The Dark Forest (31 page)

“Ah, Beihai, there’s another important thing,” Chang Weisi said as Beihai was about to pick up his carry-on. “The CMC has studied the report we submitted on sending political cadres to the future as reinforcements, and the brass feel that conditions are still premature.”

Zhang Beihai squinted, as if warding against a glare, though they were still in the space plane’s shadow. “Commander, my feeling is that we ought to keep the entire four-century period in mind when making plans, and to be clear about what’s urgent and what’s important.… But please be assured that I won’t say that in any formal setting. I know very well that our superiors are considering the bigger picture.”

“The higher-ups have affirmed your long-term thinking and commend you for it. The document stresses one point: The plan to send reinforcements to the future has not been denied. Research and planning will continue, but present conditions are still premature for execution. I feel—and this is of course my personal opinion—that we need additional qualified political cadres in our ranks to lessen the current work pressures before we can consider it.”

“Commander, surely you are aware of what ‘qualified’ means in the context of the Space Force Political Department, and what the basic requirements are. Qualified people are becoming increasingly rare.”

“But we’ve got to look forward. If there are breakthroughs in the two key technologies of phase one, the space elevator and controlled fusion—and there’s hope of this in our lifetimes—then things will be better.… Okay then. Off with you.”

Zhang Beihai saluted him and then stepped onto the stairs. His first feeling upon entering the cabin was that it wasn’t much different than a civilian airliner, except the seats were wider, having been designed to accommodate space suits. During the first flights of the space plane, all passengers had to wear space suits as a precaution, but there was no need for that now.

He had a window seat, and the seat immediately next to his was also occupied. A civilian, judging from his clothing. Zhang Beihai nodded to him in greeting before turning his attention to fastening the seat’s complicated safety belt.

There was no countdown.
High Frontier
started its air engines and began taxiing. Because of its weight, it spent longer on the ground during takeoff than an ordinary plane, but at last it lifted ponderously off the ground and embarked on its voyage into space.

“This is the thirty-eighth flight of the space plane
High Frontier
. The aviation phase has started and will last approximately thirty minutes. Please do not unfasten your safety belts,” said a voice over the intercom.

As he watched the ground recede through the cabin window, Zhang Beihai’s thoughts turned to the past. During training to become a carrier captain, he had completed naval aviation pilot training and had passed the level three fighter pilot exam. On his first solo trip he had watched Earth recede like this and suddenly discovered that he loved the sky even more deeply than the ocean. Now, his longing was for the space beyond the sky.

He was a man destined to fly high and fly far.

“Not much different from civil aviation, you think?”

He turned to see the speaker sitting in the next seat, and recognized him at last. “You must be Dr. Ding Yi. I’ve been wanting to meet you.”

“But it’s going to get rough in just a little bit,” the man said, ignoring Zhang Beihai’s salutation. He went on, “The first time, I didn’t take off my glasses after the aviation phase, and they crushed my nose with the weight of a brick. The second time I took them off, but then they flew off after gravity went away. It wasn’t easy for the guy to find them for me in the air filter in the plane’s tail.”

“I thought you went up on the space shuttle the first time. On TV, that didn’t look like a very nice trip,” Zhang Beihai said with a grin.

“Oh, I’m talking about taking the space plane. If we count the shuttle, then this is my fourth time. On the shuttle, they took away my glasses before takeoff.”

“Why are you going to the station this time? You’ve just been put in charge of a controlled fusion project. The third branch, isn’t it?”

Four branches had been set up for the controlled fusion project, each pursuing a different direction of research.

Restrained by the safety belt, Ding Yi lifted a hand to point at Zhang Beihai. “You study controlled fusion and you can’t go to space? You sound the same as those guys. The ultimate goal of our research is spaceship engines, and the real power held by the aerospace industry today remains to a large degree in the hands of the people who used to make chemical rocket engines. They’re saying now that we’re just supposed to devote ourselves to controlled fusion on the ground, and that we basically have no say in the general plan of the space fleet.”

“Dr. Ding, your views are identical to mine.” Zhang Beihai loosened his safety belt and leaned over. “For a space fleet, space travel is an entirely different concept from chemical rocketry. Even the space elevator is different from today’s aerospace techniques. But right now the aerospace industry of the past still holds too much power. Its people are ideologically ossified and legalistic, and if things continue, there will be all kinds of trouble.”

“There’s nothing to be done. At least they’ve managed to come up with this in the course of five years.” He pointed around him. “And this gives them the capital to squeeze out outsiders.”

The cabin intercom started up. “Please take care: We are approaching an altitude of twenty thousand meters. Due to the thin atmosphere we will now be flying through, there may be sharp drops in altitude that will produce momentary weightlessness. Please do not panic. Again, please keep your safety belts fastened.”

Ding Yi said, “But our trip to the station this time is unrelated to the controlled fusion project. It’s to recover those cosmic ray catchers. That’s some expensive stuff.”

“The space-based high-energy physics research project has been stopped?” asked Zhang Beihai, retightening his safety belt.

“It’s stopped. Knowing that there’s no need to waste effort in the future counts as a kind of success.”

“The sophons won.”

“That’s right. So humanity only has a few reserves of theory remaining: classical physics, quantum mechanics, and a still-embryonic string theory. How far their applications can be pushed is up to fate.”

High Frontier
continued to climb, its aviation engines rumbling under the strain as if it were struggling up a tall mountain, but there were no sudden drops. The space plane was now approaching thirty thousand meters, the limit of aviation. Looking out, Zhang Beihai saw that the blue of the sky was fading as it got dark, even though the sun became even more dazzling.

“Our current flight altitude is thirty-one thousand meters. The aviation phase is complete and the spaceflight phase is about to begin. Please adjust your seats according to the illustration onscreen to minimize the discomfort of hypergravitation.”

Then Zhang Beihai felt the plane rise gently, as if it had discarded a burden.

“Aircraft engine assembly separated. Aerospace engine ignition countdown: ten, nine, eight…”

“For them, this is the real launch. Enjoy,” Ding Yi said, and closed his eyes.

When the countdown reached zero, there was a huge roar, as if the entire sky outside was shouting, and then hypergravity came like a giant, slowly tightening fist. With effort, Zhang Beihai twisted his head to look out the window. He was unable to see the flames spurting from the engine, but a wide swath of the rarified air of the sky outside was painted red, as if
High Frontier
was floating through a sunset.

Five minutes later, the boosters detached, and after another five minutes of acceleration, the main engine cut off.
High Frontier
had entered orbit.

The giant hand of hypergravity suddenly let go and Zhang Beihai’s body bounced back from the depths of his seat. Although the restraint of his safety belt kept him from floating away, to his senses he and the
High Frontier
were no longer parts of the same whole. The gravity that had once bonded them together was gone, and he and the plane were now flying in parallel paths through space. Out the window were the brightest stars he had ever seen in his life. Later, when the space plane adjusted its attitude, the sun streamed in through the windows and myriad points of light danced in its beams: dust particles that had weightlessly taken to the air. As the plane gradually rotated, he saw the Earth. From this low orbital position he couldn’t see the entire sphere, only the arc of the horizon, but he could clearly make out the shapes of the continents.

Then the starfield, that long-awaited sight, finally came into view, and he said in his heart,
Dad, I’ve taken the first step.

*   *   *

For five years, General Fitzroy had felt like a Wallfacer in the actual sense of the word, in that the wall he faced was the big screen with the image of the stars between Earth and Trisolaris. At first glance it was entirely black, but closer inspection of the screen revealed points of starlight. He had grown so well acquainted with those stars that when he had attempted to sketch their position on a piece of paper at a dull meeting the previous day and compared it to the actual photo afterward, he was basically correct. The three stars of Trisolaris lying inconspicuously at the center looked like a single star in the standard view, but every time he magnified them he found that their positions had changed. This chaotic cosmic dance so fascinated him that he forgot what he was looking for in the first place. The brush that had been observed five years ago had gradually faded away, and no second brush had appeared. The Trisolaran Fleet left a visible wake only when it passed through interstellar dust clouds. Earth’s astronomers had verified through observations of the absorption of background starlight that during the fleet’s four-century-long voyage through space, it would pass through five of them. People dubbed these “snow patches” after the way that passersby left tracks on snowy ground.

If the Trisolaran Fleet had maintained a constant acceleration over the past five years, it would pass the second snow patch today.

Fitzroy arrived at the Hubble II Space Telescope Control Center early. Ringier laughed when he saw him. “General, why do you remind me of a child who wants another present so soon after Christmas?”

“Didn’t you say that they would cross the snow patch today?”

“That’s right, but the Trisolaran Fleet has only traveled 0.22 light-years, so it’s still four light-years away. Light reflected from its passage through the snow won’t reach Earth for another four years.”

“Oh, I’m sorry. I forgot about that,” Fitzroy said with an embarrassed shake of his head. “I really wanted to see them again. This time, we’ll be able to measure their speed and acceleration at the time of passage, and that’s very important.”

“I’m sorry. We’re outside the light cone.”

“What’s that?”

“It’s what physicists call the cone shape that light describes as it emanates along the time axis. It’s impossible for people outside the cone to comprehend events taking place inside the cone. Think about it: Information about who-knows-how-many major events in the universe is flying toward us right now at the speed of light. Some of it has been traveling for hundreds of millions of years, but we’re still outside the light cones of those events.”

“Fate lies within the light cone.”

Ringier considered this, then gave him an appreciative nod. “General, that’s an excellent analogy! But sophons outside the light cone can see events on the inside.”

“So the sophons have changed fate,” Fitzroy said with feeling, and turned back to an image-processing terminal. Five years before, the young engineer Harris had started to cry at the sight of the brush, and afterward had suffered from depression so severe that he became practically useless at his job and was let go. No one knew where he had ended up.

Fortunately, there weren’t many people like him.

*   *   *

Temperatures were cooling rapidly these days, and it had started to snow, causing the green to gradually disappear from the surrounding area and a thin layer of ice to freeze on the surface of the lake. Nature lost its bright coloring, like a color photograph turned black-and-white. Warm weather here had always been short-lived, but to Luo Ji, the Garden of Eden felt like it had lost its aura since the departure of his wife and child.

Winter was a season for thinking.

When Luo Ji began to think, he was surprised to find that his thoughts were already in progress. He remembered back to middle school and a lesson a teacher had taught him for language arts exams: First, take a look at the final essay question, then start the exam from the top, so that as you work on the exam, your subconscious will be thinking over the essay question, like a background process in a computer. Now he knew that from the moment he became a Wallfacer, his thinking had started up and had never stopped. The entire process was subconscious and he had never been aware of it.

He quickly retraced the steps his thoughts had already completed.

He was now certain that everything about his current situation stemmed from his chance encounter with Ye Wenjie nine years ago. Afterward, he had never spoken of the meeting with anyone for fear of causing unnecessary trouble for himself, but with Ye Wenjie gone, the meeting was a secret known only to him and Trisolaris. In those days, only two sophons had reached Earth, but he could be certain that on that evening, they had been there by Yang Dong’s grave, listening to their every word. And the fluctuation in their quantum formation that instantly crossed the space of four light-years meant that Trisolaris had also been listening.

But what had Ye Wenjie said?

Secretary General Say had been wrong about one thing. Luo Ji’s never-begun research into cosmic sociology
was
quite likely the immediate reason why Trisolaris wanted to kill him. Of course, Say didn’t know that the project had been Ye Wenjie’s suggestion, and although it had just seemed to Luo Ji like an excellent opportunity to make scholarship entertaining, he had been looking for just such an opportunity. Prior to the Trisolar Crisis, the study of alien civilization was indeed a sensational project that would have garnered easy media attention.