"The Galaxy Is On Fire," said Captain James T. Kirk. The grim look on his face told his officers he was not joking. Of the six others in the briefing room of the U.S.S. Enterprise, four looked astonished, even shocked. But First Officer Spock, who already knew the facts of the case, showed no expression at all—as he rarely did in any event. And Lieutenant Uhura, the ship's communications officer, merely looked resigned; she'd been dreaming of flames and blistering heat for the past three nights.
"You are going to explain that, Captain, aren't you?" The skepticism in Chief Medical Officer Leonard McCoy's voice was even heavier than usual.
"You all know that for over a week we've been getting measurements of extreme heat from the direction of the Beta Castelli star system," Kirk said. "Until recently. A few hours ago our telemetry probes stopped transmitting."
"They must have been defective," suggested helmsman Lieutenant Sulu, who'd sent out the probes himself. "All systems were operative our end."
"How many probes did we use altogether, Mr. Sulu?"
"Six," the helmsman admitted. Probes were normally sent out in pairs. When the first pair had stopped sending back data, Sulu had launched another. And then another.
"And you're seriously suggesting the Enterprise was fitted with six defective probes at the same time?" the captain persisted. "I've never seen even one defective probe, not in all my years in the service. Six at once is out of the question. No, the reason those probes stopped transmitting is that … they melted."
Uhura shuddered but said nothing.
"Here, now, Captain!" Chief Engineer Montgomery Scott objected. "Those probes are cased in tempered alphidium! Why, for those hulls to melt, the heat'd have to be—"
"Unmeasurable." Spock spoke for the first time. "Unmeasurable by our probe instrumentation, that is. And therein lies the difficulty. The last few readings we did receive revealed temperatures at the extreme end of the telemetry capability. The readings held steady for twenty-one minutes, seventeen seconds precisely. Then the transmissions stopped. The most reasonable conclusion is, as the captain has stated, that the heat was extreme enough to melt our probes."
"Mr. Spock!" Scott's eyes were large, his face disbelieving. "D'ye have any idea how hot it'd have to be for alphidium to melt?"
"Yes, Mr. Scott. I do."
"Hot enough to melt us, too," Kirk pointed out. "The Enterprise could turn into a pressure cooker. Everything in sector 79F is in danger. And the heat is advancing, spreading out more and more the farther it gets from its source."
"Vhat about Zirgos?" It was the ship's navigator, Ensign Pavel Chekov, who asked that. Zirgos was their destination, the third of four planets orbiting Beta Castelli.
"Zirgos is gone," Kirk said bluntly. "Even before our probes stopped working, we were getting no planetary readings from the Beta Castelli system at all. None whatsoever. The whole star system has vanished." He paused. "Including the star itself."
There was a stunned silence. Then Chekov asked, "You mean the star vent supernova?"
"Not possible, Ensign," Spock said. "The star was not yet in its death throes." The Vulcan used the library computer to call up a schematic of the star system in question. "Beta Castelli was an ordinary G2 main sequence star of a minus twenty-seven magnitude. Although the star was consuming hydrogen at the rate of five hundred million tons per second, its fuel supply was in no danger of immediate exhaustion. The general estimate was that Beta Castelli would not reach its helium flash point for another five billion years. In addition, the star massed only point nine solar, insufficient to attain supernova state. Any explosion could be only minor, certainly insufficient to obliterate all traces of every one of its orbiting bodies."
"It was too young and too small," Kirk translated. "No, something else caused it. Something came along and incinerated an entire star system."
Uhura made a sound of dismay. "But what is hot enough to burn up a star?"
Kirk nodded. "Exactly. That, I'm afraid, is what we have to find out. So we're going to go in as close as we can and measure whatever's left to measure. Maybe there's enough residue to give us a clue."
"Excuse me for being dense," Dr. McCoy drawled, "but shouldn't we be heading in the opposite direction? Anything hot enough to fricassee a star should be able to vaporize the Enterprise from lightyears away. Just where is this thing anyway?"
"Unknown, Doctor," Spock said. "We are not even sure it is a 'thing'—it could be a phenomenon of nature that we know nothing about. We need more data."
"And so we go jump in the furnace to see how hot it is," McCoy grumbled.
"Not quite, Bones," Kirk smiled. "We go up to the outside of the furnace and read the temperature gauge."
"Captain," Scott said worriedly, "what about the Zirgosian people? Did they get away?"
Kirk sighed heavily. "I don't know, Scotty. There've been no distress signals … Uhura?"
"Nothing," Uhura confirmed. "Nothing but static from that entire sector."
"So they dinna make it?"
Chekov shook his head. "Incredible. An entire race of people … viped out."
"Maybe not," Kirk said. "Zirgos did have colonies. Spock?"
"The Zirgosians colonized two of the other three planets orbiting Beta Castelli," the Vulcan said. "The third was a gas giant. But all four planets are gone now. However, Zirgos did colonize one world outside its home star system. Presumably there are survivors there."
"So the race isn't extinct?" Sulu asked.
"We'll find out," Kirk said. "But right now let's go see what's causing this unbelievable outpouring of heat. Engineer, we'll be putting a strain on the ship's coolant system. You're going to have to monitor the dilithium couplings for overload."
"Aye, sir."
"Lieutenant Uhura, notify Starfleet Command what we're up to. And send a subspace message to that other world the Zirgosians colonized—what's it called, Spock?"
"Holox, Captain."
"Holox. Ask them what they know about this."
"Yes, sir." Uhura rose and followed the captain out of the briefing room. Chief Engineer Scott headed toward the dilithium reactor room on O Deck, but Dr. McCoy tagged along after the others to the bridge. The ride up in the turbolift was a silent one. They were not only disturbed over the fate of the Zirgosian people but also concerned for their own safety, a mixture that made casual conversation impossible.
They'd been on a routine inspection mission, checking to see if the Klingons were honoring their truce and not violating Zirgosian space. Zirgos was one of a number of Federation worlds the Enterprise was scheduled to visit, to make sure the planet's star lanes remained inviolate. Watchdog duty was generally unexciting, but it was important; now, however, it would have to be postponed for as long as this unexplained and continuing flow of heat threatened them all. This time, the Klingons could wait.
On the bridge, Spock, Uhura, Chekov, and Sulu silently moved to their posts. But instead of taking the command chair, Captain Kirk stood with his hands on his hips staring at the main viewscreen, which told him nothing. A normal-looking starfield was displayed—not glowing red or smoking or giving any other indication that it was on the verge of being incinerated. But the life-destroying heat was out there.
"Mr. Chekov, lay in a course that takes us toward the center of that heat."
The young navigator studied his instruments. "But Kepten … vhere is the center? I cannot find it—the heat is too diffuse!"
"Ensign Chekov is correct, Captain," Spock interposed. "That high a temperature is beyond our instrumentation's ability to pinpoint."
"All right, then, pick a spot."
Nervously Chekov picked a spot. "Two one one mark four."
"Ahead full, Mr. Sulu."
"Ahead full," the helmsman repeated.
Dr. McCoy cleared his throat. "Is it my imagination, or is it beginning to get warm in here?"
"It's your imagination," Kirk told him. "We're a couple of days away from the point where we should start feeling the heat."
"I'm already feeling the heat," McCoy muttered. "Jim, even if we do get in close enough to get a measurement—what's that going to tell us that we don't already know?"
"Cause? Source? Duration? We won't know until we get there. How would you go about investigating a fire-related catastrophe?"
"I'd call the fire department."
"Bones, we're the fire department."
McCoy threw up his hands. "I'll be in sickbay." Clearly this was one of those times it didn't pay to argue with James T. Kirk.
The captain watched him step into the turbolift, vaguely wondering whether McCoy's well-known worrywart tendencies might in fact prove to be justified this time. He sat down in the command chair and said, "Mr. Spock, any discernible increase in temperature readings yet?"
"Decidedly, Captain." The first officer was also the ship's science officer; at the moment they were both bending over the sensors viewer. "The readings indicate an unmeasurable wave of heat is headed our way at high speed. At our present rate of progress, we will meet the leading edge of the heat front in thirty-one point six hours. We will start feeling the effects of the heat long before that, of course."
"Of course," Kirk murmured. He stared out at the starfield. Now there was nothing to do but wait, wait and wonder what could be out there that was hotter than a star.
Uhura looked at her bed with revulsion. She needed sleep if she was to continue performing at peak efficiency. But the last three nights had been filled with terrors—alternating periods of nightmares and sleeplessness. She knew it would be the same this time.
And the periods of sleeplessness were filled with remembering. She was recalling details that had remained buried deep in her unconscious despite her best efforts at exorcising her own particular demon. Smells as well as images came creeping back. The stench of a computer console as it burned and threw out sparks. The sinus-burning smoke from a window curtain that disappeared bit by bit as the flames crawled upward. The sweet, pungent odor given off by a small, delicate, wooden gazelle her grandfather had carved for her, its legs burning away from under it one by one.
And the one image she could never forget: T'iana, caught under a fallen beam, calling out to Uhura for help, crying as only a terrified child can cry. Uhura, only ten years old herself, blinded by the smoke, trying to fight her way through the flames to reach T'iana, while adult voices screamed at her to get out, screamed at her that her hair was on fire …
Her first dream, three nights ago, had been of the adults slapping at her head with their hands, trying to smother the flames that were eating up her hair. But in the dream it had gone on a lot longer than it had in fact, and the flames had proved more stubborn; they'd run down her arms, her back … while the adults kept slapping at her head, slapping hard. That was the first time she'd wakened in a sweat, so shaken it had taken her two hours to get back to sleep again.
One of the doctors who'd treated her at the time warned her she would have related dreams of the fire—as indeed she did, for almost a year after T'iana died. But gradually the dreams had grown less intense and had begun to occur less frequently; by the time Uhura reached adolescence, she had recovered from the trauma.
Or so everyone told her. She'd even witnessed another fire at the age of sixteen without any undue panic. Uhura knew it was guilt over not having been able to save her friend that was behind the nightmares; she was still haunted by a memory of responsibility not fulfilled. She'd long since come to terms with the fact that there had been no way that she, a burning child herself, could have saved the other burning child. She forgave herself for not being able to perform the impossible. She'd done all the psychmed had told her she must do.
And it hadn't made one bit of difference.
It still hurt to think of T'iana, of her laughing face, of her mind full of creative mischief. They'd met at the Institute for Advanced Mathematics, which vigorously operated a special program for gifted children. None of the children there had a private room; since each of them worked basically alone for six hours every day, the Institute insisted upon shared rooms as a way of counteracting the propensity toward isolationistic traits that could so easily develop in their scholarly young minds. And so Uhura and T'iana had been more or less arbitrarily thrown together, and to their mutual joy and delight they quickly discovered they pretty much operated on the same wavelength. They'd formed a bond that was not broken even yet, all these years after the ugly and terrifying death one of them had suffered.
A memory of responsibility not fulfilled.
Then three days ago on the bridge Mr. Spock had calmly announced the probes had encountered a field of heat so intense their instruments were incapable of measuring it. Uhura had watched impassively as the first pair of probes failed, then the second, then the third, knowing instinctively they had all been incinerated out in what was supposed to be the cold of space. Even before Captain Kirk told them about the planet Zirgos and its star, Beta Castelli, she knew she was about to face the biggest fire of her life. And the dreams had started.
She stared at her bed hopelessly; it was no use. She couldn't stay awake forever, but the dreams were even worse than not sleeping. Something had to be done. Uhura dressed quickly and left her quarters. Dr. McCoy, she thought. He'd help.
When she got to sickbay, the doctor was busy in the examination room. She waited in his office, sitting in a chair that faced McCoy's empty desk. It was quiet there; the hum of the ship was muted and even the intercom remained silent. Uhura's eyes slowly began to close and her head tipped forward. She jerked herself awake with an effort.
"Well, Lieutenant, something I can do for you?" McCoy came in and perched on the corner of his desk facing her. "You're looking a little peaked."
Uhura hesitated, then blurted out: "I want you to give me a dream-suppressant."
McCoy's eyebrows rose. "I can't do that. The dream-suppressant drugs are used only for treating manic depressives in immediate danger of harming themselves. Those drugs are illegal on a lot of worlds. They're habit-forming and they're dangerous."
"I'm not asking for any kind of full-scale treatment. I want just one dose, Doctor—for tonight. Sometime tomorrow we'll be meeting that wave of heat and I must be alert for that. I need one night of uninterrupted sleep. Just one dose."
He shook his head. "Absolutely not. Even one dose is addictive, and believe me, the withdrawal treatment is a lot worse than any nightmares you might be having. But that's only a secondary danger. The real danger is that it works—you end up not dreaming at all. And do you know what the medical prognosis is for the dream-deprived?"
"No," she said with a sigh. "Tell me."
"They go looney tunes," Dr. McCoy said bluntly. "We have to dream. It's what keeps us functioning." He paused, and then said more gently, "Why don't you tell me about it, Uhura? What are the dreams about?"
"Fire," she responded dully. "I keep dreaming of fire."
McCoy nodded sympathetically. Only three people aboard the Enterprise knew of Uhura's traumatic childhood experience with fire—the captain, the first officer, and the chief medical officer; it was part of Uhura's medical record and would follow her as long as she remained in the service. McCoy asked, "Old memories coming back? Or new kinds of fire?"
"A mixture of both. They all start out as memories, but then they balloon out into something even worse. Something that's … unstoppable. I keep waking up covered with sweat, four and five times a night. I'm afraid to go to sleep."
"How long has this been going on?"
"Three nights, ever since we first learned of that all-consuming heat we're racing to meet. Tonight would be the fourth. Dr. McCoy … I just can't face another night of it."
"You won't have to," he smiled. "I can't give you the dream-suppressant you want, but I have a nice compromise that should let you get a good night's sleep." He pressed a button on his intercom. "Nurse Chapel, prepare a hypo of Tridocane. Lieutenant Uhura will be out in a moment."
"Yes, Doctor," said the voice on the intercom.
"What I'm giving you," McCoy said to Uhura, "is a new tricyclic compound that shifts some of the time you spend in REM sleep over to delta sleep. The REM state is where most dreams occur, so you'll be dreaming less. But Tridocane has a little something extra that should do you a world of good. It lets you stop a dream that turns threatening."
Uhura looked startled. "How?"
"You just think 'Stop!' It works as a chemohypnotic. The drug and your brain chemistry cooperate to give you a limited control over your unconscious thought processes, and that includes dreams. That way you aren't totally at the mercy of whatever your unconscious chooses to throw at you. Something scares you, you think 'Stop'—and it will stop. You may have to run through the beginnings of half a dozen dreams before you find one that looks safe, but you will be able to decide which one you'll finally dream. And best of all, you won't end up a dream-deficient basket case in need of extensive therapy before you can function again."
Uhura smiled, the first time in days. "It really will work?"
McCoy smiled back. "It really will work. This is only a temporary measure, you understand. It won't cure what's causing the dreams, but it will let you get some sleep. Come see me tomorrow."
Uhura thanked him and went into the examination room, where Christine Chapel was waiting with the Tridocane. After she'd administered the hypo, Nurse Chapel said, "Some patients find this works faster if they keep repeating the word 'Stop' to themselves just as they're falling asleep. Why don't you try that, since this is your first time."
"All right, Christine. Are there any side effects I should know about?"
"No, none—no groggy feeling the next day or anything. The only problem with Tridocane is that it tends to lose its effectiveness after the third or fourth use."
Uhura was dismayed. "So this will help me only four nights at the most? That's all?"
Nurse Chapel put a hand on her friend's arm. "It's only a temporary measure, Uhura. Didn't Dr. McCoy tell you?"
"Oh. Yes, he did say that," Uhura admitted. "Well, I suppose it's better than nothing. Thanks, Christine."
Uhura went back to her quarters and quickly prepared for bed. She lay down and closed her eyes and did what Christine Chapel had told her to do. Stop, she thought, a bit desperately.
Stop. Stop.
Captain James T. Kirk forced himself to stand still and not pace. The bridge temperature was the highest he'd ever felt it, and unnecessary movement could only increase his personal discomfort. Thirty hours had lapsed since he'd first announced that the galaxy was on fire, and now the Enterprise itself felt ready to burst into flames. The ship's coolant system was overtaxed, small electrical fires had broken out in four or five places, and Scotty was calling every two minutes to say the ship couldn't take much more. Everyone on the bridge was sweating—except the Vulcan first officer. Kirk could feel the heat through the soles of his boots.
"How much farther, Mr. Spock?" he demanded.
"We're almost within sensor range now, Captain. Just a little closer."
Kirk strode over to the communications station. "No answer from Holox yet?"
"No, sir," Uhura said. "I've repeated the message on every comnet frequency open to this sector. They must have received it by now." The colonized planet had remained stubbornly silent. Another mystery.
Chekov called out, "Tventy-two minutes to heat front!"
Twenty-two minutes, Kirk thought. He sat in the command chair. "Mr. Spock?"
"Readings coming in now, Captain." The Vulcan studied the symbols scrolling through his viewer. "Temperature beyond our capability to measure, but gas analysis is in. Twenty-five percent ionized helium and seventy-five percent ionized hydrogen, plus trace elements." Spock straightened up from his viewer. "Fascinating." His voice had a seldom-heard edge to it.
"Captain Kirk!" Scott's voice erupted from the speaker system. "We canna take any more! The—"
Kirk slapped a button on his armrest control panel. "Not now, Mr. Scott! Why 'fascinating', Spock?"
"The three-to-one hydrogen-helium ratio—that's exactly what our universe consisted of when it was approximately three minutes old. Even the trace elements had begun to appear by three minutes after the colorfully named Big Bang had taken place. And now we find those conditions precisely duplicated right here."
Kirk thought that over … and his eyes widened as he realized what it meant. "Helmsman, full reverse! Get us out of here, Mr. Sulu, and fast! Now!"
"Full reverse." Sulu moved quickly, responding to the urgency in the captain's voice without understanding the reason for it.
"Course, Captain?" Chekhov sounded puzzled.
"Away from … that!" Kirk gestured toward the main viewscreen, which now was showing streaks of exploding gas in the far distance. "Spock, any chance your figures could be wrong?"
"No, Captain, I've checked them twice. We are now retreating from the effects of a primal explosion identical to the one that gave rise to the universe we ourselves are living in."
Kirk didn't like it; he didn't like it at all. "So what we're seeing is a new universe in the process of getting itself born," he said heavily. "It's more than the galaxy that's on fire!"
"What's that?" Uhura exclaimed, startled. "A new universe?"
"Inside our uniwerse?" Chekov protested. "But ve vere here first!"
Without looking away from his viewer, Spock remarked, "You'll find the laws of nature have little respect for squatters' rights, Ensign, if I understand that term correctly. But it's unlikely the new universe had its origins within our own. Ours is only one of countless numbers of universes, all residing in a larger superspace that has been swelling outward for an unimaginably long period of time, a superspace that is ferociously hot and immeasurably dense. To use an analogy, we're but one bubble in a sea of foam—a sea with no surface, and no bottom. And bubbles in that sea of foam occasionally touch."
The bridge personnel all fell silent, depending on their instruments to tell them whether they were about to be burned alive or not. There was nothing in their universe to shield them from the heat generated by a neighboring universe's Big Bang; their only hope was to outrun it.
Spock's image of touching foam bubbles persisted in Kirk's mind. Could one of the bubbles burst the other? Could the bubbles just bounce off each other? Or would the abrasive action of two universes grating against each other wear a hole in both of them, to create an interspatial portal allowing matter and energy to flow from one universe to the other? And if they had to bump into another universe, why couldn't it be a mature one? Why did the collision have to come only three minutes after the other universe's primal explosion, an explosion that spewed out heat intense enough to vaporize every star system, every galaxy, every supercluster …
"Temperature is dropping!" Chekov cried out jubilantly. "Half a degree, one—"
He was interrupted by an outbreak of cheering. "Let's hold off on the celebrating," Kirk said. "All we've done is buy some time." He rose and stepped between the navigator's station and the helmsman's. "Sulu, I want you to match the rate of our retreat as closely as you can to that of the heat front's advance. Chekov, keep feeding him temperature readings. Don't let the front get too close."
"Understood, sir," Sulu said.
The speaker crackled to life. "Ah, Captain," sighed Chief Engineer Scott, sounding much relieved. "Thank ye."
Kirk smiled wryly. "Just for you, Scotty," he murmured and moved over to his first officer's station. He hesitated, looking for the best way to frame his question. "Spock, is there any possibility this is an unnatural phenomenon we're witnessing? That is, could it have been manipulated from this side of the front?"
The Vulcan's right eyebrow rose. "Triggering a primal explosion? Not by any technology known to us, Captain. Do you have some reason to suspect such an unlikelihood?"
Kirk shook his head. "Just a hunch. Never mind the technology—somebody's always developing new technology we don't know about yet. But is it possible in theory?"
In the years they'd served together, Spock had developed a healthy respect for his captain's hunches. And he'd done so in spite of the fact that even the idea of hunches went against the grain of Vulcan thought processes. Inspired guesswork grated against all of Spock's training as well as against his own natural proclivity to reason things out and ignore the insights that sprang from the exercise of instinct and imagination.
But he'd learned the captain didn't depend upon either instinct or logic exclusively, and Spock himself had frequently benefited from Kirk's more oblique approach. So now he put his mind to the problem his commanding officer had posed. "If it's true that every universe is a vacuum fluctuation—then yes, theoretically at least, such a triggering event might be possible. But one would have to develop some sort of gravity manipulator of far greater potency than the antigrav units we use on the Enterprise."
"Why gravity?"
"Gravity is unique, Captain. It is the very warping of space-time that we have encountered in the past. There are moments in time that cease flowing smoothly into the next moment, and there are points in space that fail to connect logically with adjacent points. During these off-moments and at these non-points, space-time itself literally does not exist. But if one of those non-moment-points could be captured gravitationally …"
"Big Bang?"
"Big Bang. But Captain, who would wish to trigger an uncontrollable destructive force of such magnitude?"
"Klingons," Sulu muttered from the helm.
Kirk was thinking. "This heat explosion—it'll go on until it consumes our universe?"
"Unknown, Captain. Since we have no instruments capable of measuring the intensity of the heat or the size of the gaseous mass, it's impossible to say how far out in a concentric circle the original explosion will travel before it begins to cool down. There is this, though—the explosion would travel outward in all directions from a central point. It would not travel in just one direction, toward us."
"So we're getting only a piece of it?"
"I assume so, Captain. We would not be able to outrun it if we were receiving the full blast … we would have been consumed immediately otherwise. That does not mean it is any less dangerous. However, there is always a possibility that this new universe will prove to be smaller than our own, in which case the survival of at least part of our universe would be assured."
"Looking on the bright side, Spock?" Kirk asked sourly. "What if it's larger than ours?"
"Then we are indeed in trouble."
Abruptly Kirk swung around and started pacing. After a moment he stopped as suddenly as he'd started and said, "It all began near the Beta Castelli system. What if someone were determined to wipe out the Zirgosian race? Wouldn't this be a sure-fire way of doing it? No pun intended. This big an explosion got not only Zirgos itself but two of its colony planets as well."
Spock raised an eyebrow. "Earth humans have an expression that covers such an eventuality," the first officer said archly. "I think it is something about shooting off a cannon to kill a gnat."
"Yes, yes, it would be overkill—it would be suicidal, in fact. But maybe something went wrong. Maybe the energy released is greater than what was anticipated. Maybe a lot of things. We need some answers. One thing in our favor—if someone did set out to kill off the Zirgosians, they could have missed a few. Let's see if the Zirgosian colonists can tell us what happened here." Kirk returned to the command chair. "Mr. Chekov! Lay in a course to Holox. Mr. Spock, how much longer before we've learned everything we can learn here?"
The Vulcan peered into his viewer. "The data are repeating now, Captain. We can leave any time."
A few moments later Chekov announced, "Course to Holox laid in. Two point five parsecs."
"Ahead warp five, Mr. Sulu," Kirk said. "Lieutenant Uhura, notify Starfleet where we're going and why. And feed through the data from Mr. Spock's computer—we want them to know all about our three-minute universe. Starfleet has some decisions to make."
"Yes, sir," she said. "Do you think they'll try evacuating this sector?"
"Where would they evacuate to, Lieutenant?" Kirk muttered.
The question hung ominously in the air. The Enterprise hurtled onward toward a small planet called Holox, where questions bigger than that might find their answers.