could see the

 main column finish loading and begin lining up. That was when the

 missiles hit. The first salvo caught them all out in the open. They

 didn't have a chance. We trained our receivers on the area for a

 while, but there was nothing. The only way we'll ever get off this

 death furnace is if there are ships left at Gorda. As far as I

 know, there are 340 of us, including over a hundred girls. The

 column comprises five scout cars, eight tracked trucks, and ten

 heavy tanks. It will be a grim journey. Even Koriel isn't taking

 bets on how many get there.

 Minerva is just a black, smoky ball, difficult to pick out against

 the sky. Two of the red spots have joined up to form a line

 stretching at an angle across the equator. Must be hundreds of

 miles long. Another red line is growing to the north. Every now and

 then, parts of them glow orange through the smoke clouds for a few

 hours and then die down again. Must be a mess there.

 The column moved slowly through the desert of scorched gray dust,

 and its numbers shrank rapidly as wounds and radiation sickness

 took their toll. On Day Twenty-six they encountered a Lambian

 ground force and for three hours fought furiously among the crags

 and boulders. The battle ended when the remaining Lambian tanks

 broke cover and charged straight into the Cerian position, only to

 be destroyed right on the perimeter line by Cerian women firing

 laser artillery at point-blank range. After the battle there were

 165 Cerians left, but not enough vehicles to carry them.

 After conferring, the Cerian officers devised a plan to continue

 the journey leapfrog fashion. Half the company would be moved half

 a day's distance forward and left there with one truck to use as

 living accommodation, while the remaining vehicles returned to

 collect the group left behind. So it would go on all the way to

 Gorda. Charlie and Koriel were among the first group lifted on

 ahead.

 Day Twenty-eight. Uneventful drive. Set up camp in a shady gorge

 and watched the convoy about-face again and begin its long haul

 back for the others. They should be back this time tomorrow.

 Nothing much to do until then. Two died on the drive, so there are

 fifty-eight of us here. We take turns to rest and eat inside the

 truck. When it's not your turn, you make yourself as comfortable as

 you can sitting among the rocks. Koriel is furious. He's just spent

 two hours sitting outside with four of the artillery girls. He says

 whoever designed spacesuits should have thought of situations like

 that.

 The convoy never returned.

 Using the single remaining truck, the group continued the same

 tactic as before, ferrying one party on ahead, dumping them, and

 returning for the rest. By Day Thirty-three, sickness, mishaps, and

 one suicide had depleted the numbers such that all the survivors

 could be carried in the truck at once, so the leapfrogging was

 discontinued. Driving steadily, they estimated they would reach

 Gorda on Day Thirty-eight. On Day Thirty-seven, the truck broke

 down. The spare parts needed to repair it were not available.

 Many were weak. It was clear that an attempt to reach Gorda on foot

 would be so slow that nobody would make it.

 Day Thirty-seven. Seven of us-four men (myself, Koriel, and two of

 the combat troopers) and three girls-are going to make a dash for

 Gorda while the others stay put in the truck and wait for a rescue

 party. Koriel is cooking a meal before we set out. He has been

 saying what he thinks of life in the infantry-doesn't seem to think

 much of it at all.

 Some hours after they left the truck, one of the troopers climbed a

 crag to survey the route ahead. He slipped, gashed his suit, and

 died instantly from explosive decompression. Later on, one of the

 girls hurt her leg and lagged farther and farther behind as the

 pain worsened. The Sun was sinking and there was no time for

 slowing down. Everybody in the group wrestled with the same

 equation in his mind-one life or twenty-eight?-but said nothing.

 She solved the problem for them by quietly closing her air valve

 when they stopped to rest.

 Day Thirty-eight. Just Koriel and me now-like the old days.

 The trooper suddenly doubled up, vomiting violently inside his

 helmet. We stood and watched while he died, and could do nothing.

 Some hours later, one of the girls collapsed and said she couldn't

 go on. The other insisted on staying with her until we sent help

 from Gorda. Couldn't really argue-they were sisters. That was some

 time ago. We've stopped for a breather; I am getting near my limit.

 Koriel is pacing up and down impatiently and wants to get moving.

 That man has the strength of twelve .

 Later. Stopped at last for a couple of hours sleep. I'm sure Koriel

 is a robot-just keeps going and going. Human tank. Sun very low in

 sky. Must make Gorda before Lunar night sets in.

 Day Thirty-nine. Woke up freezing cold. Had to turn suit heating up

 to maximum-still doesn't feel right. Think it's developing a fault.

 Koriel says I worry too much. Time to be on the move again. Feel

 stiff all over. Seriously wondering if I'll make it. Haven't said

 so.

 Later. The march has been a nightmare. Kept falling down. Koriel

 insisted that the only chance we had was to climb up out of the

 valley we were in and try a shortcut over a high ridge. I made it

 about halfway up the cleft leading toward the ridge. Every step up

 the cleft I could see Minerva sitting right over the middle of the

 ridge, gashes of orange and red all over it, like a (macabre?)

 face, taunting. Then I collapsed. When I came to, Koriel had

 dragged me inside a pilot digging of some sort. Maybe someone wag

 going to put an outpost of Gorda here. That was a while ago now.

 Koriel has gone on and says help will be back before I know it.

 Getting colder all the time. Feet numb and hands stiff. Frost

 starting to form in helmet-difficult to see.

 Thinking about all the people strung out back there with night

 coming down, all like me, wondering if they'll be picked up. if we

 can hold out we'll be all right. Koriel will make it. If it were a

 thousand miles to Gorda, Koriel would make it.

 Thinking about what has happened on Minerva and wondering if, after

 all this, our children will live on a sunnier world-and if they do,

 if they will ever know what we did.

 Thinking about things I've never really thought about before. There

 should be better ways for people to spend their lives than in

 factories, mines, and army camps. Can't think what, though-that's

 all we've ever known. But if there is warmth and color and light

 somewhere in this Universe, then maybe something worthwhile will

 come out of what we've been through.

 Too much thinking for one day. Must sleep for a while now.

 Hunt found he had read right through to the end, absorbed in the

 pathos of those final days. His voice had fallen to a sober pitch.

 A long silence ensued.

 "Well, that's it," he concluded, a little more briskly. "Did you

 notice that bit right at the end? In the last few lines he was

 talking about seeing the surface of Minerva again. Now, they might

 have used telescopes earlier on, but in the situation he was in

 there, they'd hardly be lugging half an observatory along with

 them, would they?"

 Maddson's assistant looked thoughtful. "How about that periscope

 video gadget that was in the helmet?" he suggested. "Maybe there's

 something wrong in the translation. Couldn't he be talking about

 seeing a transmission through that?"

 Hunt shook his head. "Can't see it. I've heard of people watching

 TV in all sorts of funny places, but never halfway up a bloody

 mountain. And another thing: He described it as sitting up above

 the ridge. That implies it's really out there. If it were a view on

 video, he'd never have worded it that way. Right, Don?"

 Maddson nodded wearily. "Guess so," he said. "So, where do we go

 from here?"

 Hunt looked from Maddson to the assistant and back again. He leaned

 his elbows on the edge of the table and rubbed his face and

 eyeballs with his fingers. Then he sighed and sat back.

 "What do we know for sure?" he asked at last. "We know that those

 Lunarian spaceships got to our Moon in under two days. We know that

 they could accurately aim a weapon, sited on our Moon, at a

 Minervan target. We also know that the round trip for

 electromagnetic waves was much shorter than it could possibly have

 been if we've been talking about the right place. Finally, we can't

 prove but we think that Charlie could stand on our Moon and see

 quite clearly the surface features of Minerva. Well, what does that

 add up to?"

 "There's only one place in the Universe that fits all those

 numbers," Maddson said numbly.

 "Exactly-and we're standing on it! Maybe there was a planet called

 Minerva outside Mars, and maybe it had a civilization on it. Maybe

 the Ganymeans took a few animals there and maybe they

 didn't. But it doesn't really matter any more, does it? Because the

 only planet Charlie's ship could possibly have taken off from, and

 the only planet they could have aimed that Minihilator at, and the

 only planet he could have seen in detail from Luna.-is this one!

 "They were from Earth all along!

 "Everyone will be jumping off the roof and out of every window in

 the building when this gets around Navcomms."

 chapter seventeen

  

 With the first comprehensive translation of the handwritten

 notebook, the paradox was complete. Now there were two consistent

 and apparently irrefutable bodies of evidence, one proving that the

 Lunarians must have evolved on Earth, and the other proving that

 they couldn't have.

 All at once the consternation and disputes broke out afresh. Lights

 burned through the night at Houston and elsewhere as the same

 inevitable chains of reasoning were reeled out again and yet again,

 the same arrays of facts scrutinized for new possibilities or

 interpretations. But always the answers came out the same. Only the

 notion of the Lunarians having been the product of a parallel line

 of evolution appeared to have been abandoned permanently; more than

 enough theories were in circulation already without anyone having

 to invoke this one. The Navcomms fraternity disintegrated into a

 myriad of cliques and strays, scurrying about to ally first with

 this idea and then with that. As the turmoil subsided, the final

 lines of defense fortified themselves around four main camps.

 The Pure Earthists accepted without reservation the deductions from

 Charlie's diary, and held that the Lunarian civilization had

 developed on Earth, flourished on Earth, and destroyed itself on

 Earth and that was that. Thus, all references to Minerva and its

 alleged civilization were nonsense; there never had been any

 civilization on Minerva apart from that of the Ganymeans, and that

 was too far in the remote past to have any bearing on the Lunarian

 issue. The world depicted on Charlie's maps was Earth, not Minerva,

 so there had to be a gross error somewhere in the calculations that

 put it at 250 million miles from the Sun. That this corresponded to

 the orbital radius of the Asteroids was just coincidence; the

 Asteroids had always been there, and anything from Iliad that said

 they hadn't was suspect and needed doublechecking.

 That left only one question unexplained: Why didn't Charlie's

 maps look like Earth? To answer this one, the Earthists launched a

 series of commando raids against the bastions of accepted

 geological theory and methods of geological datingi Drawing on the

 hypothesis that continents had been formed initially from a single

 granitic mass that had been shattered under the weight of immense

 ice caps and pushed apart by polar material rushing in to ifil the

 gaps, they pointed to the size of the ice caps shown on the maps

 and stressed how much larger they were than anything previously

 supposed to have existed on Earth. Now, if in fact the maps showed

 Earth and not Minerva, that meant that the Ice Age on Earth had

 been far more severe than previously thought, and its effects on

 surface geography correspondingly more violent. Add to this the

 effects of the crustal fractures and vulcanism as described in

 Charlie's observations of Earth (not Minerva), and there was,

 perhaps, enough in all that to account for the transformation of

 Charlie's Earth into modern Earth. So, why were there no traces to

 be found today of the Lunarian civilization? Answer: It was clear

 from the maps that most of it had been concentrated on the

 equatorial belt. Today that region was completely ocean, dense

 jungle, or drifting desert-adequate to explain the rapid erasure of

 whatever had been left after the war and the climatic cataclysm.

 The Pure Earthist faction attracted mainly physicists and

 engineers, quite happy to leave the geologists and geographers to

 worry about the bothersome details. Their main concern was that the

 sacred principle of the constancy of the velocity of light should

 not be thrown into the melting pot of suspicion along with

 everything else.

 By entrenching themselves around the idea of Earth origins, the

 Pure Earthists had moved into the positions previously defended

 fanatically by the biologists. Now that Danchekker had led the way

 by introducing his fleet of Ganymean Noah's Arks, the biologists

 abruptly turned about-face and rallied behind their new assertion

 of Minervan origin from displaced terrestrial ancestors. What about

 Charlie's Minerva-Luna flight time and the loop delay around the

 Annihilator fire-control system? Something was screwed up in the

 interpretation of Minervan time scales that accounted for both

 these. Okay, how could Charlie see Minerva from Luna? Video

 transmissions. Okay, how could they aim the Annihilator over that

 distance? They couldn't. The dish at Seltar

 was only a remote-control tracking station. The weapon itself was

 mounted in a satellite orbiting Minerva.

 The third flag flew over the Cutoff Colony Theory. According to

 this, an early terrestrial civilization had colonized Minerva, and

 then declined into a Dark Age during which contact with the colony

 was lost. The deteriorating conditions of the Ice Age later

 prompted a recovery on both planets, with the difference that

 Minerva faced a life-or-death situation and began the struggle to

 regain the lost knowledge in order that a return to Earth might be

 made. Earth, however, was going through lean times of its own and,

 when the advance parties from Minerva eventually made contact,

 didn't react favorably to the idea of another planetful of mouths

 to feed. Diplomacy having failed, the Minervans set up an invasion

 beachhead on Luna. The Annihilator at Seltar had thus been firing

 at targets on Earth; the translators had been misled by identical

 place-names on both planets-like Boston, New York, Cambridge, and a

 hundred other places in the USA, many of the towns on Minerva had

 been named after places on Earth when the original colony was first

 established.

 The defenders of these arguments drew heavily from the claims of

 the Pure Earthists to account for the absence of Lunarian relics on

 Earth. In addition, they produced further support from the unlikely

 domain of the study of fossil corals in the Pacific. It had been

 known for a long time that analysis of the daily growth rings of

 ancient fossil corals provided a measure of how many days there had

 been in the year at various times in the past, and from this how

 fast the forces of tidal friction were slowing down the rotation of

 the Earth about its axis. These researches showed, for example,

 that the year of 350 million years ago contained about four hundred

 days. Ten years previously, work conducted at the Darwin Institute

 of Oceanography in Australia, using more refined and more accurate

 techniques, had revealed that the continuity from ancient to modem

 had not been as smooth as supposed. There was a confused period in

 the recent past-at about fifty thousand years before-during which

 the curve was discontinuous, and a comparatively abrupt lengthening

 in the day had occurred. Furthermore, the rate of deceleration was

 measurably greater after this discontinuity than it had been

 before. Nobody knew why this should have happened, but it seemed to

 indicate a period of violent climatic upheaval, as the corals had

 taken generations to set-

 tie down to a stable growth pattern afterward. The data seemed to

 indicate that widespread changes had taken place on Earth around

 this mysterious point in time, probably accompanied by global

 flooding, and all in all there could be enough behind the story to

 explain the complete disappearance of any record of the Lunarians'

 existence.

 The fourth main theory was that of the Returning Exiles, which

 found these attempts to explain the disappearance of the

 terrestrial Lunarians artificial and inadequate. The basic tenet of

 this theory was that there could be only one satisfactory reason

 for the fact that there were no signs of Lunarians on Earth: There

 had never been any Lunarians on Earth worth talking about. Thus,

 they had evolved on Minerva as Danchekker maintained and had

 evolved an advanced civilization, unlike their contemporary

 brothers on Earth, who remained backward. Eventually, compelled by

 the Ice Age threat of extinction, the two superpowers of Cerios and

 Lambia had emerged and begun the race toward the Sun in the way

 described by Linguistics. Where Linguistics had gone wrong,

 however, was that by the time of Charlie's narrative, these events

 were already historical; the goal was already achieved. The

 Lambians had drawn ahead by a small margin and had already

 commenced building settlements on Earth, several of them named

 after their own towns on Minerva. The Cerians followed hard on

 their heels and established a fire base on Luna, the objective of

 course being to knock out the Lambian outposts on Earth before

 moving in themselves.

 This theory did not explain the flight time of Charlie's ship, but

 its supporters attributed the difficulty to unknown differences

 between Minervan and local (Lunar) dating systems. On the other

 hand, it required only a few pilot Lambian bases to have been set

 up on Earth by the time of the war; thus, whatever remained of

 these after the Cerian assault, could credibly have vanished in

 fifty thousand years.

 And as the battle lines were drawn up and the first ranging shots

 started whistling up and down the corridors of Navcomms, in

 no-man's-land sat Hunt. Somehow, he was convinced, everybody was

 right. He knew the competence of the people around him and had no

 doubt in their ability to get their figures right. If, after weeks

 or months of patient effort, one of them pronounced that x was 2,

 then he was quite prepared to believe that, in all probability, it

 would turn out to be. Therefore, the paradox had to be an illusion.

 To try to argue which side was right and which was wrong was

 missing the whole point. Somewhere in the maze, probably so

 fundamental that nobody had even thought to question it, there had

 to be a fallacy-some wrong assumption that seemed so obvious they

 didn't even realize they were making it. If they could just get

 back to fundamentals and identify that single fallacy, the paradox

 would vanish and everything that was being argued would slide

 smoothly into a consistent, unified whole.

 chapter eighteen

  

 "You want me to go to Jupiter?" Hunt repeated slowly, making sure

 he had heard correctly.

 Caidwell stared back over his desk impassively. "The Jupiter Five

 Mission will depart from Luna in six weeks time," he stated.

 "Danchekker has gone about as far as he can go with Charlie. What

 details are left to be found out can be taken care of by his staff

 at Westwood. He's got better things he'd like to be doing on

 Ganymede. There's a whole collection of alien skeletons there, plus

 a shipload of zoology from way back that nobody's ever seen the

 like of before. It's got him excited. He wants to get his hands on

 them. Jupiter Five is going right there, so he's getting together a

 biological team to go with it."

 Hunt already knew all this. Nevertheless, he went through the

 motions of digesting the information and checking through it for

 any point he might have missed. After an appropriate pause he

 replied:

 "That's fine-I can see his angle. But what does it have to do with

 me?"

 Caidwell frowned and drummed his fingers, as if he had been

 expecting this question to come, while hoping it wouldn't.

 "Consider this an extension of your assignment," he said at last.

 "From all the arguing that's going on around this place, nobody

 seems to be able to agree just how the Ganymeans fit into the

 Charlie business. Maybe they're a big part of the answer, maybe

 they're not. Nobody knows for sure."

 "True." Hunt nodded.

 Caidwell took this as all the confirmation he needed. "Okay," he

 said with a gesture of finality. "You've done a good job so far on

 the Charlie side of the picture; maybe it's time to balance things

 up a bit and give you a crack at the other side, too. Well"- he

 shrugged-"the information's not here-it's on Ganymede. In six weeks

 time, J Five shoves off for Ganymede. It makes sense to me that you

 go with it."

 Hunt's brow remained creased in an expression that indicated he

 still didn't quite see everything. He posed the obvious question.

 "What about the job here?"

 "What about it? Basically you correlate information that comes from

 dilTerent places. The information will still keep coming from the

 places whether you're in Houston or on board Jupiter Five. Your

 assistant is capable of stepping in and keeping the routine

 background research and cross-checking running smoothly in Group L.

 There's no reason why you can't continue to be kept updated on

 what's going on if you're out there. Anyhow, a change of scene

 never did anybody any harm. You've been on this job a year and a

 half now."

 "But we're talking about a break of years, maybe."

 "Not necessarily. Jupiter Five is a later design than I Four; it

 will make Ganymede in under six months. Also, a number of ships are

 being ferried out with the Jupiter Five Mission to start build-.

 ing up a fleet that will be based out there. Once a reserve's been

 established, there will be regular two-way traffic with Earth. In

 other words, once you've had enough of the place we'll have no

 problem getting you back."

 Hunt reflected that nothing ever seemed to stay normal for very

 long when Caidwell was around. He felt no inclination to argue with

 this new directive. On the contrary, the prospect excited him. But

 there was something that didn't quite add up in the reasons

 Caidwell was giving. Hunt had the same feeling he had experienced

 on previous occasions that there was an ulterior motive lurking

 beneath the surface somewhere. Still, that didn't really matter.

 Caidwell seemed to have made up his mind, and Hunt knew from

 experience that when Caidwell made up his mind that something would

 be so, then by some uncanny power of preordination, so it would

 inevitably turn out to be.

 Caldwell waited for possible objections. Seeing that none were

 forthcoming, he concluded: "When you joined us, I told you your

 place in UNSA was out front. That statement implied a promise. I

 always keep promises."

 For the next two weeks Hunt worked frantically, reorganizing the

 operation of Group L and making his own personal preparations for a

 prolonged absence from Earth. After that, he was sent to Galveston

 for two weeks.

 By the third decade of the twenty-first century, commercial flight

 reservations to Luna could be made through any reputable travel

 agent, for seats either on regular UNSA ships or on chartered ships

 crewed by UNSA officers. The standards of comfort provided on

 passenger ifights were high, and accommodation at the larger Lunar

 bases was secure, enabling Lunar travel to become a routine chore

 in the lives of many businessmen and a memorable event for more

 than a few casual visitors, none of whom needed any specialized

 knowledge or training. Indeed, one enterprising consortium,

 comprised of a hotel chain, an international airline, a travel-tour

 operator, and an engineering corporation, had commenced the

 construction of a Lunar holiday resort, which was already fully

 booked for the opening season.

 Places like Jupiter, however, were not yet open to the public.

 Persons detailed for assignments with the UNSA deep-space missions

 needed to know what they were doing and how to act in emergency

 situations. The ice sheets of Ganymede and the cauldron of Venus

 were no places for tourists.

 At Galveston, Hunt learned about UNSA spacesuits and the standard

 items of ancillary equipment; he was taught the use of

 communication equipment, survival kits, emergency life support

 systems, and repair kits; he practiced test routines, radiolocation

 procedures, and equipment-fault diagnostic techniques. "Your life

 could depend on this little box," one instructor told the group.

 "You could wind up in a situation where it fails and the only

 person inside a hundred miles to fix it is you." Doctors lectured

 on the rudiments of space medicine and recommended methods of

 dealing with oxygen starvation, decompression, heat stroke, and

 hypothermia. Physiologists described the effects on bone calcium of

 long periods of reduced body weight, and showed how a correct

 balance could be maintained by a specially selected diet and drugs.

 UNSA officers gave useful hints that covered the whole gamut of

 staying alive and sane in alien environments, from navigating afoot

 on a hostile surface using satellite beacons as ref erence points,

 to the art of washing one's face in zero gravity.

 And so, just over four weeks after his directive from CaIdwell,

 Hunt found himself fifty feet below ground level at pad twelve of

 number-two terminal complex twenty miles outside Houston, walking

 along one of the access ramps that connected the wall of the silo

 to the gleaming hull of the Vega. An hour later, the hy

 draulic ramps beneath the platform supporting the tail thrust the

 ship slowly upward and out, to stand clear on the roof of the

 structure. Within minutes the Vega was streaking into the darkening

 void above. It docked thirty minutes later, two and a half seconds

 behind schedule, with the half-mile-diameter transfer sateffite

 Kepler.

 On Kepler the passengers traveling on to Luna.-including Hunt,

 three propulsion-systems experts keen to examine the suspected

 Ganymean gravity drives, four communications specialists, two

 structural engineers, and Danchekker's team, all destined to join

 Jupiter Five-transferred to the ugly and ungainly Capella class

 moonship that would carry them for the remainder of the journey

 from Earth orbit to the Lunar surface. The voyage lasted thirty

 hours and was uneventful. After they had been in Lunar orbit for

 twenty minutes, the announcement came over the loudspeaker that the

 craft had been cleared for descent.

 Shortly afterward, the unending procession of plains, mountains,

 crags, and hills that had been marching across the cabin display

 screen slowed to a halt and the view started growing perceptibly

 larger. Hunt recognized the twin ring-walled plains of Ptolemy and

 Albategnius, with its central conical mountain and Crater Klein

 interrupting its encircling wall, before the ship swung northward

 and these details were lost off the top of the steadily enlarging

 image. The picture stabilized, now centered upon the broken and

 crumbling mountain wall that separated Ptolemy from the southern

 edge of the Plain of Hipparchus. What had pre- viously looked like

 smooth terrain resolved itself into a jumble of rugged cliffs and

 valleys, and in the center, glints of sunlight began to appear,

 reflected from the metal structures of the vast base below.

 As the outlines of the surface installations materialized out of

 the gray background and expanded to fill the screen, a yellow glow

 in the center grew, gradually transforming into the gaping entrance

 to one of the underground moonship berths. There was a brief

 impression of tiers of access levels stretching down out of sight

 and huge service gantries swung back to admit the ship. Rows of

 brilliant arc lights flooded the scene before the exhaust from the

 braking motors blotted out the view. A mild jolt signaled that the

 landing legs had made contact with Lunar rock, and silence fell

 abruptly inside the ship as the engines were cut. Above

 the squat nose of the moonship, massive steel shutters rolled

 together to seal out the stars. As the berth filled with air, a new

 world of sound impinged on the ears of the ship's occupants.

 Shortly afterward, the access ramps slid smoothly from the walls to

 connect the ship to the reception bays.

 Thirty minutes after clearing arrival formalities, Hunt emerged

 from an elevator high atop one of the viewing domes that dominated

 the surface of Ptolemy Main Base. For a long time he gazed soberly

 at the harsh desolation in which man had carved this oasis of life.

 The streaky blue and white disk of Earth, hanging motionless above

 the horizon, suddenly brought home to him the remoteness of places

 like Houston, Reading, Cambridge, and the meaning of everything

 familiar, which until so recently he had taken for granted. In his

 wanderings he had never come to regard any particular place as

 home; unconsciously he had always accepted any part of the world to

 be as much home as any other. Now, all at once, he realized that he

 was away from home for the first time in his life.

 As Hunt turned to take in more of the scene below, he saw that he

 was not alone. On the far side of the dome a lean, balding figure

 stood staring silently out over the wilderness, absorbed in

 thoughts of its own. Hunt hesitated for a long time. At last he

 moved slowly across to stand beside the figure. All around them the

 mile-wide clutter of silver-gray metallic geometry that made up the

 base sprawled amid a confusion of pipes, girders, pylons, and

 antennae. On towers above, the radars swept the skyline in endless

 circles, while the tall, praying-mantislike laser transceivers

 stared unblinkingly at the heavens, carrying the ceaseless

 dialogues between the base computers and unseen communications

 satellites fifty miles up. In the distance beyond the base, the

 rugged bastions of Ptolemy's mountain wall towered above the plain.

 From the blackness above them, a surface transporter was sliding

 toward the base on its landing approach.

 Eventually Hunt said: "To think-a generation ago, all this was just

 desert." It was more a thought voiced than a statement.

 Danchekker did not answer for a long time. When he did, he kept his

 eyes fixed outside.

 "But man dared to dream . . ." he murmured slowly. After a pause he

 added, "And what man dares to dream today, tomorrow he makes come

 true."

 Another long silence followed. Hunt took a cigarette from his case

 and lit it. "You know," he said at last, blowing a stream of smoke

 slowly toward the glass wall of the dome, "it's going to be a long

 voyage to Jupiter. We could get a drink down below-one for the

 road, as it were."

 Danchekker seemed to turn the suggestion over in his mind for a

 while. At length he shifted his gaze back within the confines of

 the dome and turned to face Hunt directly.

 "I think not, Dr. Hunt," he said quietly.

 Hunt sighed and made as if to turn.

 "However, . . ." The tone of Danchekker's voice checked him before

 he moved. He looked up. "If your metabolism is capable of

 withstanding the unaccustomed shock of nonalcoholic beverages, a

 strong coffee might, ah, perhaps be extremely welcome."

 It was a joke. Danchekker had actually cracked a joke!

 "I'll try anything once," Hunt said as they began walking toward

 the door of the elevator.

 chapter nineteen

  

 Embarkation on the orbiting Jupiter Five command ship was not

 scheduled to take place until a few days later. Danchekker would be

 busy making final arrangements for his team and their equipment to

 be ferried up from the Lunar surface. Hunt, not being involved in

 these undertakings, prepared an itinerary of places to visit during

 the free time he had available.

 The first thing he did was fly to Tycho by surface transporter to

 observe the excavations still going on around the areas of some of

 the Lunarian finds, and to meet at last many of the people who up

 until then had existed only as faces on display screens. He also

 went to see the deep mining and boring operations in progress not

 far from Tycho, where engineers were attempting to penetrate to the

 core regions of the Moon. They believed that concentrations of rich

 metal-bearing ores might be found there. If this turned out to be

 so, within decades the Moon could become an enormous spaceship

 factory, where parts prefabricated in processing and forming plants

 on the surface would be ferried up for final assembly in Lunar

 orbit. The economic advantages of constructing deep-space craft

 here and from Lunar materials, without having to lift everything up

 out of Earth's gravity pit to start with, promised to be enormous.

 Next, Hunt visited the huge radio and optical observatories of

 Giordano Bruno on Farside. Here, sensitive receivers, operating

 fully shielded from the perpetual interference from Earth, and

 gigantic telescopes, freed from any atmosphere and not having to

 contend with distortions induced by their own weights, were pushing

 the frontiers of the known Universe way out beyond the limits of

 their Earth-bound predecessors. Hunt sat fascinated in front of the

 monitor screens and resolved planets of some of the nearer stars;

 he was shown one nine times the size of Jupiter, and another that

 described a crazy figure-eight orbit about a double star. He gazed

 deep into the heart of the Andromeda Galaxy, and out at distant

 specks on the very threshold of detection. Scientists and

 physicists described the strange new picture of the Cosmos that was

 beginning to emerge from their work here and explained some of the

 exciting advances in concepts of space-time mechanics, which

 indicated that feasible methods could be devised for dcforming

 astronomic geodesics in such a way that the limitations once

 thought to apply to extreme effective velocities could be avoided.

 If so, interstellar travel would become a practical proposition;

 one of the scientists confidently predicted that man would cross

 the Galaxy within fifty years.

 Hunt's final stop brought him back to Nearside-to the base at

 Copernicus near which Charlie had been found. Scientists at

 Copernicus had been studying descriptions of the terrain over which

 Charlie had traveled and the accompanying sketched maps; the

 in-formation contained in the notebook had been transmitted up from

 Houston. From the traveling times, distances, and estimates of

 speed quoted, they suspected that Charlie's journey had begun

 somewhere on Farside and had brought him, by way of the Jura

 Mountains, Sinus Iridurn, and Mare Imbrium, to Copernicus. Not

 everybody subscribed to this opinion, however; there was a problem.

 For some unaccountable reason, the directions and compass points

 mentioned in Charlie's notes bore no relationship to the

 conventional lunar north-south that derived from its axis of

 rotation. The only route for Charlie's journey that could be

 interpreted to make any sense at all was the one from Farside

 across Mare Imbrium, but even that only made sense if a completely

 new direction was assumed for the north-south axis.

 Attempts to locate Gorda had so far met with no positive success.

 From the tone of the final entries in the diary, it could not have

 been very far from the spot where Charlie was found. About fifteen

 miles south of this point was an area covered by numerous

 overlapping craters, all confirmed as being meteoritic and of

 recent origin. Most researchers concluded that this must have been

 the site of Gorda, totally obliterated by a freak concentration of

 meteorites in the as yet unexplained storm.

 Before leaving Copernicus, Hunt accepted an invitation to drive out

 overland and visit the place of Charlie's discovery. He was

 accompanied by a Professor Alberts from the base and the crew of

 the UNSA survey vehicle.

 * * *

 The survey vehicle lumbered to a halt in a wide gorge, between

 broken walls of slate-gray rock. All around it, the dust had been

 churned into a bewildering pattern of groo$es and ridges by

 Caterpillar tracks, wheels, landing gear, and human feet-evidence

 of the intense activity that had occurred there over the last

 eighteen months. From the observation dome of the upper cabin, Hunt

 recognized the scene immediately; he had first seen it in

 Caidwell's office. He identified the large mound of rubble against

 the near wall of the gorge, and above it the notch leading into the

 cleft.

 A voice called from below. Hunt rose to his feet, his movements

 slow and clumsy in his encumbering spacesuit, and clambered through

 the floor hatch and down a short ladder to the control cabin. The

 driver was stretching back in his seat, taking a long drink from a

 flask of hot coffee. Behind him, the sergeant in command of the

 vehicle was at a videoscreen, reporting back to base via comsat

 that they had reached their destination without mishap. The third

 crew member, a corporal who was to accompany Hunt and Alberts

 outside and who was already fitted out, was helping the professor

 secure his helmet. Hunt took his own helmet from the storage rack

 by the door and fixed it in place. When the three were ready, the

 sergeant supervised the final checkout of life-support and

 communications systems and cleared them to pass, one by one,

 through the airlock to the outside.

 "Well, there you are, Vie. Really on the Moon now." Alberts's voice

 came through the speaker inside Hunt's helmet. Hunt felt the spongy

 dust yield beneath his boots and tried a few experimental steps up

 and down.

 "It's like Brighton Beach," he said.

  

 "Okay, you guys?" asked the voice of the UNSA corporal.

 "Okay."

 "Sure."

 "Let's go, then."

 The three brightly colored figures-one orange, one red, and one

 green-began moving slowly along the well-worn groove that ran up

 the center of the mound of rubble. At the top they stopped to gaze

 down at the survey vehicle, already looking toylike in the gorge

 below.

 They moved into the cleft, climbing between vertical walls of rocks

 that closed in on both sides as they approached the bend. Above the

 bend the cleft straightened, and in the distance Hunt

 could see a huge wall of jagged buttresses towering over the

 foothills above them-evidently the ridge described in Charlie's

 note. He could picture vividly the scene in this very place so long

 ago, when two other figures in spacesuits had toiled onward and

 upward, their eyes fixed on that same feature. Above it, the red

 and black portent of a tormented planet had glowered down on their

 final agony like.

 Hunt stopped, puzzled. He looked up at the ridge again, then turned

 to stare at the bright disk of Earth, shining far behind his right

 shoulder. He turned to look one way, then back again the other.

 "Anything wrong?" Alberts, who had continued on a few paces, had

 turned and was staring back at him.

 "I'm not sure. Hang on there a second." Hunt moved up alongside the

 professor and pointed up and ahead toward the ridge. "You're more

 familiar with this place than I am. See that ridge up ahead there-

 At any time in the year, could the Earth ever appear in a position

 over the top of it?"

 Alberts followed Hunt's pointing finger, glanced briefly back at

 the Earth, and shook his head decisively behind his facepiece.

 "Never. From the Lunar surface, the position of Earth is almost

 constant. It does wobble about its mean position a bit as a result

 of libration, but not by anything near that much." He looked again.

 "Never anywhere near there. That's an odd question. Why do you

 ask?"

 "Just something that occurred to me. Doesn't really matter for

 now."

 Hunt lowered his eyes and saw an opening at the base of one of the

 walls ahead. "That must be it. Let's carry on up to it."

 The hole was exactly as he remembered from innumerable photographs.

 Despite its age, the shape betrayed its artificial origin. Hunt

 approached almost reverently and paused to finger the rock at one

 side of the opening with his gauntlet. The score marks had

 obviously been made by something like a drill.

 "Well, that's it," came the voice of Alberts, who was standing a

 few feet back. "Charlie's Cave, we call it-more or less exactly as

 it must have been when he and his companion first saw it. Rather

 like treading in the sacred chambers of one of the pyramids, isn't

 it?"

 "That's one way of putting it." Hunt ducked down to peer in-

 side, pausing to fumble for the flashlight at his belt as the

 sudden darkness blinded him temporarily.

 The rockfall that originally had covered th~ body had been cleared,

 and the interior was roomier than he expected. Strange emotions

 welled inside him as he stared at the spot where, millennia before

 the first page of history had been written, a huddled figure had

 painfully scrawled the last page of a story that Hunt had read so

 recently in an office in Houston, a quarter of a million miles

 away. He thought of the time that had passed since those events had

 taken place-of the empires that had grown and fallen, the cities

 that had crumbled to dust, and the lives that had sparkled briefly

 and been swallowed into the past-while all that time, unchanging,

 the secret of these rocks had lain undisturbed. Many minutes passed

 before Hunt reemerged and straightened up in the dazzling sunlight.

 Again he frowned up toward the ridge. Something tantalizing was

 dancing elusively just beyond the fringes of the thinking portions

 of his mind, as if from the subconscious shadows that lay below,

 something insistent was shrieking to be recognized. And then it was

 gone.

 He clipped the flashlight back into position on his belt and walked

 across to rejoin Alberts, who was studying some rock f ormations on

 the opposite wall.

 chapter twenty

  

 The giant ships that would fly on the fifth manned mission to

 Jupiter had been under construction in Lunar orbit for over a year.

 Besides the command ship, six freighters, each capable of carrying

 thirty thousand tons of supplies and equipment, gradually took

 shape high above the surface of the Moon. During the final two

 months before scheduled departure, the floating jumbles of

 machinery, materials, containers, vehicles, tanks, crates, drums,

 and a thousand other items of assorted engineering that hung around

 the ships like enormous Christmas-tree ornaments, were slowly

 absorbed inside. The Vega surface shuttles, deep-space cruisers,

 and other craft also destined for the mission began moving in over

 a period of several weeks to join their respective mother ships. At

 intervals throughout the last week, the freighters lifted out of

 Lunar orbit and set course for Jupiter. By the time its passengers

 and final complement of crew were being ferried up from the Lunar

 surface, only the command ship was left, hanging alone in the void.

 As H hour approached, the gaggle of service craft and attendant

 satellites withdrew and a flock of escorts converged to stand a few

 miles off, cameras transmitting live via Luna into the World News

 Grid.

 As the final minutes ticked by, a million viewscreens showed the

 awesome mile-and-a-quarter-long shape drifting almost imperceptibly

 against the background of stars; the serenity of the spectacle

 seemed somehow to forewarn of the unimaginable power waiting to be

 unleashed. Exactly on schedule, the ifight-control computers

 completed their final-countdown-phase checkout, obtained "Go"

 acknowledgment from the ground control master processor, and

 activated the main thermonuclear drives in a flash that was visible

 from Earth.

 The Jupiter Five Mission was under way.

 For the next fifteen minutes the ship gained speed and altitude

 through successively higher orbits. Then, shrugging off the

 restraining pull of Luna with effortless ease, Jupiter Five soared

 out

 and away to begin overtaking and marshaling together its flock of

 freighters, by this time already strung out across a million miles

 of space. After a while the escorts turned back to~ward Luna, while

 on Earth the news screens showed a steadily diminishing point of

 light, being tracked by the orbiting telescopes. Soon even that had

 vanished, and oniy the long-range radars and laser links were left

 to continue their electronic exchanges across the widening gulf.

 Aboard the command ship, Hunt and the other UNSA scientists watched

 on the wall screen in mess twenty-four as the minutes passed by and

 Luna contracted into a full disk, partly eclipsing that of Earth

 beyond. In the days that followed, the two globes waned and fused

 into a single blob of brilliance, standing out in the heavens to

 signpost the way they had come. As days turned into weeks, even

 this shrank to become just another grain of dust among millions

 until, after about a month, they could pick it out only with

 difficulty.

 Hunt found that it took time to adjust to the idea of living as

 part of a tiny man-made world, with the cosmos stretching away to

 infinity on every side and the distance between them and everything

 that was familiar increasing at more than ten miles every second.

 Now they depended utterly for survival on the skills of those who

 had designed and built the ship. The green hills and blue skies of

 Earth were no longer factors of survival and seemed to shed some of

 their tangible attributes, almost like the aftermath of a dream

 that had seemed real. Hunt came to think of reality as a relative

 quantity-not something absolute that can be left for a while and

 then returned to. The ship became the only reality; it was the

 things left behind that ceased, temporarily, to exist.

 He spent hours in the viewing domes along the outer hull, slowly

 coming to terms with the new dimension being added to his

 existence, gazing out at the only thing left that was familiar: the

 Sun. He found reassurance in the eternal presence of the Sun, with

 its limitless flood of life-giving warmth and light. Hunt thought

 of the first sailors, who had never ventured out of sight of land;

 they too had needed something familiar to cling to. But before

 long, men would turn their prow toward the open gulf and plunge

 into the voids between the galaxies. There would be no Sun to

 reassure them then, and there would be no stars at all; the

 galaxies themselves would be just faint spots, scattered all the

 way to infinity.

 What strange new continents were waiting on the other side of those

 gulfs?

 Danchekker was spending one of his relaxation periods in a

 zero-gravity section of the ship, watching a game of 3-D football

 being played between two teams of off-duty crew members. The game

 was based on American-style football and took place inside an

 enormous sphere of transparent, rubbery plastic. Players hurtled

 up, down, and in all directions, rebounding off the wall and off

 each other in a glorious roughhouse directed-vaguely-at getting the

 ball through two circular goals on opposite sides of the sphere. In

 reality, the whole thing was just an excuse to let off steam and

 flex muscles beginning to go soft during the long, monotonous

 voyage.

 A steward tapped the scientist on the shoulder and informed him

 that a call was waiting in the videobooth outside the recreation

 deck. Danchekker nodded, unclipped the safety loop of his belt from

 the anchor pin attached to the seat, clipped it around the

 handrail, and with a single effortless pull, sent himself floating

 gracefully toward the door. Hunt's face greeted him, speaking from

 a quarter of a mile away.

 "Dr. Hunt," he acknowledged. "Good morning-or whatever it happens

 to be at the present time in this infernal contraption."

 "Hello, Professor," Hunt replied. "I've been having some thoughts

 about the Ganymeans. There are one or two points I could use your

 opinion on; could we meet somewhere for a bite to eat, say inside

 the next half hour or so?"

 "Very well. Where did you have in mind?"

 "Well, I'm on my way to the restaurant in B section right now. I'll

 be there for a while."

 "I'll join you there in a few minutes." Danchekker cut off the

 screen, emerged from the booth, and hauled himself back into the

 corridor and along it to an entrance to one of the transverse

 shafts leading "down" toward the axis of the ship. Using the

 handrails, he sailed some distance toward the center before

 checking himself opposite an exit from the shaft. He emerged

 through a transfer lock into one of the rotating sections, with

 simulated G, at a point near the axis where the speed differential

 was low. He launched

 himself back along another rail and felt himself accelerate gently,

 to land thirty feet away, on his feet, on a part of the structure

 that had suddenly become the floor. Walking normally, he followed

 some signs to the nearest tube access point, pressed the call

 button, and waited about twenty seconds for a capsule to arrive.

 Once inside, he keyed in his destination and within seconds was

 being whisked smoothly through the tube toward E section of the

 ship.

 The permanently open self-service restaurant was about half full.

 The usual clatter of cutlery and dishes poured from the kitchens

 behind the counter at one end, where a trio of UNSA cooks were

 dishing out generous helpings of assorted culinary offerings

 ranging from UNSA eggs and UNSA beans to UNSA chicken legs and UNSA

 steaks. Automatic food dispensers with do-it-yourself microwave

 cookers had been tried on Jupiter Four but hadn't proved popular

 with the crew. So the designers of Jupiter Five had gone back to

 the good old-fashioned methods.

 Carrying their trays, Hunt and Danchekker threaded their way

 between diners, card players, and vociferous debating groups and

 found an empty table against the far wall. They sat down and began

 transferring their plates to the table.

 "So, you've been entertaining some thoughts concerning our Ganymean

 friends," Danchekker commented as he began to butter a roll.

 "Them and the Lunarians," Hunt replied. "In particular, I like your

 idea that the Lunarians evolved on Minerva from terrestrial animal

 species that the Ganymeans imported. It's the only thing that

 accounts acceptably for no traces of any civilization showing up on

 Earth. All these attempts people are making to show it might be

 different don't convince me much at all."

 "I'm very gratified to hear you say so," Danchekker declared. "The

 problem, however, is proving it."

 "Well, that's what I've been thinking about. Maybe we shouldn't

 have to."

 Danchekker looked up and peered inquisitively over his spectacles.

 He looked intrigued. "Really? How, might I ask?"

 "We've got a big problem trying to figure out anything about what

 happened on Minerva because we're fairly sure it doesn't exist any

 more except as a million chunks of geology strewn around the Solar

 System. But the Lunarians didn't have that prob

 lem. They had it in one piece, right under their feet. Also, they

 had progressed to an advanced state of scientific knowledge. Now,

 what must their work have turned up-at least to some extent?"

 A light of comprehension dawned in Danchekker's eyes.

 "Ah!" he exclaimed at once. "I see. If the Ganymean dviiization had

 flourished on Minerva first, then Lunarian scientists would surely

 have deduced as much." He paused, frowned, then added: "But that

 does not get you very far, Dr. Hunt. You are no more able to

 interrogate Lunarian scientific archives than you are to reassemble

 the planet."

 "No, you're right," Hunt agreed. "We don't have any detailed

 Lunarian scientific records-but we do have the microdot library.

 The texts it contains are pretty general in nature, but I couldn't

 help thinking that if the Lunarians discovered an advanced race had

 been there before them, it would be big and exciting news,

 something everybody would know about; you've only got to look at

 the fuss that Charlie has caused on Earth. Perhaps there were

 references through all of their writings that pointed to such a

 knowledge-if we knew how to read them." He paused to swallow a

 mouthful of sausage. "So, one of the things I've been doing over

 the last few weeks is going through everything we've got with a

 fine-tooth comb to see if anything could point to something like

 that. I didn't expect to find firm proof of anything much-just

 enough for us to be able to say with a bit more confidence that we

 think we know what planet we're talking about."

 "And did you find very much?" Danchekker seemed interested.

 "Several things," Hunt replied. "For a start, there are stock

 phrases scattered all through their language that refer to the

 Giants. Phrases like 'As old as the Giants' or 'Back to the year of

 the Giants' . . . like we'd say maybe, 'Back to the year one.' In

 another place there's a passage that begins 'A long time ago, even

 before the time of the Giants' . . . There are lots of things like

 that. When you look at them from this angle, they all suddenly tie

 together." Hunt paused for a second to allow the professor time to

 reflect on these points, then resumed: "Also, there are references

 to the Giants in another context, one that suggests superpowers or

 great knowledge-for example, 'Gifted with the wisdom of the

 Giants.' You see what I mean-these phrases indicate the Lunarians

 felt a race of giant beings-and probably one that was advanced

 technologically-had existed in the distant past."

 Danchekker chewed his food in silence for a while.

 "I don't want to sound overskeptical," he said at last, "but all

 this seems rather speculative. Such references could well be to

 nothing more than mythical creations-similar to our own heroes of

 folklore."

 "That occurred to me, too," Hunt conceded. "But thinking about it,

 I'm not so sure. The Lunarians were the last word in

 pragmatism-they had no time for romanticism, religion, matters of

 the spirit, or anything like that. In the situation they were in,

 the only people who could help them were themselves, and they knew

 it. They couldn't afford the luxury and the delusion of in-venting

 gods, heroes, and Father Christmases to work their problems out for

 them." He shook his head. "I don't believe the Lunarians made up

 any legends about these Giants. That would have been too much out

 of character."

 "Very well," Danchekker agreed, returning to his meal. "The

 Lunarians were aware of the prior existence of the Ganymeans. I

 suspect, however, that you had more than that in mind when you

 called."

 "You're right," Hunt said. "While I was going through the texts, I

 pulled together some other bits and pieces that are more in your

 line."

 "Go on."

 "Well, supposing for the moment that the Ganymeans did ship a whole

 zoo out to Minerva, the Lunarian biologists later on would have had

 a hell of a problem making any sense out of what they found all

 around them, wouldn't they? I mean, with two different groups of

 animals loose about the place, totally unrelated

 -and bearing in mind that they couldn't have known what we know

 about terrestrial species. ."

 "Worse than that, even," Danchekker supplied. "They would have been

 able to trace the native Minervan species all the way back to their

 origins; the imported types, however, would extend back through

 only twenty-five million years or so. Before that, there would have

 been no record of any ancestors from which they could have

 descended."

 "That's precisely one of the things I wanted to ask you," Hunt

 said. He leaned forward and rested his elbows on the table.

 "Suppose you were a Lunarian biologist and knew only the facts he

 would have known. What sort of picture would it have added up to?"

 Danchekker stopped chewing and thought for a long time, his eyes

 staring far beyond where Hunt was sitting. At length he shook his

 head slowly.

 "That is a very diflicult question to answer. In that situation one

 might, I suppose, speculate that the Ganymeans had introduced alien

 species. But on the other hand, that is what a biologist from Earth

 would think; he would be conditioned to expect a continuous fossil

 record stretching back over hundreds of millions of years. A

 Lunarian, without any such conditioning, might not regard the

 absence of a complete record as in any way abnormal. If that was

 part of the accepted way of things in the world in which he had

 grown up. . ."

 Danchekker's voice faded away for a few seconds. "If I were a

 Lunarian," he said suddenly, his voice decisive, "I would explain

 what I saw thus: Life began in the distant past on Minerva, evolved

 through the accepted process of mutation and selection, and

 branched into many diverse forms. About twenty-five million years

 ago, a particularly violent series of mutations occurred in a short

 time, out of which emerged a new family of forms, radically

 different in structure from anything before. This family branched

 to produce its own divergency of species, living alongside the

 older models, and culminating in the emergence of the Lunarians

 themselves. Yes, I would explain the new appearances in that way.

 It's similar to the appearance of insects on Earth-a whole family

 in itself, structurally dissimilar to anything else." He thought it

 over again for a second and then nodded firmly. "Certainly,

 compared to an explanation of that nature, suggestions of forced

 interplanetary migrations would appear very farfetched indeed."

 "I was hoping you'd say something like that." Hunt nodded,

 satisfied. "In fact, that's very much what they appear to have

 believed. It's not specifically stated in anything I've read, but

 odds and ends from different places add up to that. But there's

 something odd about it as well."

 "Oh?"

 "There's a funny word that crops up in a number of places that

 doesn't have a direct English equivalent; it means something

 between 'manlike' and 'man-related.' They used it to describe many

 animal types."

 "Probably the animals descended from the imported types and related

 to themselves," Danchekker suggested.

 "Yes, exactly. But they also used the saute word in a totally

 different context-to mean 'ashore,' 'on land'. . . anything to do

 with dry land. Now, why should a word become synonymous with two

 such different meanings?"

 Danchekker stopped eating again and furrowed his brow.

 "I really can't imagine. Is it important?"

 "Neither could I, and I think it is. I've done a lot of

 cross-checking with Linguistics on this, and it all adds up to a

 very peculiar thing: 'Manlike' and 'dry-land' became synonymous on

 Minerva because they did in fact mean the same thing. All the land

 animals on Minerva were new models. We coined the word terrestoid

 to describe them in English."

 "A ii of them? You mean that by Charlie's time there were none of

 the original Minervan species left at all?" Danchekker sounded

 amazed.

 "That's what we think-not on land, anyway. There was a full fossil

 record of plenty of types all the way up to, and including the

 Ganymeans, but nothing after that-just terrestoids."

 "And in the sea?"

 "That was different. The old Minervan types continued right

 through-hence your fish."

 Danchekker gazed at Hunt with an expression that almost betrayed

 open disbelief.

 "How extraordinary!" he exclaimed.

 The professor's arm had suddenly become paralyzed and was holding a

 fork in midair with half a roast potato impaled on the end. "You

 mean that all the native Minervan land life disappeared

 -just like that?"

 "Well, during a fairly short time, anyway. We've been asking for a

 long time what happened to the Ganymeans. Now it looks more as if

 the question should be phrased in even broader terms:

 What happened to the Ganymeans and all their land-dwelling

 relatives?"

 chapter twenty-one

  

 For weeks the two scientists debated the mystery of the abrupt

 disappearance of the native Minervan land dwellers. They ruled out

 physical catastrophe on the assumption that anything of that kind

 would have destroyed the terrestoid types as well. The same

 conclusion applied to climatic cataclysm.

 For a while they considered the possibility of an epidemic caused

 by microorganisms imported with the immigrant animals, one against

 which the native species enjoyed no inherited, in-built immunity.

 In the end they dismissed this idea as unlikely on two counts;

 first, an epidemic sufficiently virulent in its effects to wipe out

 each and every species of what must have numbered millions, was

 hard to imagine; second, all information received so far from

 Ganymede suggested that the Ganymeans had been considerably farther

 ahead in technical knowledge than either the Lunarians or

 mankind-surely they could never have made such a blunder.

 A variation on this theme supposed that germ warfare had broken

 out, escalated, and got out of control. Both the previous

 objections carried less weight when viewed in this context; in the

 end, this explanation was accepted as possible. That left only one

 other possibility: some kind of chemical change in the Minervan

 atmosphere to which the native species hadn't been capable of

 adapting but the terrestoids had. But what?

 While the pros and cons of these alternatives were still being

 evaluated on Jupiter Five, the laser link to Earth brought details

 of a new row that had broken out in Navcomms. A faction of Pure

 Earthists had produced calculations showing that the Lunarians

 could never have survived on Minerva at all, let alone flourished

 there; at that distance from the Sun it would simply have been too

 cold. They also insisted that water could never have existed on the

 surface in a liquid state and held this fact as proof that wherever

 the world shown on Charlie's maps had been, it couldn't have been

 anywhere near the Asteroids.

 Against this attack the various camps of Minerva-ists concluded

 a hasty alliance and opened counterfire with calculations of their

 own, which invoked the greenhouse effect of atmospheric carbon

 dioxide to show that a substantially higher temperature could have

 been sustained. They demonstrated further that the percentage of

 carbon dioxide required to produce the mean temperature that they

 had already estimated by other means, was precisely the figure

 arrived at by Professor Schorn in his deduction of the composition

 of the Minervan atmosphere from an analysis of Charlie's cell

 metabolism and respiratory system. The land mine that finally

 demolished the Pure Earthist position was Schom's later

 pronouncement that Charlie exhibited several physiological signs

 implying adaptation to an abnormally high level of carbon dioxide.

 Their curiosity stimulated by all this sudden interest in the

 amount of carbon dioxide in the Minervan atmosphere, Hunt and

 Danchekker devised a separate experiment of their own. Combining

 Hunt's mathematical skill with Danchekker's knowledge of

 quantitative molecular biology, they developed a computer model of

 generalized Minervan microchemical behavior potentials, based on

 data derived from the native fish. It took them over three months

 to perfect. Then they applied to the model a series of mathematical

 operators that simulated the effects of different chemical agents

 in the environment. When he viewed the results on the screen in one

 of the console rooms Danchekker's conclusion was quite definite:

 "Any air-breathing life form that evolved from the same primitive

 ancestors as this fish and inherited the same fundamental system of

 microchemistry, would be extremely susceptible to a family of

 toxins that includes carbon dioxide-far more so than the majority

 of terrestrial species."

 For once, everything added up. About twenty-five million years ago,

 the concentration of carbon dioxide in the atmosphere of Minerva

 apparently increased suddenly, possibly through some natural cause

 that had liberated the gas from chemical combination in rocks, or

 possibly as a result of something the Ganymeans had done. This

 could also explain why the Ganymeans had brought in all the

 animals. Perhaps their prime objective had been to redress the

 balance by covering the planet with carbon-dioxideabsorbing,

 oxygen-producing terrestrial green plants; the animals had been

 included simply to preserve a balanced ecology in which the plants

 could survive. The attempt failed. The native life succumbed, and

 the more highly resistant immigrants flourished and

 spread out over a whole new world denuded of alien competition.

 Nobody knew for sure that it had been so on Minerva. Possibly

 nobody ever would.

 And nobody knew what had become of the Ganymeans. Perhaps they had

 perished along with their cousins. Perhaps, when their efforts

 proved futile, they had abandoned Minerva to its new inhabitants

 and left the Solar System completely to find a new home elsewhere.

 Hunt hoped so. For some strange reason he had developed an

 inexplicable affection for this mysterious race. In one of the

 Lunarian texts he had come across a verse that began: "Far away

 among the stars, where the Giants of old now live. . ." He hoped it

 was true.

 And so, quite suddenly, at least one chapter in the early history

 of Minerva had been cleared up. Everything now pointed to the

 Lunarians and their civilization as having developed on Minerva and

 not on Earth. It explained the failure of Schorn's early attempt to

 fix the length of the day in Hunt's calendar by calculating

 Charlie's natural periods of sleep and wakefulness. The ancestors

 of the Lunarians had arrived from Earth carrying a deeply rooted

 metabolic rhythm evolved around a twenty-four-hour cycle. During

 the twenty-five million years that followed, some of the more

 flexible biological processes in their descendants adapted

 successfully to the thirty-five-hour day of Minerva, while others

 changed only partially. By Charlie's time, all the Lunarians'

 physiological clocks had gotten hopelessly out of synchronization;

 no wonder Schorn's results made no sense. But the puzzling numbers

 in Charlie's notebook still remained to be accounted for.

 In Houston, Caldwell read Hunt and Danchekker's joint report with

 deep satisfaction. He had realized long before that to achieve

 results, the abilities of the two scientists would have to be

 combined and focused on the problem at hand instead of being

 dissipated fruitlessly in the friction of personal incompatibility.

 How could he manipulate into being a situation in which the things

 they had in common outweighed their differences? Well, what did

 they have in common? Starting with the simplest and most obvious

 thing-they were both human beings from planet Earth. So where would

 this fundamental truth come to totally overshadow anything else?

 Where but on the barren wastes of the Moon or a hundred

 million miles out in the emptiness of space? Everything seemed to

 be working out better than he had dared hope.

 "It's like I always said," Lyn Garland stated coyly when Hunt's

 assistant showed her a copy of the report. "Gregg's a genius with

 people."

 The arrival in Ganymede orbit of the seven ships from Earth was a

 big moment for the Jupiter Four veterans, especially those whose

 tour of duty was approaching an end and who could now look forward

 to going home soon. In the weeks to come, as the complex program of

 maneuvering supplies and equipment between the ships and the

 surface installations unfolded, the scene above Ganymede would

 become as chaotic as that above Luna had been during departure

 preparations. The two command ships would remain standing off ten

 miles apart for the next two months. Then Jupiter Four, accompanied

 by two of the recently arrived freighters, would move out to take

 up station over Callisto and begin expanding the pilot base already

 set up there. Jupiter Five would remain at Ganymede until joined by

 Saturn Two, which was at that time undergoing final countdown for

 Lunar lift-out and due to arrive in five months. After rendezvous

 above Ganymede, one of the two ships (exactly which was yet to be

 decided) would set course for the ringed planet, on the farthest

 large-scale manned probe yet attempted.

 The long-haul sailing days of Jupiter Four were over. Too slow by

 the standards of the latest designs, it would probably be stripped

 down to become a permanent orbiting base over Callisto. After a few

 years it would suffer the ignoble end of being dismantled and

 cannibalized for surface constructions.

 With all the hustle and traffic congestion that erupted in the

 skies over Ganymede, it was three days before the time came for the

 group of UNSA scientists to be ferried to the surface. After months

 of getting used to the pattern of life and the company aboard the

 ship, Hunt felt a twinge of nostalgia as he packed his belongings

 in his cabin and stood in line waiting to board the Vega moored

 alongside in the cavernous midships docking bay. It was probably

 the last he would see of the inside of this immense city of metal

 alloys; when he returned to Earth, it would be aboard one of the

 small, fast cruisers ferried out with the mission.

 An hour later Jupiter Five, festooned in a web of astronautic

 engineering, was shrinking rapidly on the cabin display in the

 Vega. Then the picture changed suddenly and the sinister frosty

 countenance of Ganymede came swelling up toward them.

 Hunt sat on the edge of his bunk inside a Spartan room in

 number-three barrack block of Ganymede Main Base and methodically

 transferred the contents of his kit bag into the aluminum locker

 beside him. The air-extractor grill above the door was noisy. The

 air drawn in through the vents set into the lower walls was warm,

 and tainted with the smell of engine oil. The steel floor plates

 vibrated to the hum of heavy machinery somewhere below. Propped up

 against a pillow on the bunk opposite, Danchekker was browsing

 through a folder full of facsimiled notes and color illustrations

 and chattering excitedly like a schoolboy on Christmas Eve.

 "Just think of it, Vic, another day and we'll be there. Animals

 that actually walked the Earth twenty-five million years ago! Any

 biologist would give his right arm for an experience like this." He

 held up the folder. "Look at that. I do believe it to be a

 perfectly preserved example of Trilophodon-a four-tusked Miocene

 mammoth over fifteen feet high. Can you imagine anything more

 exciting than that?"

 Hunt scowled sourly across the room at the collection of pin-ups

 adorning the far wall, bequeathed by an earlier UNSA occupant

 "Frankly, yes," he muttered. "But equipped rather differently than

 a bloody Trilophodon."

 "Eh? What's that you said?" Danchekker blinked uncomprehendingly

 through his spectacles. Hunt reached for his cigarette case.

 "It doesn't matter, Chris," he sighed.

 chapter twenty-two

  

 The flight northward to Pithead lasted just under two hours. On

 arrival, the group from Earth assembled in the officers' mess of

 the control building for coffee, during which scientists from

 Jupiter Four updated them on Ganymean matters.

 The Ganymean ship had almost certainly been destined for a

 large-scale, long-range voyage and not for anything like a limited

 exploratory expedition. Several hundred Ganymeans had died with

 their ship. The quantity and variety of stores, materials,

 equipment, and livestock that they had taken with them indicated

 that wherever they had been bound, they had meant to stay.

 Everything about the ship, especially its instrumentation and

 control systems, revealed a very advanced stage of scientific

 knowledge. Most of the electronics were still a mystery, and some

 of the special-purpose components were unlike anything the UNSA

 engineers had ever seen. Ganymean computers were built using a

 mass-integration technology in which millions of components were

 diffused, layer upon layer, into a single monolithic silicon block.

 The heat dissipated inside was removed by electronic cooling

 networks interwoven with the functional circuitry. In some

 examples, believed to form parts of the navigation system,

 component packing densities approached that of the human brain. A

 physicist held up a slab of what appeared to be silicon, about the

 size of a large dictionary; in terms of raw processing power, he

 claimed, it was capable of outperforming all the computers in the

 Navcomms Headquarters building put together.

 The ship was streamlined and strongly constructed, indicating that

 it was designed to fly through atmospheres and to land on a planet

 without collapsing under its own weight. Ganymean engineering

 appeared to have reached a level where the functions of a Vega and

 a deep-space interorbital transporter were combined in one vessel.

 The propulsion system was revolutionary. There were no large

 exhaust apertures and no obvious reaction points to suggest that

 the ship had been kicked forward by any kind of thermodynamic or

 photonic external thrust. The main fuel-storages system fed a

 succession of convertors and generators designed to deliver

 enormous amounts of electrical and magnetic energy. This supplied a

 series of two-foot-square superconducting busbars and a maze of

 interleaved windings, fabricated from solid copper bars, that

 surrounded what appeared to be the main-drive engines. Nobody was

 sure precisely how this arrangement resulted in motion of the ship,

 although some of the theories were startling.

 Could this have been a true starship? Had the Ganymeans left en

 masse in an interstellar exodus? Had this particular ship foundered

 on its way out of the Solar System, shortly after leaving Minerva?

 These questions and a thousand more remained to be answered. One

 thing was certain, though: If the discovery of Charlie had given

 two years' work to a significant proportion of Navcomms, there was

 enough information here to keep half the scientific world occupied

 for decades, if not centuries.

 The party spent some hours in the recently erected laboratory dome,

 inspecting items brought up from below the ice, including several

 Ganymean skeletons and a score of terrestrial animals. To

 Danchekker's disappointment, his particular favorite-the man-ape

 anthropoid he had shown to Hunt and Caidwell many months before on

 a viewscreen in Houston-was not among them. "Cyril" had been

 transferred to the laboratories of the Jupiter Four command ship

 for detailed examination. The name, graciously bestowed by the UNSA

 biologists, was in honor of the mission's chief scientist.

 After lunch in the base canteen, they walked into the dome that

 covered one of the shaftheads. Fifteen minutes later they were

 standing deep below the surface of the ice field, gazing in awe at

 the ship itself.

 It lay, fully uncovered, in the vast white floodlighted cavern, its

 underside still supported in its mold of ice. The hull cut a clean

 swath through the forest of massive steel jacks and ice pillars

 that carried the weight of the roof. Beneath the framework of ramps

 and scaffolding that clung to its side, whole sections of the hull

 had been removed to reveal the compartments inside. The floor all

 around was littered with pieces of machinery lifted out by overhead

 cranes. The scene reminded Hunt of the time he and Borlan had

 visited Boeing's huge plant near Seattle where they assembled

 the 1017 skyliners-but everything here was on a far vaster scale.

 They toured the network of catwalks and ladders that had been

 laid throughout the ship, from the command 'deck with its

 fifteen-foot-wide display screen, through the control rooms, living

 quarters, and hospital, to the cargo holds and the tiers of cages

 that had contained the animals. The primary energy-convertor and

 generator section was as imposing and as complex as the inside of a

 thermonuclear power station. Beyond it, they passed through a

 bulkhead and found themselves dwarfed beneath the curves of the

 exposed portions of a pair of enormous toroids. The engineer

 leading them pointed up at the immense, sweeping surfaces of metal.

 "The walls of those outer casings are sixteen feet thick," he

 in-formed them. "They're made from an alloy that would cut

 tungsten-carbide steel like cream cheese. The mass concentration

 inside them is phenomenal. We think they provided closed paths in

 which masses of highly concentrated matter were constrained in

 circulating or oscillating resonance, interacting with strong

 fields. It's possible that the high rates of change of gravity

 potential that this produced were somehow harnessed to induce a

 controlled distortion in the space around the ship. In other words,

 it moved by continuously falling into a hole that it created in

 front of itself- kind of like a four-dimensional tank track."

 "You mean it trapped itself inside a space-time bubble, which

 propagated somehow through normal space?" somebody offered.

 "Yes, if you like," the engineer affirmed. "I guess a bubble is as

 good an analogy as any. The interesting point is, if it did work

 that way, every particle of the ship and everything inside it would

 be subjected to exactly the same acceleration. Therefore there

 would be no G effect. You could stop the ship dead from, say, a

 million miles an hour to zero in a millisecond, and nobody inside

 would even know the difference."

 "How about top speed?" someone else asked. 'Would there have been a

 relativistic limit?"

 "We don't know. The theory boys up in Jupiter Four have been losing

 a lot of sleep over that. Conventional mechanics wouldn't apply to

 any movement of the ship itself, since it wouldn't be actually

 moving in the local space inside the bubble. The question of how

 the bubble propagates through normal space is a different ball game

 altogether. A whole new theory of fields has to be

 worked out. Maybe completely new laws of physics apply-as I said

 before, we just don't know. But one thing seems clear: Those

 photon-drive starships they're designing in California might turn

 out to be obsolete before they're even built. If we can figure out

 enough about how this ship worked, the knowledge could put us

 forward a hundred years."

 By the end of the day Hunt's mind was in a whirl. New information

 was coming in faster than he could digest it. The questions in his

 head were multiplying at a rate a thousand times faster than they

 could ever be answered. The riddle of the Ganymean spaceship grew

 more intriguing with every new revelation, but at the back of it

 there was still the Lunarian problem unresolved. He needed time to

 stand back and think, to put his mental house in order and sort the

 jumble into related thoughts that would slot into labeled boxes in

 his mind. Then he would be able to see better which question

 depended on what, and which needed to be tackled first. But the

 jumble was piling up faster than he could pick up the pieces.

 The banter and laughter in the mess after the evening meal soon

 became intolerable. Alone in his room, he found the walls

 claustrophobic. For a while he walked the deserted corridors

 between the domes and buildings. They were oppressive; he had lived

 in metal cans for too long. Eventually he found himself in the

 control tower dome, staring out into the incandescent gray wall

 that was produced by the floodlights around the base soaking

 through the methane-ammonia fog of the Ganymedean night. After a

 while even the presence of the duty controller, his face etched out

 against the darkness by the glow from his console, became an

 intrusion. Hunt stopped by the console on his way to the stairwell.

 "Check me out for surface access."

 The duty controller looked across at him. "You're going outside?"

 "I need some air."

 The controller brought one of his screens to life. "You are who,

 please?"

 "Hunt. Dr. V. Hunt."

 "ID?"

 "730289 C/EX4."

 The controller logged the details, then checked the time and keyed

 it in.

 "Report in by radio in one hour's time if you're not back. Keep a

 receiver channel open permanently on 24.328 megahertz."

 "Will do," Hunt acknowledged. "Good night."

 "Night."

 The controller watched Hunt disappear toward the floor below,

 shrugged to himself, and automatically scanned the displays in

 front of him. It was going to be a quiet night.

 In the surface access anteroom on the ground level, Hunt selected a

 suit from the row of lockers along the right hand wall. A few

 minutes later, suited up and with his helmet secured, he walked to

 the airlock, keyed his name and ID code into the terminal by the

 gate, and waited a couple of seconds for the inner door to slide

 open.

 He emerged into the swirling silver mist and turned right to follow

 the line of the looming black metal cliff of the control building.

 The crunch of his boots in the powder ice sounded faint and far

 away, through the thin vapors. Where the wall ended he continued

 walking slowly in a straight line, out into the open area and

 toward the edge of the base. Phantom shapes of steel emerged and

 disappeared in the silent shadows around him. The gloom ahead grew

 darker as islands of diffuse light passed by on either side. The

 ice began sloping upward. Irregular patches of naked, upthrusting

 rock became more frequent. He walked on as if in a trance.

 Pictures from the past rolled by before his mind's eye: a boy,

 reading books, shut away in the upstairs bedroom of a London slum .

 . . a youth, pedaling a bicycle each morning through the narrow

 streets of Cambridge. The people he had been were no more real than

 the people he would become. All through his life he had been moving

 on, never standing still, always in the process of changing from

 something he had been to something he would be. And beyond every

 new world, another beckoned. And always the faces around him were

 unfamiliar ones-they drifted into his life like the transient

 shadows of the rocks that now moved toward him from the mists

 ahead. Like the rocks, for a while the people seemed to exist and

 take on form and substance, before slipping by to dissolve into the

 shrouds of the past behind him, as if they

 had never been. Forsyth-Scott, Felix Borlan, and Rob Gray had

 already ceased to exist. Would Caidwell, Danchekker, and the rest

 soon fade away to join them? And what new figures would materialize

 out of the unknown worlds lying hidden behind the veils of time

 ahead?

 He realized with some surprise that the mists around him were

 getting brighter again; also, he could suddenly see farther. He was

 climbing upward across an immense ice field, now smooth and devoid

 of rocks. The light was an eerie glow, permeating evenly through

 mists on every side as if the fog itself were luminous. He climbed

 higher. With every step the horizon of his vision broadened

 further, and the luminosity drained from the surrounding mist to

 concentrate itself in a single patch that second by second grew

 brighter above his head. And then he was looking out over the top

 of the fog bank. It was just a pocket, trapped in the depression of

 the vast basin in which the base had been built; it had no doubt

 been sited there to shorten the length of the shaft needed to reach

 the Ganymean ship. The slope above him finished in a long, rounded

 ridge not fifty feet beyond where he stood. He changed direction

 slightly to take the steeper incline that led directly to the

 summit of the ridge. The last tenuous wisps of whiteness fell away.

 At the top, the night was clear as crystal. He was standing on a

 beach of ice that shelved down from his feet into a lake of cotton

 wool. On the opposite shore of the lake rose the summits of the

 rock buttresses and ice cliffs that stood beyond the base. For

 miles around, ghostly white bergs of Ganymedean ice floated on an

 ocean of cloud, shining against the blackness of the night.

 But there was no Sun.

 He raised his eyes, and gasped involuntarily. Above him, five times

 larger than the Moon seen from Earth, was the full disk of Jupiter.

 No photograph he had ever seen, or any image reproduced on a

 display screen, could compare with the grandeur of that sight. It

 filled the sky with its radiance. All the colors of the rainbow

 were woven into its iridescent bands of light, stacked layer upon

 layer outwards from its equator. They faded as they approached its

 edge and merged into a hazy circle of pink that encircled the

 planet. The pink turned to violet and finally to purple, ending in

 a clear, sharp outline that traced an enormous circle against the

 sky. Immutable, immovable, eternal. . . mightiest of

 the gods-and tiny, puny, ephemeral man had crawled on a pilgrimage

 of five hundred million miles to pay homage.

 Maybe only seconds passed, maybe hours. H~tht could not tell. For a

 fraction of eternity he stood unmoving, a speck lost among the

 silent towers of rock and ice. Charlie too had stood upon the

 surface of a barren waste and gazed up at a world wreathed in light

 and color-but the colors had been those of death.

 At that moment, the scenes that Charlie had seen came to Hunt more

 vividly than at any time before. He saw cities consumed by

 fireballs ten miles high; he saw gaping chasms, seared and

 blackened ash that had once held oceans, and lakes of fire where

 mountains had stood. He saw continents buckle and break asunder,

 and drown beneath a fury of white heat that came exploding outward

 from below. As clearly as if it were really happening, he saw the

 huge globe above him swelling and bursting, grotesque with the

 deceptive slowness of mighty events seen from great distances. Day

 by day it would rush outward into space, consuming its moons one

 after the other in an insatiable orgy of gluttony until its force

 was spent. And then.

 Hunt snapped back to reality with a jolt.

 Suddenly the answer he had been seeking was there. It had come out

 of nowhere. He tried to trace its root by backtracking through his

 thoughts-but there was nothing. The pathways up from the deeper

 levels of his mind had opened for a second, but now were closed.

 The illusion was exposed. The paradox had gone. Of course nobody

 had seen it before. Who would think to question a truth that was

 self-evident, and older than the human race itself?

 "Pithead Control calling Dr. V. Hunt. Dr. Hunt, come in, please."

 The sudden voice in his helmet startled him. He pressed a button in

 the control panel on his chest.

 "Hunt answering," he acknowledged. "I hear you."

 "Routine check. You're five minutes overdue to report. Is

 everything okay?"

 "Sorry, didn't notice the time. Yes, everything's okay. . . very

 okay. I'm coming back now."

 "Thank you." The voice cut off with a click.

 Had he been gone that long? He realized that he was cold. The icy

 fingers of the Ganymedean night were beginning to feel their way

 inside his suit. He wound his heating control up a turn and

 flexed his arms. Before he turned, he looked up once more for a

 final glimpse of the giant planet. For some strange reason it

 seemed to be smiling.

 "Thanks, pal," he murmured with a wink. "Maybe P11 be able to do

 something for you someday."

 With that he began moving down from the ridge, and rapidly faded

 into the sea of cloud.

 chapter twenty-three

  

 A group of about thirty people, mainly scientists, engineers, and

 UNSA executives, filed into the conference theater in the Naycomms

 Headquarters building. The room was arranged in ascending tiers of

 seats that faced a large blank screen at the far end from the

 double doors. Caldwell was standing on a raised platform in front

 of the screen, watching as the various groups and individuals found

 seats. Soon everybody was settled and an usher at the rear signaled

 that the corridor outside was empty. Caidwell nodded in

 acknowledgment, raised his hand for silence, and stepped a pace

 forward to the microphone in front of him.

 "Your attention, please, ladies and gentlemen . . . Could we have

 quiet, please . . ." The baritone voice boomed out of the

 loudspeakers around the walls. The murmurs subsided.

 "Thank you all for coming on such short notice," he resumed. "All

 of you have been engaged for some time now in some aspect or other

 of the Lunarian problem. Ever since this thing first started, there

 have been more than a few arguments and differences of opinion, as

 you all know. Taking all things into consideration, however, we

 haven't done too badly. We started out with a body and a few scraps

 of paper, and from them we reconstructed a whole world. But there

 are still some fundamental questions that have remained unanswered

 right up to this day. I'm sure there's no need for me to recap them

 for the benefit of anyone here." He paused. "At last, it appears,

 we may have answers to those questions. The new developments that

 cause me to say this are so unexpected that I feel it appropriate

 to call you all together to let you see for yourselves what I saw

 for the first time only a few hours ago." He waited again and

 allowed the mood of the gathering to move from one suited to

 preliminary remarks to something more in tune with the serious

 business about to begin.

 "As you all know, a group of scientists left us many months ago

 with the Jupiter Five Mission to investigate the discoveries on

 Ganymede. Among that group was Vic Hunt. This morning we re

 ceived his latest report on what's going on. We are about to replay

 the recording for you now. I think you will find it interesting."

 Caldwell glanced toward the projection window at the back of the

 room and raised his hand. The lights began to fade. He stepped down

 from the platform and took his seat in the front row. Darkness

 reigned briefly. Then the screen illuminated to show a file header

 and reference frame in standard UNSA format. The header persisted

 for a few seconds, then disappeared to be replaced by the image of

 Hunt, facing the camera across a desktop.

 "Navcomms Special Investigation to Ganymede, V. Hunt reporting, 20

 November 2029, Earth Standard Time," he announced. "Subject of

 transmission: A Hypothesis Concerning Lunarian Origins. What

 follows is not claimed to be rigorously proven theory at this

 stage. The object is to present an account of a possible sequence

 of events which, for the first time, explains adequately the

 origins of the Lunarians, and is also consistent with all the facts

 currently in our possession." Hunt paused to consult some notes on

 the desk before him. In the conference theater the silence was

 absolute.

 Hunt looked back up and out of the screen. "Up until now I've

 tended not to accent any particular one of the ideas in circulation

 in preference to the rest, primarily because I haven't been

 sufficiently convinced that any of them, as stated, accounted

 adequately for everything that we had reason to believe was true.

 That situation has changed. I have now come to believe that one

 explanation exists which is capable of supporting all the evidence.

 That explanation is as follows:

 "The Solar System was formed originally with nine planets, which

 included Minerva and extended out as far as Neptune. Akin to the

 inner planets and located beyond Mars, Minerva resembled Earth in

 many ways. It was similar in size and density and was composed of a

 mix of similar elements. It cooled and developed an atmosphere, a

 hydrosphere, and a surface composition." Hunt paused for a second.

 "This has been one source of difficulty- reconciling surface

 conditions at this distance from the Sun with the existence of life

 as we know it. For proof that these factors can indeed be

 reconciled, refer to Professor Fuller's work at London University

 during the last few months." A caption appeared on the lower

 portion of the screen, giving details of the titles and access

 codes of Fuller's papers on the subject

 "Briefly, Fuller has produced a model of the equilibrium states of

 various atmospheric gases and volcanically introduced water vapor,

 that is consistent with known data. To s'ustain the levels of free

 atmospheric carbon dioxide and water vapor, and the existence of

 large amounts of water in a liquid state, the model requires a very

 high level of volcanic activity on the planet, at least in its

 earlier history. That this requirement was evidently met could

 suggest that relative to its size, the crust of Minerva was

 exceptionally thin, and the structure of this crust unstable. This

 is significant, as becomes clear later. Fuller's model also ties in

 with the latest information from the Asteroid surveys. The thin

 crust could be the result of relatively rapid surface cooling

 caused by the vast distance from the Sun, but with the internal

 molten condition being prolonged by heat sources below the surface.

 The Asteroid missions report many samples being tested that are

 rich in radioactive heat-producing substances.

 "So, Minerva cooled to a mean surface temperature somewhat colder

 than Earth's but not as cold as you might think. With cooling came

 the formation of increasingly more complex molecules, and

 eventually life emerged. With life came diversification, followed

 by competition, followed by selection-in other words, evolution.

 After many millions of years, evolution culminated in a race of

 intelligent beings who became dominant on the planet These were the

 beings we have christened the Ganymeans.

 "The Ganymeans developed an advanced technological civilization.

 Then, approximately twenty-five million years ago, they had reached

 a stage which we estimate to be about a hundred years ahead of our

 own. This estimate is based on the design of the Ganymean ship

 we've been looking at here, and the equipment found inside it.

 "Some time around this period, a major crisis developed on Minerva.

 Something upset the delicate mechanism controlling the balance

 between the amount of carbon dioxide locked up in the rocks and

 that in the free state; the amount in the atmosphere began to rise.

 The reasons for this are speculative. One possibility is that

 something triggered the tendency toward high volcanic activity

 inherent in Minerva's structure-maybe natural causes, maybe

 something the Ganymeans did. Another possibility is that the

 Ganymeans were attempting an ambitious program of climate control

 and the whole thing went wrong in a big way. At present we

 really don't have a good answer to this part. However, our

 investigations of the Ganymeans have hardly begun yet. There are

 still years of work to be done on the contents of the ship alone,

 and I'm pretty certain that there's a lot more waiting to be

 discovered down under the ice here.

 "Anyhow, the main point for the present is that something happened.

 Chris Danchekker has shown . . ." Another file reference appeared

 on the bottom of the screen. ". . . that all the higher,

 air-breathing Minervan life forms would almost certainly have

 possessed a very low tolerance to increases in carbon-dioxide

 concentration. This derives from the fundamental system of

 microchemistry inherited from the earliest ancestors of the line.

 This implies, of course, that the changing surface conditions on

 Minerva posed a threat to the very existence of most forms of land

 life, including the Ganymeans. If we accept this situation, we also

 have a plausible reason for supposing that the Ganymeans went

 through a phase of importing on a vast scale a mixed balance of

 plant and animal life from Earth. Perhaps, stuck out where it was,

 Minerva had nothing to compare with the quantity and variety of

 life teeming on the much warmer planet Earth.

 "Evidently, the experiment didn't work. Although the imported stock

 found conditions favorable enough to flourish in, they failed to

 produce the desired result. From various bits of information, we

 believe the Ganymeans gave the whole thing up as a bad job and

 moved out to find a new home somewhere outside the Solar System.

 Whether or not they succeeded we don't know; maybe further study of

 what's in the ship will throw more light on that question."

 Hunt stopped to pick up a case from the desk and went through the

 motions of lighting a cigarette. The break seemed to be timed to

 give the viewers a chance to digest this part of his narrative. A

 subdued chorus of mutterings broke out around the room. Here and

 there a light flared as individuals succumbed to the suggestion

 from the screen. Hunt continued:

 "The native Minervan land species left on the planet soon died out.

 But the immigrant types from Earth enjoyed a better adaptability

 and survived. Not only that, they were free to roam unchecked and

 unhindered across the length and breadth of Minerva, where any

 native competition rapidly ceased to exist. The new arrivals were

 thus free to continue the process of evolutionary

 development that had begun millions of years before in the oceans

 of Earth. But at the same time, of course, the same process was

 also continuing on Earth itself. Two groups of animal species,

 possessing the same genetic inheritance from common ancestors and

 equipped with the same evolutionary potential, were developing in

 isolation on two different worlds.

 "Now, for those of you who have not yet had the pleasure, allow me

 to introduce Cyril." The picture of Hunt vanished and a view of the

 man-ape retrieved from the Ganymean ship appeared.

 Hunt's voice carried on with the commentary: "Chris's team has made

 a thorough examination of this character in the Jupiter Four

 laboraties. Chris's own summary of their results was, quote:

 'We consider this to be something nearer the direct line of descent

 toward modern man than anything previously studied. Many fossil

 finds have been made on Earth of creatures that represented various

 branches of development from the early progressive apes in the

 general direction of man. All finds to date, however, have been

 classed as belonging to offshoots from the main stream; a specimen

 of a direct link in the chain leading to Homo sapiens has always

 persistently eluded us. Here, we have such a link.' Unquote." The

 image of Hunt reappeared. "We can be fairly sure, therefore, that

 among the terrestrial life forms left to develop on Minerva were

 numbers of primates as far advanced in their evolution as anything

 back on Earth.

 "The faster evolution characteristic of Minerva thus far, was

 repeated, possibly as a result of the harsher environment and

 climate. Millions of years passed. On Earth a succession of manlike

 beings came and went, some progressive, some degenerate. The Ice

 Age came and moved through into its final, glacial phase some fifty

 thousand years ago. By this time on Earth, primitive humanoids

 represented the apex of progress-crude cave dwellers, hunters,

 makers of simple weapons and tools chipped out of stone. But on

 Minerva, a new technological civilization already existed:

 the Lunarians-descended from the imported stock and from the same

 early ancestors as ourselves, human in every detail of anatomy.

 "I won't dwell on the problems that confronted the developing

 Lunarian civilization-they're well-known by now. Their history was

 one long story of war and hardship enacted around a racial quest to

 escape from their dying world. Their difficulties were

 compounded by a chronic shortage of minerals, possibly because the

 planet was naturally deficient, or possibly because it had been

 thoroughly exploited by the Ganymeans. At any rate, the warring

 factions polarized into two superpowers, and in the showdown that

 followed they destroyed themselves and the planet."

 Hunt paused again at this point to allow another period of

 consolidation for the audience. This time, however, there was

 complete silence. Nothing he had said so far was new, but he had

 formed a set selected from the thousand and one theories and

 speculations that had raged around Navcomms for as long as many

 could remember. The silent watchers in the theater sensed that the

 real news was still to come.

 "Let's stop for a moment and examine how well this account fits in

 with the evidence we have. First, the original problem of Charlie's

 human form. Well, that's answered: He was human- descended from the

 same ancestors as the rest of us and requiring nothing as unlikely

 as a parallel line to explain him. Second, the absence of any signs

 of the Lunarians on Earth. Well, the reason is quite obvious: They

 never were on Earth. Third, all the attempts to reconcile the

 surface geography of Charlie's world with Earth become unnecessary,

 since by this account they were indeed two different planets.

 "So far so good, then. This by itself, however, does not explain

 all the facts. There are some additional pieces of evidence which

 must be taken into account by any theory that claims to be

 comprehensive. They can be summarized in the following questions:

 "One: How could Charlie's voyage from Minerva to our Moon have

 taken only two days?

 "Two: How do we explain a weapons system, consistent with the

 Lunarian level of technology, that was capable of accurate

 registration over a range extending from our Moon to Minerva?

 "Three: How could the loop feedback delay in the fire-control

 system have been substantially less than the minimum of twenty-six

 minutes that could have applied over that distance?

 "Four: How could Charlie distinguish surface features of Minerva

 when he was standing on our Moon?"

 Hunt looked out from the screen and allowed plenty of time for the

 audience to reflect on these questions. He stubbed out his

 cigarette and leaned forward toward the camera, his elbows corning

 to rest on the desk.

 "There is, in my submission, only one explanation which is capable

 of satisfying these apparently nonsensical requirements. And I put

 it to you now. The moon that orbited Minerv~a from time immemorial

 up until the time of these events fifty thousand years ago

 -and the Moon that shines in the sky above Earth today-are one and

 the same!"

 Nothing happened for about three seconds.

 Then gasps of incredulity erupted from around the darkened room.

 People gesticulated at their neighbors while some turned

 imploringly for comment from the row behind. Suddenly the whole

 theater was a turmoil of muttered exchanges.

 "Can't be!"

 "By God-he's right!"

 "Of course. . . of course. . .

 "Has to be. . ."

 "Garbage!"

 On the screen Hunt stared out impassively, as if he were watching

 the scene. His allowance for the probable reaction was well timed.

 He resumed speaking just as the confusion of voices was dying away.

 "We know that the moon Charlie was on was our Moon- because we

 found him there, because we can identify the areas of terrain he

 described, because we have ample evidence of a large-scale Lunarian

 presence there, and because we have proved that it was the scene of

 a violent exchange of nucleonic and nuclear weapons. But that same

 place must also have been the satellite of Minerva. It was only a

 two-day flight from the planet-Charlie says so and we're confident

 we can interpret his time scale. Weapons were sited there which

 could pick off targets on Minerva, and observations of hits were

 almost instantaneous; and if all that is not enough, Charlie could

 stand not ten yards from where we found him and distinguish details

 of Minerva's surface. These things could only be true if the place

 in question was within, say, half a million miles of Minerva.

 "Logically, the only explanation is that both moons were one and

 the same. We've been asking for a long time whether the Lunarian

 civilization developed on Earth or whether it developed on Minerva.

 Well, from the account I've given, it's obvious it was Minerva. We

 thought we had two contradictory sets of information, one telling

 us it was Earth and the other telling us it wasn't.

 But we had misinterpreted the data. It wasn't telling us anything

 to do with Earth or Minerva at all-it was telling us about Earth's

 or Minerva's moon! Some facts told us we were dealing with Earth's

 moon while others told us we were dealing with Minerva's moon. As

 long as we insisted on introducing, quite unconsciously, the notion

 that the two moons were different, the conflict between these sets

 of facts couldn't be resolved. But if, purely within the logical

 constraints of the situation, we introduce the postulate that both

 moons were the same, that conflict disappears before our eyes."

 Shock seemed to have overtaken the audience. At the front somebody

 was muttering, "Of course. . . of course. . ." half to himself and

 half aloud.

 "All that remains is to reconcile these propositions with the

 situation we observe around us today. Again, only one explanation

 is possible. Minerva exploded and dispersed to become the Asteroid

 Belt. The greater part of its mass, we're fairly sure, was thrown

 into the outer regions of the Solar System and became Pluto. Its

 moon, although somewhat shaken, was left intact. During the

 gravitational upheaval that occurred when its parent planet broke

 up, the sateffite's orbital momentum around the Sun was reduced and

 it began to fall inward.

 "We can't tell how long the orphaned moon plunged steadily nearer

 the Sun. Maybe the trip lasted months, maybe years. Next comes one

 of those million-to-one chances that sometimes happen in nature.

 The trajectory followed by the moon brought it close to Earth,

 which had been pursuing its own solitary path around the Sun ever

 since the beginning of time!" Hunt paused for a few seeonds. "Yes,

 I repeat, solitary path! You see, if we are to accept what I

 believe to be the only satisfactory explanation open to us, we must

 accept also its consequence: that until this point in time, some

 fifty thousand years ago, planet Earth had no moon! The two bodies

 drew close enough for their gravitational fields to interact to the

 point of mutual capture; the new, common orbit turned out to be

 stable, and Earth adopted a foundling it has kept right up to this

 day.

 "If we accept this account, many of the other things that have been

 causing problems suddenly make sense. Take, for example, the excess

 material that covers most of Lunar Farside and has been shown to be

 of recent origin, and coupled with that, the dat-

 lug of all Farside craters and some Nearside ones to around the

 time we're talking about. Now we have a ready explanation. When

 Minerva blew up, what is now Luna was sitting There right in the

 way of all the debris. That's where the meteorite storm came from.

 That's how practically all evidence of the Lunarian presence on

 Luna was wiped out. There's probably no end to remains of their

 bases, installations, and vehicles still there waiting to be

 uncovered-a thousand feet below the Farside surface. We think that

 the Annihilator emplacement at Seltar was on Farside. That suggests

 that what is Farside to Earth today was Nearside to Minerva; hence

 ft makes sense that most of the meteorite storm landed where it

 did.

 "Charlie appears to have referred to compass directions different

 from ours on the Lunar surface, implying a different north-south

 axis. Now we see why. Some people have asked why, if Luna suffered

 such an intense bombardment, there should be no signs of any

 comparable increase in meteorite activity on Earth at the time.

 This too now makes sense: When Minerva blew up, Luna was in its

 immediate vicinity but Earth wasn't. And a last point on Lunar

 physics- We've known for half a century that Luna is formed from a

 mix of rocky compounds different from those found on Earth, being

 low in volatiles and rich in refractories. Scientists have

 speculated for a long time that possibly the Moon was formed in

 another part of the Solar System. This indeed turns out to be true

 if what I've said is correct.

 "Some explanations have suggested that the Lunarians set up

 advanced bridgeheads on Luna. This enabled their evident presence

 there to be reconciled with evolutionary origins on Minerva, but

 raised an equally problematical question: Why were they struggling

 to master interplanetary space-flight technology when they must

 have had it already? In the account I have described, this problem

 disappears. They had reached their own moon, but were still some

 ways from being able to move large populations to anyplace as

 remote as Earth. Also, there is now no need to introduce the

 unsupported notion of Lunarian colonies on either planet; either

 way, it would pose the same question.

 "And finally, an unsolved riddle of oceanography makes sense in

 this light, too. Research into tidal motions has shown that

 catastrophic upheavals on a planetary scale occurred on Earth at

 about this time, resulting in an abrupt increase in the length of

 the

 day and an increase in the rate at which the day is further being

 lengthened by tidal friction. Well, the arrival of Minerva's moon

 would certainly create enormous gravitational and tidal

 disturbances. Although the exact mechanics aren't too clear right

 now, it appears that the kinetic energy acquired by Minerva's moon

 as it fell toward the Sun, was absorbed in neutralizing part of the

 Earth's rotational energy, causing a longer day. Also, increased

 tidal friction since then is to be expected. Before the Moon

 appeared, Earth experienced only Solar tides, whereas from that

 time up until today, there have been both Solar and Lunar tides."

 Hunt showed his empty hand in a gesture of finality and pushed

 himself back in his chair. He straightened the pile of notes on the

 desk before going on to conclude:

 "That's it. As I said earlier, at this stage it represents no more

 than a hypothesis that accounts for all the facts. But there are

 some things we can do toward testing the truth of it.

 "For a start, we have a large chunk of Minerva piled up all over

 Farside. The recent material is so like the original Lunar material

 that it was years before anybody realized it had been added only

 recently. That supports the idea that the Moon and the meteorites

 originated in the same part of the Solar System. I'd like to

 suggest that we perform detailed comparisons between data from

 Farside material and data from the Asteroid surveys. If the results

 indicate that they are both the same kind of stuff and appear to

 have come from the same place, the whole idea would be well

 supported.

 "Another thing that needs further work is a mathematical model of

 the process of mutual capture between Earth and Luna. We know quite

 a lot about the initial conditions that must have existed before

 and, of course, a lot more about the conditions that exist now. It

 would be reassuring to know that for the equations involved there

 exist solutions that allow one situation to transform into the

 other within the normal laws of physics. At least, it would be nice

 to prove that the whole idea isn't impossible.

 "Finally, of course, there is the Ganymean ship here. Without doubt

 a lot of new information is waiting to be discovered-far more than

 we've had to work on so far. I'm hoping that somewhere in the ship

 there will be astronomic data to tell us something about the Solar

 System at the time of the Ganymeans. If, for example, we could

 determine whether or not the third planet from

 the Sun of their Solar System had a satellite, or if we could learn

 enough about their moon to identify it as Luna-perhaps by

 recognizing Nearside surface features-then the whole theory would

 be well on the way to being proved.

 "This concludes the report.

 "Personal addendum for Gregg Caldwell . . ." The view of Hunt was

 replaced by a landscape showing a wilderness of ice and rock. "This

 place you've sent us to, Gregg-the mail service isn't too regular,

 so I couldn't send a postcard. It's over a hundred Celsius degrees

 below zero; there's no atmosphere worth talking about and what

 there is, is poisonous; the only way back is by Vega, and the

 nearest Vega is seven hundred miles away. I wish you were here to

 enjoy all the fun with us, Gregg-I really do!

 "V. Hunt from Ganymede Pithead Base. End of transmission."

 chapter twenty-four

  

 The long-awaited answers to where the Lunarians had come from and

 how they came to be where they had been found sent waves of

 excitement around the scientific world and prompted a new frenzy of

 activity in the news media. Hunt's explanation seemed complete and

 consistent. There were few objections or disagreements; the account

 didn't leave much to object to or disagree with.

 Hunt had therefore met fully the demands of his brief. Although

 detailed interdisciplinary work would continue all over the world

 for a long time to come, UNSA's formal involvement in the affair

 was more or less over. So Project Charlie was run down. That left

 Project Ganymeans, which was just starting up. Although he had not

 yet received any formal directive from Earth to say so, Hunt had

 the feeling that Caidwell wouldn't waste the opportunity offered by

 Hunt's presence on Ganymede just when the focus of attention was

 shifting from the Lunarians to the Ganymeans. In other words, it

 would be some time yet before he would find himself walking aboard

 an Earth-bound cruiser.

 A few weeks after the publication of UNSA's interim conclusions,

 the Navcomms scientists on Ganymede held a celebration dinner in

 the officers' mess at Pithead to mark the successful end of a major

 part of their task. The evening had reached the warm and mellow

 phase that comes with cigars and liqueurs when the last-course

 dishes have been cleared away. Talkative groups were standing and

 sitting in a variety of attitudes around the tables and by the bar,

 and beers, brandies, and vintage ports were beginning to flow

 freely. Hunt was with a group of physicists near the bar,

 discussing the latest news on the Ganymean field drive, while

 behind them another circle was debating the likelihood of a world

 government being established within twenty years. Danchekker seemed

 to have been unduly quiet and withdrawn for most of the evening.

 "When you think about ft, Vic, this could develop into the ulti

 mate weapon in interplanetary warfare," one of the physicists was

 saying. "Based on the same principles as the ship's drive, but a

 lot more powerful and producing a far more intense and localized

 effect. It would generate a black hole that would persist, even

 after the generator that made it had fallen into it. Just think-an

 artificially produced black hole. All you'd have to do is mount the

 device in a suitable missile and fire it at any planet you took a

 dislike to. It would fall to the center and consume the whole

 planet- and there'd be no way to stop it."

 Hunt looked intrigued. "You mean it could work?"

 "The theory says so."

 "Christ, how long would it take-to wipe out a planet?"

 "We don't know yet; we're still working on that bit. But there's

 more to it than that. There's no reason why you shouldn't be able

 to put out a star using the same method. Think about that as a

 weapon-one black-hole bomb could destroy a whole solar system. It

 makes nucleonic weapons look like kiddie toys."

 Hunt started to reply, but a voice from the center of the room cut

 him off, rising to make itself heard above the buzz of

 conversation. It belonged to the commander of Pithead Base, special

 guest at the dinner.

 "Attention, please, everybody," he called. "Your attention for a

 moment, please." The noise died as all faces turned toward him. He

 looked around until satisfied that everyone was paying attention.

 "You have invited me here tonight to join you in celebrating the

 successful conclusion of what has probably been one of the most

 challenging, the most astounding, and the most rewarding endeavors

 that you are ever likely to be involved in. You have had

 difficulties, contradictions, and disagreements to contend with,

 but all that is now in the past. The task is done. My

 congratulations." He glanced toward the clock above the bar. "It is

 midnight-a suitable time, I think, to propose a toast to the being

 that started the whole thing off, wherever he may be." He raised

 his glass. "To Charlie."

 "To Charlie," came back the chorus.

 "No!"

 A voice boomed from the back of the room. It sounded firm and

 decisive. Everybody turned to look at Danchekker in surprise.

 "No," the professor repeated. "We can't drink to that just yet."

 There was no suggestion of hesitation or apology in his manner.

 Clearly his action was reasoned and calculated.

 "What's the problem, Chris?" Hunt asked, moving forward away from

 the bar.

 "I'm afraid that's not the end of it."

 "How do you mean?"

 "The whole Charlie business- There is more to it-more than I have

 chosen to mention to anybody, because I have no proof. However,

 there is a further implication in all that has been deduced-one

 which is even more difficult to accept than even the revelations of

 the past few weeks."

 The festive atmosphere had vanished. Suddenly they were in business

 again. Danchekker walked slowly toward the center of the room and

 stopped with his hands resting on the back of one of the chairs. He

 gazed at the table for a moment, then drew a deep breath and looked

 up.

 "The problem with Charlie, and the rest of the Lunarians, that has

 not been touched upon is this: quite simply, they were too human."

 Puzzled looks appeared here and there. Somebody turned to his

 neighbor and shrugged. They all looked back at Danchekker in

 silence.

 "Let us recapitulate for a moment some of the fundamental

 principles of evolution," he said. "How do different animal species

 arise? Well, we know that variations of a given species arise from

 mutations caused by various agencies. It follows from elementary

 genetics that in a freely mixing and interbreeding population, any

 new characteristic will tend to be diluted, and will disappear

 within relatively few generations. However"-the professor's tone

 became deadly serious-"when sections of the population become

 reproductively isolated from one another-for example, by

 geegraphical separation, by segregation of behavior patterns, or by

 seasonal differences, say, in mating times-dilution through

 interbreeding will be prevented. When a new characteristic appears

 within an isolated group, it will be confined to and reinforced

 within that group; thus, generation by generation, the group will

 diverge from the other group or groups from which it has been

 isolated. Finally a new species will establish itself. This

 principle is fundamental to the whole idea of evolution: Given

 isolation, divergence will occur. The origins of all species on

 Earth can be

 traced back to the existence at some time of some mechanism or

 other of isolation between variations within a single species. The

 animal life peculiar to Australia and South America, for instance,

 demonstrates how rapidly divergence takes effect even when

 isolation has existed only for a short time.

 "Now we seem to be satisfied that for the best part of twenty-five

 million years, two groups of terrestrial animals-one on Earth, the

 other on Minerva-were left to evolve in complete isolation. As a

 scientist who accepts fully the validity of the principle I have

 just outlined, I have no hesitation in saying that divergence

 between these two groups must have taken place. That, of course,

 applies equally to the primate lines that were represented on both

 planets."

 He stopped and stood looking from one to the other of his

 colleagues, giving them time to think and waiting for a reaction.

 The reaction came from the far end of the room.

 "Yes, now I see what you're saying," somebody said. "But why

 speculate? What's the point in saying they should have diverged,

 when it's clear that they didn't?"

 Danchekker beamed and showed his teeth. "What makes you say they

 didn't?" he challenged.

 The questioner raised his arms in appeal. "What my two eyes tell

 me-I can see they didn't."

 "What do you see?"

 "I see humans. I see Lunarians. They're the same. So, they didn't

 diverge."

 "Didn't they?" Danchekker's voice cut the air like a whiplash. "Or

 are you making the same unconscious assumption that everyone else

 has made? Let me go over the facts once again, purely from an

 objective point of view. I'll simply list the things we observe and

 make no assumptions, conscious or otherwise, about how they fit in

 with what we think we already know.

 "First: The two populations were isolated. Fact.

 "Second: Today, twenty-five million years later, we observe two

 sets of individuals, ourselves and the Lunarians. Fact.

 "Third: We and the Lunarians are identical. Fact.

 "Now, if we accept the principle that divergence must have

 occurred, what must we conclude? Ask yourselves- If confronted by

 those facts and nothing else, what would any scientist deduce?"

 Danchekker stood facing them, pursing his lips and rocking

 back and forth on his heels. Silence enveloped the room, broken

 after a few seconds by his whistling quietly and tunelessly to

 himself.

 "Christ . . . !" The exclamation came from Hunt. He stood gaping at

 the professor in undisguised disbelief. "They couldn't have been

 isolated from each other," he managed at last in a slow, halting

 voice. "They must both be from the same. . ." The words trailed

 away.

 Danchekker nodded with evident satisfaction. "Vic's seen what I am

 saying," he informed the group. "You see, the only logical

 conclusion that can be drawn from the statements I have just

 enumerated is this: If two identical forms are observed today, they

 must both come from the same isolated group. In other words, if two

 lines were isolated and branched apart, both forms must lie on the

 same branch!"

 "How can you say that, Chris?" someone insisted. "We know they came

 from different branches."

 "What do you know?" Danchekker whispered.

 "Well, I know that the Lunarians came from the branch that was

 isolated on Minerva. . ."

 "Agreed."

 ". . . And I know that man comes from the branch that was isolated

 on Earth."

 "How?"

 The question echoed sharply around the walls like a pistol shot.

 "Well" The speaker made a gesture of helplessness. "How do I

 answer a question like that? It. . . it's obvious."

 "Precisely!" Danchekker showed his teeth again. "You assume it-just

 as everybody else does! That's part of the conditioning you've

 grown up with. It has been assumed all through the history of the

 human race, and naturally so-there has never been any reason to

 suppose otherwise." Danchekker straightened up and regarded the

 room with an unblinking stare. "Now perhaps you see the point of

 all this. I am stating that, on the evidence we have just examined,

 the human race did not evolve on Earth at all. It evolved on

 Minerva!"

 "Oh, Chris, really. . ."

 "This is getting ridiculous. .

 Danchekker hammered on relentlessly: "Because, if we accept that

 divergence must have occurred, then both we and the Lu-

 narians must have evolved in the same place, and we already know

 that they evolved on Minerva!"

 A murmur of excitement mixed with protest ran around the room.

 "I am stating that Charlie is not just a distantly related cousin

 of man-he is our direct ancestor!" Danchekker did not wait for

 comment but pressed on in the same insistent tone: "And I believe

 that I can give you an explanation of our own origins which is

 fully consistent with these deductions." An abrupt silence fell

 upon the room. Danchekker regarded his colleagues for a few

 seconds. When he spoke again, his voice had fallen to a calmer and

 more objective note.

 "From Charlie's account of his last days, we know that some

 Lunarians were left alive on the Moon after the fighting died down.

 Charlie himself was one of them. He did not survive for long, but

 we can guess that there were others-desperate groups such as the

 ones he described-scattered across that Lunar surface. Many would

 have perished in the meteorite storm on Farside, but some, like

 Charlie's group, were on Nearside when Minerva exploded and were

 spared the worst of the bombardment. Even a long time later, when

 the Moon finally stabilized in orbit around Earth, a handful of

 survivors remained who gazed up at the new world that hung in their

 sky. Presumably some of their ships were still usable-perhaps just

 one, or two, or a few. There was only one way out. Their world had

 ceased to exist, so they took the only path open to them and set

 off on a last, desperate attempt to reach the surface of Earth.

 There could be no way back-there was no place to go back to.

 "So we must conclude that their attempt succeeded. Precisely what

 events followed their emergence out into the savagery of the Ice

 Age we will probably never know for sure. But we can guess that for

 generations they hung on the very edge of extinction. Their

 knowledge and skills would have been lost. Gradually they reverted

 to barbarism, and for forty thousand years were lost in the midst

 of the general struggle for survival. But survive they did. Not

 only did they survive, they consolidated, spread, and flourished.

 Today their descendants dominate the Earth just as they dominated

 Minerva-you, I, and the rest of the human race."

 A long silence ensued before anybody spoke. When somebody did, the

 tone was solemn. "Chris, assuming for now that every-

 thing was like you've said, a point stifi bothers me: If we and the

 Lunarians both came from the Minervan line, what happened to the

 other line? Where did the branch that was developing on Earth go?"

 "Good question." Danchekker nodded approval. "We know from the

 fossil record on Earth that during the period that came after the

 visits of the Ganymeans several developments in the general human

 direction took place. We can trace this record quite clearly right

 up to the time in question, fifty thousand years ago. By that time

 the most advanced stage reached on Earth was that represented by

 Neanderthal man. Now, the Neanderthals have always been something

 of a riddle. They were hardy, tough, and superior in intelligence

 to anything prior to them or coexisting with them. They seemed well

 adapted to survive the competition of the Ice Age and should, one

 would think, have attained a dominant position in the era that was

 to follow. But that did not happen. Strangely, almost mysteriously,

 they died out abruptly between forty and fifty thousand years ago.

 Apparently they were unable to compete effectively against a new

 and far more advanced type of man, whose sudden appearance, as if

 from nowhere, has always been another of the unsolved riddles of

 science:

 Homo sapiens-us!"

 Danchekker read the expressions on the faces before him and nodded

 slowly to confirm their thoughts.

 "Now, of course, we see why this was so. He did indeed appear out

 of nowhere. We see why there is no clear fossil record in the soil

 of Earth to link Homo sapiens back to the chain of earlier

 terrestrial man-apes: He did not evolve there. And we see what it

 was that so ruthlessly and so totally overwhelmed the Neanderthals.

 How could they hope to compete against an advanced race, weaned on

 the warrior cult of Minerva?"

 Danchekker paused and allowed his gaze to sweep slowly around the

 circle of faces. Everybody seemed to be suffering from mental

 punch-drunkenness.

 "As I have said, all this follows purely as a chain of reasoning

 from the observations with which I began. I can offer no evidence

 to support it. I am convinced, however, that such evidence does

 exist. Somewhere on Earth the remains of the Lunarian spacecraft

 that made that last journey from Luna must still exist, possibly

 buried beneath the mud of a seabed, possibly under the sands of

 one of the desert regions. There must exist, on Earth, pieces of

 equipment and artifacts brought by the tiny handful who represented

 the remnant of the Lunarian civilization. Where on Earth, is

 anyone's guess. Personally, I would suggest as the most likely

 areas the Middle East, the eastern Mediterranean, or the eastern

 regions of North Africa. But one day proof that what I have said is

 true will be forthcoming. This I predict with every confidence."

 The professor walked around to the table and poured a glass of

 Coke. The silence of the room slowly dissolved into a rising tide

 of voices. One by one, the statues that had been listening returned

 to life. Danchekker took a long drink and stood in silence for a

 while, contemplating his glass. Then he turned to face the room

 again.

 "Suddenly lots of things that we have always simply taken for

 granted start falling into place." Attention centralized on him

 once again. "Have you ever stopped to think what it is that makes

 man so different from all the other animals on Earth? I know that

 we have larger brains, more-versatile hands, and so forth; what I

 am referring to is something else. Most animals, when in a hopeless

 situation will resign themselves to fate and perish in ignominy.

 Man, on the other hand, does not know how to give in. He is capable

 of summoning up reserves of stubbornness and resilience that are

 without parallel on his planet. He is able to attack anything that

 threatens his survival, with an aggressiveness the like of which

 the Earth has never seen otherwise. It is this that has enabled him

 to sweep all before him, made him lord of all the beasts, helped

 him tame the winds, the rivers, the tides, and even the power of

 the Sun itself. This stubbornness has conquered the oceans, the

 skies, and the challenges of space, and at times has resulted in

 some of the most violent and bloodstained periods in his history.

 But without this side to his nature, man would be as helpless as

 the cattle in the field."

 Danchekker scanned the faces challengingly. "Well, where did it

 come from? It seems out of character with the sedate and easygoing

 pattern of evolution on Earth. Now we see where it came from: It

 appeared as a mutation among the evolving primates that were

 isolated on Minerva. It was transmitted through the population

 there until it became a racial characteristic. It proved to be such

 a devastating weapon in the survival struggle there that effective

 opposition ceased to exist. The inner driving force that it pro

 duced was such that the Lunarians were flying spaceships while

 their contemporaries on Earth were still playing with pieces of

 stone.

 "That same driving force we see in man today. Man has proved

 invincible in every challenge that the Universe has thrown at him.

 Perhaps this force has been diluted somewhat in the time that has

 elapsed since it first appeared on Minerva; we reached the brink of

 that same precipice of self-destruction but stepped back. The

 Lunarians hurled themselves in regardless. It could be that this

 was why they did not seek a solution by cooperation-their in-built

 tendency to violence made them simply incapable of conceiving such

 a formula.

 "But this is typical of the way in which evolution works. The

 forces of natural selection will always operate in such a way as to

 bend and shape a new mutation, and to preserve a variation of it

 that offers the best prospects of survival for the species as a

 whole. The raw mutation that made the Lunarians what they were was

 too extreme and resulted in their downfall. Improvement has taken

 the form of a dilution, which results in a greater psychological

 stability of the race. Thus, we survive where they perished."

 Danchekker paused to finish his drink. The statues remained

 statues.

 "What an incredible race they must have been," he said. "Consider

 in particular the handful who were destined to become the

 forefathers of mankind. They had endured a holocaust unlike

 anything we can even begin to imagine. They had watched their world

 and everything that was familiar explode in the skies above their

 heads. After this, abandoned in an airless, waterless, lifeless,

 radioactive desert, they were slaughtered beneath the billions of

 tons of Minervan debris that crashed down from the skies to

 complete the ruin of all their hopes and the total destruction of

 all they had achieved.

 "A few survived to emerge onto the surface after the bombardment.

 They knew that they could live only for as long as their supplies

 and their machines lasted. There was nowhere they could go, nothing

 they could plan for. They did not give in. They did not know how to

 give in. They must have existed for months before they realized

 that, by a quirk of fate, a slim chance of survival existed.

 "Can you imagine the feelings of that last tiny band of Lunarians

 as they stood amid the Lunar desolation, gazing up at the new world

 that shone in the sky above their heads, with nothing else alive

 around them and, for all they knew, nothing else alive in the

 Universe? What did it take to attempt that one-way journey into the

 unknown? We can try to imagine, but we will never know. Whatever it

 took, they grasped at the straw that was offered and set off on

 that journey.

 "Even this was only the beginning. When they stepped out of their

 ships onto the alien world, they found themselves in the midst of

 one of the most ruthless periods of competition and extinction in

 the history of the Earth. Nature ruled with an uncompromising hand.

 Savage beasts roamed the planet; the climate was in turmoil

 following the gravitational upheavals caused by the arrival of the

 Moon; possibly they were decimated by unknown diseases. It was an

 environment that none of their experience had prepared them for.

 Still they refused to yield. They learned the ways of the new

 world: They learned to feed by hunting and trapping, to fight with

 spear and club; they learned how to shelter from the elements, to

 read and interpret the language of the wild. And as they became

 proficient in these new arts they grew stronger and ventured

 farther afield. The spark that they had brought with them and which

 had carried them through on the very edge of extinction began to

 glow bright once again. Finally that glow erupted into the flame

 that had swept all before it on Minerva; they emerged as an

 adversary more fearsome and more formidable than anything the Earth

 had ever known. The Neanderthals never stood a chance-they were

 doomed the moment the first Lunarian foot made contact with the

 soil of Earth.

 "The outcome you see all around you today. We stand undisputed

 masters of the Solar System and poised on the edge of interstellar

 space itself, just as they did fifty thousand years ago."

 Danchekker placed his glass carefully on the table and moved slowly

 toward the center of the room. His sober gaze shifted from eye to

 eye. He concluded: "And so, gentlemen, we inherit the stars.

 "Let us go out, then, and claim our inheritance. We belong to a

 tradition in which the concept of defeat has no meaning. Today the

 stars and tomorrow the galaxies. No force exists in the Universe

 that can stop us."

 epilogue

  

 Professor Hans Jacob Zeiblemann, of the Department of Paleontology

 of the University of Geneva, finished his entry for the day in his

 diary, closed the book with a grunt, and returned it to its place

 in the tin box underneath his bed. He hoisted his twohundred-pound

 bulk to its feet and, drawing his pipe from the breast pocket of

 his bush shirt, moved a pace across the tent to knock out the ash

 on the metal pole by the~ door. As he stood packing a new fill of

 tobacco into the bowl, he gazed out over the arid landscape of

 northern Sudan.

 The Sun had turned into a deep gash just above the horizon, oozing

 blood-red liquid rays that drenched the naked rock for miles

 around. The tent was one of three that stood crowded together on a

 narrow sandy shelf. The shelf was formed near the bottom of a

 steep-sided rocky valley, dotted with clumps of coarse bush and

 desert scrub that clustered together along the valley floor and

 petered out rapidly, without gaining the slopes on either side. On

 a wider shelf beneath stood the more numerous tents of the native

 laborers. Obscure odors wafting upward from this direction signaled

 that preparation of the evening meals had begun. From farther below

 came the perpetual sound of the stream, rushing and clattering and

 jostling on its way to join the waters of the distant Nile.

 The crunch of boots on gravel sounded nearby. A few seconds later

 Zeiblemann's assistant, Jorg Hutfauer, appeared, his shirt dark and

 streaked with perspiration and grime.

 "Phew!" The newcomer halted to mop his brow with something that had

 once been a handkerchief. "I'm whacked. A beer, a bath, dinner,

 then bed-that's my program for tonight."

 Zeiblemann grinned. "Busy day?"

 "Haven't stopped. We've extended sector five to the lower terrace.

 The subsoil isn't too bad there at all. We've made quite a bit of

 progress."

 "Anything new?"

 "I brought these up-thought you might be interested. There's more

 below, but it'll keep till you come down tomorrow." Hutfauer passed

 across the objects he had been carrying and continued on into the

 tent to retrieve a can of beer from the pile of boxes and cartons

 under the table.

 "Mmm . . ." Zeiblemann turned the bone over in his hand. "Human

 femur . . . heavy." He studied the unusual curve and measured the

 proportions with his eye. "Neanderthal, I'd say.

 or very near related."

 "That's what I thought."

 The professor placed the fossil carefully in a tray, covered it

 with a cloth, and laid the tray on the chest standing just inside

 the tent doorway. He picked up a hand-sized blade of ifint, simply

 but effectively worked by the removal of long, thin flakes.

 "What did you make of this?" he asked.

 Hutfauer moved forward out of the shadow and paused to take a

 prolonged and grateful drink from the can.

 "Well, the bed seems to be late Pleistocene, so I'd expect upper

 Paleolithic indications-which fits in with the way it's been

 worked. Probably a scraper for skinning. There are areas of

 microliths on the handle and also around the end of the blade.

 Bearing in mind the location, I'd put it at something related

 fairly closely to the Capsian culture." He lowered the can and

 cocked an inquiring eye at Zeiblemann.

 "Not bad," said the professor, nodding. He laid the flint in a tray

 beside the first and added the identification sheet that Hutfauer

 had written out. "We'll have a closer look tomorrow when the

 light's a little better."

 Hutfauer joined him at the door. The sound of jabbering and

 shouting from the level below told them that another of the

 natives' endless minor domestic disputes had broken out over

 something.

 "Tea's up if anyone's interested," a voice called out from behind

 the next tent.

 Zeiblemann raised his eyebrows and licked his lips. "What a

 splendid idea," he said. "Come on, Jorg."

 They walked around to the makeshift kitchen, where Ruddi Magendorf

 was sitting on a rock, shoveling spoonfuls of tea leaves out of a

 tin by his side and into a large bubbling pot of water.

 "Hi, Prof-hi, Jorg," he greeted as the two joined him. "It'll be

 brewed in a minute or two."

 Zeiblemann wiped his palms on the front of his shirt. "Good. Just

 what I could do with." He cast his eye about automatically and

 noted the trays, covered by cloths, laid out on the trestle table

 by the side of Magendorf's tent.

 "Ah, I see you've been busy as well," he observed. "What do we have

 there?"

 Magendorf followed his gaze.

 "Jomatto brought them up about half an hour ago. They're from the

 upper terrace of sector two-east end. Take a look."

 Zeiblemann walked over to the table and uncovered one of the trays

 to inspect the neatly arrayed collection, at the same time mumbling

 absently to himself.

 "More ifint scrapers, I see . . . Mmmm . . . That could be a hand

 ax. Yes, I believe it is . . . Bits of jawbone, human .

 looks as if they might well match up. Skull cap. . . Bone spearhead

 . . . Mmm . . ." He lifted the cloth from the second tray and began

 running his eye casually over the contents. Suddenly the movement

 of his head stopped abruptly as he stared hard at something at one

 end. His face contorted into a scowl of disbelief.

 "What the hell is this supposed to be?" he bellowed. He

 straightened up and walked back toward the stove, holding the

 offending object out in front of him.

 Magendorf shrugged and pulled a face.

 "I thought you'd better see it," he offered, then added: "Jomatto

 says it was with the rest of that set."

 "Jomatto says what?" Zeiblemann's voice rose in pitch as he

 glowered first at Magendorf and then back at the object in his

 hand. "Oh, for God's sake! The man's supposed to have a bit of

 sense. This is a serious scientific expedition. . ." He regarded

 the object again, his nostrils quivering with indignation.

 "Obviously one of the boys has been playing a silly joke or

 something."

 It was about the size of a large cigarette pack, not including the

 wrist bracelet, and carried on its upper face four windows that

 could have been meant for miniature electronic displays. It

 suggested a chronometer or calculating aid, or maybe it was both

 and other things besides. The back and contents were missing, and

 all that was left was the metal casing, somewhat battered and

 dented, but still surprisingly unaffected very much by corrosion.

 "There's a funny inscription on the bracelet," Magenclorf said,

 rubbing his nose dubiously. "I've never seen characters like it

 before."

 Zeiblemann sniffed and peered briefly at the lettering.

 "Pah! Russian or something." His face had taken on a pinker shade

 than even that imparted by the Sudan sun. "Wasting valuable time

 with-with dime-store trinkets!" He drew back his arm and hurled the

 wrist set high out over the stream. It flashed momentarily in the

 sunlight before plummeting down into the mud by the water's edge.

 The professor stared after it for a few seconds and then turned

 back to Magendorf, his breathing once again normal. Magendorf

 extended a mug full of steaming brown liquid.

 "Ah, splendid," Zeiblemann said in a suddenly agreeable voice.

 "Just the thing." He settled himself into a folding canvas chair

 and accepted the proffered mug eagerly. "I'll tell you one thing

 that does look interesting, Ruddi," he went on, nodding toward the

 table. "That piece of skull in the first tray-number nineteen. Have

 you noticed the formation of the brow ridges? Now, it could well be

 an example of. .

 In the mud by the side of the stream below, the wrist unit rocked

 back and forth to the pulsing ripples that every few seconds rose

 to disturb the delicate equilibrium of the position into which it

 had fallen. After a while, a rib of sand beneath it was washed away

 and it tumbled over into a hollow, where it lodged among the

 swirling, muddy water. By nightfall, the lower half of the casing

 was already embedded in silt. By the following morning, the hollow

 had disappeared. Just one arm of the bracelet remained, standing up

 out of the sand below the rippling surface. The arm bore an

 inscription, which, if translated, would have read: KORIEL.

  

  

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