Текст книги "Seveneves"

Автор книги: Neal Stephenson

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Текущая страница: 16 (всего у книги 57 страниц) [доступный отрывок для чтения: 21 страниц]

Ivy had failed, in the eyes of the Russians and of many in the NASA hierarchy, by not taking a firmer hand with Sean Probst. That wasn’t the only complaint they had about her, but it was the one around which everything else had crystallized. Once everyone had begun to see her as the overly book-smart, well-meaning but week-kneed technocrat, everything she did had been viewed through that lens. Dinah’s rescue of Tekla had been examined under what doctors called “the retrospectoscope” and been deemed a failure on Ivy’s part to enforce necessary discipline. New arrivals to the Cloud Ark, prepped by Internet comment threads and television pundits to see Ivy as a weak leader, began finding ways to make that into a self-fulfilling prophecy. The success of the Bolo One test, which in other circumstances might have bolstered her, came to be viewed as an almost literal handoff of authority from Ivy to Markus. Presented with some choice opportunities to say supportive things about Ivy, Ulrika had declined to do so, and it wasn’t clear whether that was mere absentmindedness or an attempt to cement her position as number two.

In any case it was all squarely in the realm of Politics. Doob had avoided bringing it up around Ivy, not wanting to raise an awkward topic, and so he found it horrifying when Luisa went straight to it, and fascinating when Ivy laughed.

People.

“What is on your docket for today?” Luisa asked.

“Looking at spreadsheets,” Ivy said. “Trying to figure out the consequences of losing Kourou.”

“That is one monkey wrench we didn’t need,” Doob said.

“To be sure,” Ivy said, “but in a weird way, I’m almost . . .” and she trailed off.

“Glad? Relieved?” Luisa guessed.

“It’s like the starting gun finally went off,” Ivy said. “We’ve been prepping for this for almost two years. Awaiting the disaster. Waiting for all hell to break loose. And now it has. Just not in the way we expected.”

“What were you expecting?” Luisa asked.

“That we’d get hit by a bolide and take a lot of casualties,” Ivy said. “Instead something unexpected happened. Which is good training, in a way.”

“How’s your sweetie?” Luisa asked.

Doob shut off his treadmill and unbuckled the padded belt that connected him to the bungee cords. He was the only man in a room where two women were talking about one of their boyfriends. He knew his cue to make himself scarce.

“He went dark on me two days ago,” Ivy said. “Which means he’s probably underwater.”

“I’m sure he’ll pop up for air soon,” Luisa said. “Can he send email when the submarine is submerged? I know nothing about it.”

“There are ways—” Ivy said, but by that time Doob was floating out of the module.

He made his way aft down the Stack to H2, then clambered down a spoke into the rotating torus T2, which Rhys Aitken had been sent up to build. Gravity in it was one-eighth of Earth-normal. Originally designed as a space hotel for tourists, it had never been quite up to the requirements placed on it by the Cloud Ark project, and so Rhys had been put in charge of building a larger one, concentric with T2, and inevitably called T3. Never one to rest on his laurels, he had invented a completely new system for building it. Unsurprisingly to Dinah, this had consisted of assembling a long loop of high-tech chain and setting it in motion around T2, then adding stuff onto it incrementally. It spun around the same hub at the same RPMs, but because it was bigger, its simulated gravity was a little stronger, about equal to that on the moon. It housed the closest thing the Cloud Ark had to a bridge: a segment of T3 about ten meters long, used by Markus as his headquarters. Attempts had been made to dignify it with names such as “command center,” but at the end of the day it was just an upgraded version of the Banana: a conference room with some television screens and power feeds for tablet computers.

Izzy didn’t have a helm. It didn’t have controls as such. No big wheel to turn for steering it through space, no throttle. Just a bewildering assortment of thrusters controlled through a web interface that could be pulled up on any tablet, provided you had the right password. So, the control room, the bridge, the command center could be anywhere. People had ended up calling the room Markus had chosen the Tank. Adjoining it on one side was a smaller office that served as Markus’s sanctum sanctorum. Next to the Tank on the other side was a larger room with a number of cubicles, bizarrely like a suburban office park, where people supporting Markus could sit and work. It had been called the Cube Farm for about ten minutes and was now simply called the Farm. Adjoining the Farm on the other side was a maze of cramped rooms where one could obtain food or use the toilet.

Doob had found that the Farm was frequently the least crowded place on Izzy, just because it didn’t occur to people to go there. The gravity was good for his bones and the availability of coffee and toilets were obvious pluses. So he tended to swing by a couple of times a day, get a beverage, see what was happening, and, if things were quiet, grab a vacant carrel and do some work.

He got there at about dot 2. The walls of the Farm, and of the adjoining Tank, were lined with projection screens, known in NASA-speak as Situational Awareness Monitors. They acted as windows onto various parts of the Cloud Ark and its environs. One was showing the Earth below them, another the cloud of debris that had been the moon, another the approach of a supply module from Cape Canaveral getting ready to dock, another the progress of a bolo coupling drill being conducted by some newly arrived Arkies several kilometers aft. Some just displayed statistics and bar charts. The biggest, at the far end of the Farm, was occupied mostly by a grainy video feed from some part of the Earth where it was dark. A label superimposed at the bottom identified it as KOUROU, FRENCH GUIANA. Once Doob had that information to work with, he could make out the general scene: a galaxy of lights from the thousands of boats that had joined the “People’s Justice Blockade,” and in the background the much more orderly precincts of the spaceport, where an Ariane stood on one pad and a Soyuz on the other, ready to launch, but still unable to do so because of the threat of those Stingers.

The silhouette of a military chopper passed between the camera and the lights of the launch complex.

This was a twenty-four-hour news network. The crawl running across the bottom of the screen was being updated every few minutes by the current BFR, or Bolide Fragmentation Rate, which had started out at zero on A+0 and been climbing ever since then; this was the number that, when it caromed through the bend in its exponential curve, would signal the onset of the White Sky. The networks had been tracking it obsessively. There was an app for it. A bar in Boston had begun offering end-of-the-world drink specials whenever the BFR broke through certain milestones, and the promotion had been copied widely.

Above the crawl was a smaller video inset showing an empty lectern in the White House Briefing Room. Apparently they were expecting some sort of announcement.

Doob sat in one of the carrels, spent a few minutes checking email, and then tried to get back to his main task, which was to write a memo about the distribution of metal-rich moon fragments, how they might be reached and exploited, and why that should be interesting to the management of the Cloud Ark. He was only a few sentences in, however, when movement on the big Situational Awareness Monitor caught his eye, and he looked up into the eyes of the president of the United States.

She was staring into the camera, or rather the teleprompter screen in front of the camera, and delivering some sort of terse announcement. She looked pissed off.

Pinned to her lapel was a loop of ribbon. All the important people had been wearing these for the last few weeks, and they had become popular among the hoi polloi as a gesture of solidarity with the mission of the Cloud Ark. Selecting the color scheme had consumed resources equivalent to the gross domestic product of a medium-sized country. They had settled on a thin red line down the center, symbolizing the bloodline of the human race, flanked by bands of white, symbolizing starlight, flanked by bands of green, symbolizing the ecosystem that would keep the Arkies alive, flanked by bands of blue, symbolizing water, and, finally, edged by bands of black, symbolizing space. The discussion had been as lively as the results were complicated. Black symbolized death to Westerners, white symbolized it to Chinese, and so on. This design offended everybody. It had gotten loose on the Internet as the “official” ribbon design even though the commission charged with designing it had become hopelessly deadlocked and was still evaluating twelve different candidate designs submitted by schoolchildren from around the globe. Factories in Bangladesh had been repurposed to hurl this stuff out by the linear kilometer, they had shown up in kiosks and souvenir shops from Times Square to Tiananmen Square, and the world’s leaders had bowed to the verdict and begun wearing them. The president had attached hers using a lapel pin consisting of a simple disk of turquoise rimmed in platinum. The blue disk on the white field was meant to echo Crater Lake amid the snows of November; it was a visual emblem of the Crater Lake Accord, and the closest thing that the Cloud Ark had to a flag.

The sound had been turned down, so Doob couldn’t hear what J.B.F. was saying, but he could guess it well enough, and a few seconds later the highlights began to show up in the crawl at the bottom of the screen. The so-called People’s Justice Blockade was no grass-roots movement but an operation planned and carried out by the Venezuelan government. It was a reprehensible political stunt that was actively interfering with the all-important building of the Cloud Ark. It was not true, as some had been whispering and the Venezuelan president was now openly saying, that the White Sky was a hoax. The blockade was not, as its sympathizers would have you believe, a peaceful civil disobedience protest; armed intruders had begun landing on the beaches of French Guiana a few hours ago, and were now being held at bay by the French Foreign Legion, bolstered by a multinational force including United States and Russian marines. Doob, doing his best to tune it out, couldn’t defeat the irrational feeling that J.B.F. was staring directly at him: a feeling he had come up here partly to get away from.

One of the PR flacks down in Houston reached him over a video chat link that Doob had not had the presence of mind to disable. He talked Doob into spending the next hour writing a little homily about how everyone down on Earth needed to unite behind the all-important mission of the Cloud Ark, and detailing how the Kourou blockade was affecting that. Doob wanted in the worst way to tell this guy to get lost, but he had a soft spot for people who had only three weeks to live.

Doob called Ivy—for Izzy had its own cell-phone system now—and got her to supply a few hard quotable numbers, which he rounded off and typed into his script. He then devoted a minute to psyching himself up to adopt the Doc Dubois persona. Formerly the ruin of his first marriage, the basis of his livelihood, and his ticket to the Cloud Ark, Doc Dubois was a person he rarely had to be anymore. That guy seemed as dated as a character from a 1970s television serial. Getting into the persona was nearly as cumbersome as donning a space suit. It required an extra cup of coffee with sugar. When he felt he was ready, he turned on his tablet’s video camera, identified himself as Doc Dubois, greeted the people of Earth, and read his little script.

When he was finished, he emailed the file down to Houston. Then he tried to go back to his memo, but he became distracted when the Situational Awareness Monitor flashed up a red BREAKING NEWS banner and began to show footage of indistinct flashes against a dark background. Some sort of hostilities had broken out on the ground in French Guiana, between the perimeter of the spaceport and the beach. The French Foreign Legion was participating in what might be the last battle ever fought. But the television news cameras couldn’t get anywhere near the action, so the coverage mostly consisted of journalists interviewing each other about how little they knew.

In the middle of all that, the flack in Houston got back to him and asked if he could please relocate to a part of Izzy where zero gravity prevailed, and rerecord the little pep talk. Conspiracy theorists were saying that the Cloud Ark didn’t really exist and that it was actually just a bunch of movie sets in the Nevada desert. Whenever they saw video from parts of the space station with simulated gravity, they cited it as evidence, and added millions of friends and followers to their social media profiles.

Doob said he’d see what he could do, and departed from the Farm. Nothing was going on here anyway; Markus wasn’t around at the moment. He ascended a spoke to H2 and thus entered zero gravity.

H2 had been the aft-most piece of the Stack—the train of modules that ran up Izzy’s central axis—until several weeks ago when the Caboose had been launched up from Kourou and mated to its aft end. The main purpose of the Caboose was to house a large rocket engine, burning hydrogen and oxygen, which would do most of the work of boosting Izzy’s orbit. It wasn’t possible to extend Izzy any farther back because, beyond that point, anything tacked onto it would no longer reside safely within Amalthea’s protective envelope. And indeed there had been long discussions of contingency plans for the case where the Caboose took a hit and its engine was destroyed.

Putting his back to the Caboose, Doob began to drift forward up the Stack. H2 led to H1, which led in turn to the old Zvezda module. This had formerly sported small photovoltaic panels to its port and starboard sides, but these—like most of Izzy’s solar panels—had been folded up and removed to make space for other construction. During an intermediate stage of the Arkitects’ labors, power had come not from photovoltaics but from little nukes, the same as those on the ark-lets. These still protruded from attachment points all over the space station, aglow with red LEDs meant as a warning to spacewalkers and pilots. And they still produced a significant amount of power and served as a valuable backup. But most of the station’s power now came from a full-fledged nuclear reactor, adapted from those used on submarines, which was mounted on a long stick that projected to nadir from the Caboose. There were a number of reasons why a big power plant might be needed, but the most important of these was to produce rocket propellant by splitting water into hydrogen and oxygen. And this explained why the reactor was where it was. The Caboose housed the big boost engine that was Izzy’s largest consumer of propellant. And it was also the central nexus of the Shipyard complex, where smaller vehicles could be assembled from a kit of parts. Once assembled, they too would need propellant.

Zvezda’s forward terminus was a docking station with ports to the zenith and nadir sides, where scientific laboratories had been connected back before Zero. This tradition had been preserved, in a way, by turning that docking site into Grand Central station for work related to the Cloud Ark’s primary function of preserving the Earth’s heritage. If Doob went “up” in the zenith direction, he entered a long module whose main purpose was to support multiple docking ports where other vessels could be, and had been, attached. In general these were crammed with priceless cultural relics, but some of them also supported server farms where digital recordings were stored. Certain relics were easier than others to send into space; the Magna Carta had made it up here, but Michelangelo’s David was still on the ground. Considerable effort had gone into sealing up heavy relics in “everything-proof vaults” and leaving them on the bottom of the oceans, or in deep mine shafts, but Doob had long since lost track of the progress of that undertaking.

If instead Doob went “down” in the nadir direction, he entered a similar three-dimensional maze of modules. Most of these were devoted to storage of genetic material: seeds, sperm samples, eggs, and embryos. All of these needed to be kept cold, which in space wasn’t too difficult; it was primarily a matter of shielding the storage containers from sunlight, which could be done with a featherweight piece of metallized Mylar film, and secondarily a matter of just preventing the warmth of surrounding objects from seeping into the samples. Doob always paused when passing by that hatch. He was not a spiritual man, but he could not humanly ignore the fact that his potential fourth child, the embryo he and Amelia had created, was in there somewhere. Along with tens of thousands of other fertilized embryos waiting to be thawed out and implanted in human wombs.

He passed into Zarya, which was the next module forward in the Stack. Having been mildly spooked by thinking about embryos, he now had a vague intention of going into the Woo-Woo Pod to rerecord his video. This was a spherical inflated structure, ten meters in diameter, with several large domed windows. It was accessed from Zarya via a hamster tube on the nadir side, so it was aimed at the Earth. Ulrika Ek had drawn the ire of every religious group on the planet by refusing to provide separate places of worship for every single one of them in the Cloud Ark. Instead of sending up a church pod, a synagogue pod, a mosque pod, etc., she had provided this one structure, which was something like the interfaith chapel at an airport in that all the different religions had to share it. Internal projectors would display crosses, Stars of David, or what have you on its interior surfaces, depending on what sort of service was happening there at the moment. It had a long, cumbersome, politically correct name, but someone had dubbed it the Woo-Woo Pod and the name had stuck.

That someone paused for a few moments at the entrance to the hamster tube that led to it, and detected the haunting tonalities of the Muslim call to prayer. Too bad. He’d thought that the Pod might actually be a good backdrop for the message he was meant to deliver. But he would have to find another place. Directly across, a hatch led into the rambling group of modules that served as Izzy’s sick bay. This had consumed much of the space formerly used by the port-side solar panels. At its farthest extremity, blocked off by an insulated hatch, was the surplus module that had been used as Izzy’s morgue and graveyard since the first Scout launch on A+0.29, when two of the cosmonauts had been found dead on arrival. The terrific mortality rate of those first few weeks had half filled this thing with freeze-dried bodies. Since then, fourteen more had died of various causes: one of a subarachnoid hemorrhage that could just as well have happened on the ground, one of a heart attack, two of suicide, two of equipment failure, four just a few days ago in the sudden depressurization of an arklet struck by a bolide. Those, plus the dead stowaway, were all stored in the morgue. The whereabouts of the other four fatalities could only be guessed at. One was a spacewalker who had simply disappeared. The remaining three had been sleeping in a Shenzhou spacecraft docked to the end of a hamster tube, which had been struck by a bolide the size of a coffee table and essentially vaporized. Performing his video surrounded by free-floating, freeze-dried corpses would shut up the “truthers” but otherwise had nothing to recommend it.

On the opposite “wing,” where the starboard solar panels had once operated, was a roughly symmetrical arrangement of modules used by the General Population for miscellaneous living and working purposes. These connected to the Stack mostly by way of the old American modules: Unity, Destiny, and Harmony. Consequently, there tended to be a lot of humans flying around in those modules, getting from one part of the space station to another or clustering for the equivalent of watercooler chats.

Beyond Harmony was Node X. NASA liked to give these things names by organizing contests for schoolchildren, which was how Harmony had ended up being called that, but the Node X naming project had been defunded before achieving a result, so Node X it was. It had never really found a purpose, so it had become the place where the life sciences gear was stored—or rather the central connector to which the life sciences modules had docked, one by one, as they had been sent up. This part of the Stack was very close to Amalthea, and accordingly well protected, and so it was a good place to store that irreplaceable equipment during the wait for it to become useful. Doob poked his head into several of those modules, hoping to encounter Moira, then remembered that, London girl that she was, she was on third shift, not due to wake up for another three hours—it was about dot 5, predawn in London.

Beyond Node X was the considerably larger SCRUM, which was literally bolted onto Amalthea at its forward end. So it was the forward-most thing in the Stack. Before Zero it had been nearly deserted. Since then it had grown and developed into the space-based headquarters of Arjuna Expeditions. People called it the Mining Colony. They had plugged in more modules until all of its ports were occupied, and then they had begun to attach scaffolding and additional modules—rigid and inflatable—directly to the aft surface of Amalthea.

It was around now that Doob forgot entirely about the task that the flack in Houston had assigned him, and decided to hang out here for a little while and see what was going on. By all rights this ought to have been his favorite part of the Cloud Ark. Yet he never visited, because coming here put him in mind of politics, which stressed him out and distracted him. His earlier conversation with Luisa had brought home to him, however, that ignoring politics might not be the wisest long-term strategy. He might not care about politics, but politics cared about him. And besides, the people who actually worked here—people like Dinah—were terrific. He had no problem with them personally. He should spend more time with them. Right now he was three hours short of the end of his waking cycle. This was the rough equivalent of mid-evening. Time to kick back and grab a beer. No better people to do that with than miners.

The Mining Colony was political for two reasons. First of all and most obviously, it had originated from a public-private partnership of which the private half was Arjuna Expeditions—Sean Probst’s company. Which had been all well and good until he had burst into H2, raised hackles, and ruffled feathers all over the place. Secondly, but much more murkily, there seemed to exist some kind of fundamental disagreement about what the Cloud Ark was supposed to be and how it was expected to develop in the years following the White Sky. Was it going to stay in place, i.e., remain in the same basic orbit? Transition to some other orbit? Would it stay together as a compact swarm or spread out? Or would it split up into two or more distinct swarms that would try different things? Arguments could be made for all of the above scenarios and many more, depending on what actually happened in the Hard Rain.

Since the Earth had never before been bombarded by a vast barrage of lunar fragments, there was no way to predict what it was going to be like. Statistical models had been occupying much of Doob’s time because they had a big influence on which scenarios might be most worth preparing for. To take a simplistic example, if the moon could be relied on to disassemble itself into pea-sized rocks, then the best strategy was to remain in place and not worry too much about maneuvering. It was hard to detect a pea-sized bolide until it was pretty close, by which time it was probably too late to take evasive action. A strike from a rock that size would perforate an arklet or a module of Izzy, but not destroy it; people might get hurt and stuff might get broken, but the worst case was that a whole module or arklet would be destroyed with the loss of a few lives. On the other hand, in the more likely scenario where the Hard Rain included rocks the size of cars, houses, and mountains, detection from a distance would be easier. Evasive action would be not only feasible, but obligatory.

Or at least it was obligatory for Izzy. For a single arklet, it didn’t matter whether it got struck by a rock the size of a baseball or one the size of a stadium. It was equally dead in either case. Izzy, on the other hand, could survive the first of these with the loss of a few modules, but the second would obliterate the whole space station and probably lead to the slow death of the entire Cloud Ark. Izzy had to be capable of maneuvering out of a large bolide’s path.

“Maneuvering” conjured images, in nontechnical minds, of football players weaving among their opponents in an open field. What the Arkitects had in mind was considerably more sedate. Izzy would never be agile. Even if she were, maneuvering in that sense would waste a lot of fuel. If an incoming rock big enough to destroy her were detected long enough in advance, she could get out of its path with a thruster burn so deft that most of her population would not even know it had happened. So, the optimistic view of how this was going to work was that Izzy would remain in something close to her current orbit, with occasional taps on the thrusters that would move her out of the way of any dangerous bolides hours or days in advance of the projected collision. The analogy was made to an ocean liner gliding through a field of icebergs, avoiding them with course changes so subtle that the passengers in the dining room wouldn’t even see the wine shifting in their crystal stemware.

There was, inevitably, a more pessimistic vision in which Izzy was more like an ox blundering across an eight-lane highway in heavy traffic. Depending on who was making the analogy, the ox might or might not be blindfolded and/or crippled.

Which of these analogies was closer to the truth boiled down to a statistical argument in which were braided together assumptions about the range and distribution of bolide sizes, the amount of variation in their trajectories, how well the long-range radars worked, and how good the algorithms were at sorting out all the different bogeys and deciding which ones were dangerous.

Somewhere in the middle, between the ocean liner and the blind ox, was the football player pushing the wheelbarrow.

It didn’t matter whether “football” for you was soccer or the American sport played by men in helmets. In either case you were meant to envision a player trying to weave a path downfield among defenders. A skilled player could succeed at this when running unencumbered but would fail if obliged to push a wheelbarrow with a boulder in it. The boulder, of course, was Amalthea, and the wheelbarrow was the asteroid mining complex that had been constructed around it. If this analogy were the one closest to the truth, then the wheelbarrow would have to be abandoned.

The image was sufficiently clear, and sufficiently alarming, that some had begun to argue for ditching Amalthea as far back as Day 30. More levelheaded analysts pointed out that if the ocean liner analogy applied, there was no need to take such drastic action, and if Izzy were a blind, crippled ox on a freeway, there was no point anyway.

Doob had his own bias, a bias frankly rooted in a certain frozen embryo, which was that the Mining Colony should be preserved at all costs. When he tried to filter out that bias and to look at the models and the data in a completely objective way, he concluded that the jury was still out. So, technical discussions of the matter tended to be unproductive, except insofar as they revealed the biases that the participants had brought into the room with them. And here was where it started to get difficult for him personally, because he couldn’t understand why anyone would harbor a bias different from his own. Why would anyone not want to keep the Mining Colony? What were they thinking? How could the Cloud Ark, and the human race, have a future without those tools and capabilities?

In any case the controversy had ramifications that extended into many seemingly mundane aspects of the Cloud Ark program. If Izzy was going to maneuver with Amalthea attached to it, then the structure holding the rock to the space station needed to be strong. To put it another way, the stronger it was, the more heroic maneuvers could be achieved without breaking it. The ability to perform such maneuvers made the survival of Izzy more likely, and so requests for additional structural work had a kind of self-justifying force. Conversely, a weaker structure limited maneuvering ability and increased the odds that they would have to jettison the Mining Colony in order to survive. And why dump scarce resources into beefing up a subassembly that was going to be abandoned anyway? A similar dynamic obtained in the case of propellant. More of it was needed to maneuver an Izzy with a big rock on it, which meant less of it for the arklets, limiting their autonomy and operating range. Thus physics drove politics to the extremes of “ditch the rock now” or “keep the rock at all costs.”

The Mining Colony now comprised eight modules, plus an inflatable dome that was attached directly to the asteroid. The robots had spent several weeks welding a three-meter-diameter ring onto a circular groove that they had prepared on Amalthea’s surface. The inflatable had been mated to it about a hundred days ago, and filled with breathable atmosphere. It was not quite a shirtsleeves environment, since the asteroid was cold and chilled the air in the dome. And many of the robots’ normal operations produced gases that were toxic, or at least irritating. But that wasn’t the point of having a dome. The point was to recapture and reuse the gases used by the robots’ plasma torches, making it possible to excavate and reshape the asteroid much faster than had been possible in the early days, when all of those gases had leaked away into space. Since then Dinah’s complement of robots had been heavily reinforced by newer and better versions of the same basic models that had been shipped up from Earth. And Dinah herself was now managing a crew of twelve, working in shifts around the clock. They’d been expanding the tunnel she had carved into the asteroid long ago to protect her circuit boards from cosmic rays, making slow progress on hollowing out the asteroid, carrying bits of metal away to a bigger and better smelter that was turning them into steel. Since there was no real place for it in Izzy’s master plan, they’d been putting that steel to work in reinforcing Amalthea’s structural connection to Izzy, feeding back into the political argument again.