Death's End (The Three-Body Problem)

by Cixin Liu

  “And thus the life insurance company refused to pay out, although 高 Way had passed through the event horizon in his frame of reference, and should now be dead. But the insurance contract was made within the frame of reference of our world, and from this perspective, it is impossible to prove that 高 Way is dead. It’s not even possible to begin the settlement process. Insurance claims settlement can only occur after the conclusion of an accident, but as 高 Way is still falling toward the black hole, the accident isn’t over, and will never be over.

  “A woman then sued the World Academy of Sciences and demanded that the academy cease all further research on this black hole specimen. By that point, distant observation was unlikely to yield any further results. In order to be useful, future research would have to manipulate the black hole in some way, such as sending experimental objects into the black hole, which would generate massive amounts of radiation, and might disturb space-time in the vicinity of the event horizon. If 高 Way were still alive, these experiments might endanger his life. The woman didn’t win her suit, but for a variety of reasons, research on this black hole stopped, and Lightspeed II was abandoned. Now we can only wait for this black hole to evaporate, which is estimated to take another half century.

  “However, we now know that at least one woman did love 高 Way, though he never knew it. Later, that woman still came here regularly and tried to send radio or neutrino messages at the black hole. She even wrote her love in big letters and posted it against the protective net, hoping that the falling 高 Way could see it. But based on his own frame of reference, he had already passed through the event horizon into the singularity.... It’s a complicated matter.”

  Cheng Xin stared at the blue phosphorescence far away in the darkness. She now knew that there was a man there, a man who was falling forever, at the event horizon where time stopped. Such a man was still alive when viewed from this world, but had already died in his own world.... So many strange fates, and so many unimaginable lives....

  Cheng Xin now felt the flickering black hole was really sending out a message, even more like someone blinking. She pulled her gaze back, feeling as empty in her heart as this ruin in space. Softly, she said to Cao Bin, “Let’s go to Halo City.”

  * Translator’s Note: Like “艾 AA,” “高 Way” is a mixed Chinese-English name (“高” is the surname and pronounced “Gao”).

  Bunker Era, Year 11 Halo City

  As they approached Halo City, Cheng Xin and Cao Bin’s dinghy encountered the Federation Fleet’s blockade line. More than twenty stellar-class warships surrounded Halo City, and the blockade had lasted two weeks already.

  The stellar-class ships were immense, but next to the space city they appeared as tiny skiffs around a giant ocean liner. The Federation Fleet had sent the bulk of their ships to enforce this blockade of Halo City.

  After the two Trisolaran Fleets had disappeared in the depths of space and the Trisolarans lost all contact with humankind, the extraterrestrial threats facing humanity took on an entirely new form. Fleet International, which had been formed to combat the Trisolaran invasion, lost its reason for existence and gradually diminished in relevance until it was finally dissolved. The Solar System Fleet that had belonged to Fleet International became the property of the Solar System Federation. This was the first time in human history where a unified world government controlled the majority of humanity’s armed forces. Since it was no longer necessary to maintain a large space force, the fleet’s size was drastically reduced. After the commencement of the Bunker Project, most of the then-extant hundred-plus stellar-class warships were converted for civilian use. After they were disarmed and their ecological cycling systems removed, they became interplanetary industrial transports for the Bunker Project. Only about thirty stellar-class warships remained in service. Over the last sixty-plus years, no new warships had been built because large warships were extremely expensive. It took the same amount of investment to build two or three stellar-class warships as it did to build a large space city. Moreover, there was no need for new warships. Most of the Federation Fleet’s efforts were devoted to building the advance warning system.

  The dinghy stopped advancing as it received the blockade order. A military patrol boat sailed toward it. It was very small, and from a distance Cheng Xin could only see the glow from its thrusters—its hull could be seen only once it got closer. When the patrol boat docked with the dinghy, Cheng Xin had a chance to look at the uniformed men inside it. Their military uniforms were very different from those of the last era and seemed to hearken to the styling of an earlier age. The uniforms had fewer space-based characteristics and looked more like the uniforms of old Earth-based armies.

  The man who drifted over after the two vessels docked was middle-aged and dressed in a suit. Even in weightlessness, he moved gracefully and calmly, not appearing ill at ease at all in the cramped space that was meant only for two.

  “Good day. I’m Blair, special envoy of the Federation president. I’m about to try, for the last time, to negotiate with Halo City’s city government. I could have talked to you from my ship, but out of respect for Common Era customs, I decided to come here in person.”

  Cheng Xin noticed that even the politicians of this age had changed. The assertive and outspoken mannerisms of the last era had been replaced by prudence, restraint, and politeness.

  “The Federation Government has announced a total blockade of Halo City, and no one is permitted to enter or leave. However, we know that the passenger here is Dr. Cheng Xin.” The envoy nodded at her. “We give you permission to pass and will assist your entrance into Halo City. We hope that you will use your influence to persuade the city government to cease their deranged, illegal resistance, and prevent the situation from deteriorating further. I am expressing the wishes of the Federation president.”

  The special envoy waved his hand and opened up an information window. The Federation president appeared in the window. In the office behind him were the flags of the various cities of the Bunker World, none of which were familiar to Cheng Xin. Nation states had disappeared along with their flags. The president was an ordinary-looking man of Asian descent. His face looked tired, and after nodding a greeting at Cheng Xin, he said, “Envoy Blair is right. This is the will of the Federation Government. Mr. Wade said that the final decision rests with you, an assertion that we do not fully believe. But we wish you the best of success. I’m glad to see you still looking so young. Although, for this matter, perhaps you’re too young.”

  After the president disappeared from the window, Blair said to Cheng Xin, “I know that you already have some understanding of the situation, but I’d still like to give you an overall explanation. I’ll strive to be objective and fair.”

  Cheng Xin noticed that both the envoy and the president spoke only to her, ignoring Cao Bin’s presence, indicating by this omission the deep enmity they felt toward him. As a matter of fact, Cao Bin had already explained the situation to her in detail, and the envoy’s account wasn’t too different.

  After Thomas Wade took over the Halo Group, the company became a key contractor in the Bunker Project. Within eight years, it had grown tenfold and become one of the largest economic entities in the world. Wade himself was not an extraordinary entrepreneur; indeed, he was not even as skilled as 艾 AA at managing the company’s operations. The company’s growth was the result of the new management team he put in place. He personally did not participate in the running of the company and had little interest in it, but much of the profit generated by the company was taken by him and reinvested in the development of lightspeed spaceflight.

  As soon as the Bunker Project began, the Halo Group constructed Halo City as a research center. The Sun-Jupiter L2 Lagrangian point was chosen as the ideal space to set up Halo City in order to eliminate the need for city thrusters and the consumption of resources for position maintenance. Halo City was the only space science city outside the jurisdiction of the Federation Government. While Halo City
was being constructed, Wade also began the construction of the circumsolar particle accelerator, a project that was dubbed “The Great Wall of the Solar System” because it enclosed the Sun in a ring.

  For half a century, the Halo Group devoted itself to basic research for lightspeed spaceflight. Ever since the Deterrence Era, large companies had often engaged in basic research. In the new economic system, basic research could generate enormous profits. Thus, the behavior of the Halo Group wasn’t too unusual. The Halo Group’s ultimate goal of constructing lightspeed spaceships was an open secret, but as long as it stuck to basic research, the Federation Government could not accuse it of violating the law. However, the government continued to be suspicious of the Halo Group, and investigated it multiple times. For half a century, the relationship between the company and the government was basically cordial. Since lightspeed ships and the Black Domain Plan called for much of the same basic research, the Halo Group and the World Academy of Sciences maintained a good collaborative working relationship. For instance, the Academy’s Black Hole Project used the Halo Group’s circumsolar particle accelerator to produce its black hole specimen.

  However, six years ago, the Halo Group had suddenly announced its plan to develop curvature propulsion ships. Such open defiance caused an uproar in the international community. Thereafter, conflict between the Halo Group and the Federation Government never ceased. After multiple rounds of negotiations, the Halo Group promised that when the curvature propulsion drive was ready for trials, the testing site would be at least five hundred AU from the Sun so as to avoid exposing the location of Earth civilization with the trails. But the Federation Government felt that the very development of lightspeed ships was a gross violation of the laws and constitution of the Federation. The danger of lightspeed ships lay not only in the trails, but also in upsetting the new social stability in the Bunker World, a prospect that could not be tolerated. A resolution was passed to authorize the government takeover of Halo City and the circumsolar particle accelerator, and to put a complete stop to the Halo Group’s theoretical research and technical development in curvature propulsion. Thereafter, the Halo Group’s behavior would be subjected to close monitoring.

  In response, the Halo Group declared independence from the Solar System Federation. Thus, the conflict between the Halo Group and the Federation escalated yet further.

  The international community did not take the Halo Group’s declaration of independence too seriously. As a matter of fact, after the commencement of the Bunker Era, conflicts between individual space cities and the Federation Government were not infrequent. For instance, two space cities in the distant city clusters near Uranus and Neptune, Africa II and Indian Ocean I, had declared independence in the past, but nothing had ultimately come of those efforts. Although the Federation Fleet was nowhere near the size it had been in the past, it was still an overwhelming force if applied against individual space cities. By law, space cities were not allowed to possess their own independent armed forces—they could only have limited national guards who had no capacity for space warfare at all. The economy of the Bunker World was also highly integrated such that no individual space city could survive a blockade longer than two months.

  “On this point, I can’t understand Wade either,” said Cao Bin. “He’s a man with foresight, and mindful of the big picture, and he never takes a step without having thought through the consequences. So why declare independence? It seems idiotic to provide the Federation Government with an excuse to take over Halo City by force.”

  The envoy had already left, and the dinghy, now occupied only by Cheng Xin and Cao Bin, continued on course to Halo City. A ring-shaped structure appeared in space ahead, and Cao Bin ordered the dinghy to approach it and decelerate. The smooth metallic surface of the ring reflected the stars as long streaks and distorted the image of the dinghy, bringing to mind the Ring that Blue Space and Gravity had encountered in four-dimensional space. The dinghy stopped and hovered next to the ring. Cheng Xin estimated that the ring’s diameter was about two hundred meters across, and the band about fifty meters thick.

  “You’re looking at the circumsolar particle accelerator,” Cao Bin said, his tone awed.

  “It’s... rather small.”

  “Oh, sorry; I wasn’t clear. This is but one of the coils in the particle accelerator. There are thirty-two hundred coils like this, each about one point five million kilometers apart, forming a large circle around the Sun in the vicinity of Jupiter’s orbit. Particles pass through the center of these coils, where they’re accelerated by the force field generated by the coil toward the next coil, where they’re accelerated again.... A particle might travel around the Sun multiple times during the process.”

  When Cao Bin had spoken to Cheng Xin about the circumsolar particle accelerator in the past, she had always pictured it as a giant doughnut hanging in space. But in reality, to build a solid “Great Wall” around the Sun, even within the orbit of Mercury, would have been an impossible feat approaching the level of God’s Engineering Project. Cheng Xin finally realized that while an enclosed tubular ring was necessary for terrestrial particle accelerators to maintain vacuum, it was not necessary in the vacuum of space. The particles being accelerated could simply fly through space, being accelerated by one coil after another. Cheng Xin couldn’t help turning to look past the coil for the next one.

  “The next coil is one point five million kilometers away, four or five times the distance from the Earth to the moon. You can’t see it,” Cao Bin said. “This is a supercollider capable of accelerating a particle to the energy level of the big bang. Ships are not allowed anywhere near the orbit of the accelerator. A few years ago, a lost freighter drifted into the orbit by mistake and was hit by a beam of accelerated particles. The ultrahigh-energy particles struck the ship and produced high-energy secondary showers that vaporized the ship and its cargo of millions of tons of mineral ore in an instant.”

  Cao Bin also told Cheng Xin that the circumsolar particle accelerator’s chief designer was Bi Yunfeng. Of the past sixty-plus years, he had spent thirty-five of them working on this project and hibernated for the rest. He had been awakened last year, but was much older than Cao Bin now.

  “The old man’s lucky, though. He had worked on a terrestrial accelerator back during the Common Era, and now, three centuries later, he got to build a circumsolar particle accelerator. I’d call that a successful career, wouldn’t you? But he’s a bit of an extremist, and a fanatic supporter of Halo City independence.”

  While the public and the politicians opposed lightspeed ships, many scientists supported the effort. Halo City became a holy site for scientists who yearned for lightspeed spaceflight and attracted many excellent researchers. Even scientists working within the Federation scientific establishment often collaborated with Halo City—openly or in secret. This caused Halo City to be on the cutting edge in many areas of basic research.

  The dinghy left the coil and continued its voyage. Halo City was straight ahead. This space city was built along the rarely seen wheel plan. The structure provided strength but had little interior volume, lacking “world-sense.” It was said that the inhabitants of Halo City did not need world-sense, because for them, the world was the entire universe.

  The dinghy entered the axis of the giant wheel, where Cheng Xin and Cao Bin had to enter the city through an eight-kilometer spoke. This was one of the least convenient aspects of a wheel plan. Cheng Xin was reminded of her experience more than sixty years ago at the terminal station of the space elevator, and she thought about the great hall that reminded her of an old train station. But the feeling here was different. Halo City was more than ten times larger than that terminal station, and the interior was rather spacious and didn’t look run-down.

  On the escalator of the spoke, gravity gradually set in. By the time it reached 1G, they were in the city proper. The science city was made up of three parts: the Halo Academy of Sciences, the Halo Academy of Engineering, and the Cont
rol Center for the circumsolar particle accelerator. The city was in fact a ring-shaped tunnel thirty-some kilometers in length. Although it wasn’t nearly as open or spacious as the large, hollow shells of other cities, one didn’t feel claustrophobic, either.

  Cheng Xin didn’t see any motor vehicles in the city at first. Most residents got around on bicycles, many of which were parked on the side of the road for anyone to use. But a small convertible motor vehicle came to pick up Cheng Xin and Cao Bin.

  Since the simulated gravity in the ring pulled toward the outer rim, the city was built along that surface. A holographic image of blue sky with white clouds was projected onto the inner rim, which made up some for the lack of world-sense. A flock of twittering birds flitted overhead, and Cheng Xin noticed that they were not holograms, but real. Here, Cheng Xin felt a sense of comfort that she had not experienced in the other space cities. There were plenty of trees and lawns everywhere. None of the buildings was very tall. Those belonging to the Academy of Sciences were painted white, while those belonging to the Academy of Engineering were painted blue, but each building was unique. The delicate buildings were half-hidden by the green plants, and made her feel as though she were on a college campus.

  Cheng Xin saw an interesting sight on her drive. There was a ruin like an ancient Greek temple. On a stone platform stood a few broken Greek columns covered with climbing ivy. In the middle of the columns was a fountain shooting a column of limpid water merrily into the sunlight. A few casually dressed men and women were leaning against the columns or lying on the lawn next to the fountain, lazing about comfortably. They seemed not to care that the city was under siege by the Federation Fleet.