The Wandering Earth

by Liu Cixin

  My father replied in equally hushed tones. “There were rumors like that at the first four perihelions.”

  “But this time it's true. I heard it myself from Professor Qian Dele's wife,” came my mother’s quick and soft response. “He is an astronomer of the Navigation Commission. You all know him. Anyway, he himself told her that they have observed a further acceleration in the concentration of helium.”

  “Listen, my dear, we must hold on to hope,” my father calmly but insistently replied. “Not because hope is real, but because we have to live up to nobility. In the Pre-Solar Age nobility meant money, power or talent, but now one must only hold to hope. Hope is the gold and the jewels of this age. No matter how long we live, we must hold fast to it!” He then added, “Tomorrow, please tell our child the same.”

  Like everyone else, I felt ill at ease as the perihelion approached. One day, as I was going home from school I — without really knowing why — ended up in the city's central plaza. I stood by the round fountain in its middle, in turn looking down at its sparkling blue water and up to the ethereal ripples of light reflected by the gushing water below that played across the dome above me. After a while I noticed a familiar face. It was Ling, holding a little bottle in one hand and a small tube in the other. She was blowing soap bubbles, her eyes blankly following each string of bubbles as they floated away. She watched them until they vanished, only to blow another string.

  “Aren't you a bit too old to find that amusing?” I asked her as I approached.

  Ling looked at me in surprise and with a warm smile said, “Let's go on a journey!”

  “A journey?” I asked, now the one surprised. “Where to?”

  Her smile beamed brighter. “The surface, of course!” She waved her hand through the air, using her wrist computer to project a hologram. The translucent image revealed a beach sunset. A breeze gently swayed the palm trees, while white waves washed ashore. A couple lay on the golden beach, black silhouettes against the backdrop of the glittering sea.

  “Mengna and Dagang just sent me this. They're already on the other side. They said that it's not too hot out there and being in the open air would really be nice about now, so let's go!” she told me, her enthusiasm showing.

  “They've just been expelled for missing school,” I objected.

  Ling frowned. “Hmm, that's not what you’re really afraid of. You’re afraid of the Sun!”

  “And you aren't scared? Have you forgotten that you had therapy to treat your heliophobia?” I retorted.

  She smiled again. “But I am no longer that person. I've finally seen the light. Look,” she said using the small tube to blow another string of soap bubbles. “Watch them closely!” She pointed at the bubbles.

  I stared at the bubbles, watching the raging waves of color and light play over their surfaces, their twisting turbulences far too complex and intricate for the human mind to take in. I could not shake the thought that the bubbles knew how short their lives would be and were frenziedly revealing the countless dreams and legends of their vast memories to the world. Seconds later, the raging waves of color and light disappeared in a nearly soundless explosion, leaving behind only the tiniest wisp. They remained for less than a second before disappearing; and then there was no trace that anything had ever existed.

  “Did you see? The Earth is a cosmic soap bubble; with a pop, it will be nothing. So what is there to be afraid of?” Ling asked.

  It was my turn to frown. “It's not really like that; the calculations show that after the helium flash it will take about a hundred hours before the Earth is fully vaporized.”

  “That's the absolutely terrible part!” she shouted. “We are a third of a mile underground, just like the meat stuffing in a pie. First we'll be roasted and then we'll be vaporized!”

  For a moment a cold shiver ran down my entire body.

  Ling continued. “But it won't be like that on the surface. There everything will evaporate in the blink of an eye. The people on the surface will be like soap bubbles, gone in a pop.” She smiled again. “And because of that, I think it would be better to be on the surface when the helium flash hits.”

  I couldn't say why, but I did not go with her. Instead, she left with Tung and I never saw them again.

  The helium flash did not happen. The Earth rushed past the perihelion and began its sixth journey to the aphelion, allowing humankind's taut nerves to relax. Once we passed the perihelion, the Asian Earth Engines faced in the direction of Earth's orbit. With the Earth no longer in rotation, this meant that, save for the occasional minor positional adjustments, Asia's Earth Engines were shutdown completely. We sailed into a quiet and very long night.

  The American Earth Engines, on the other hand, were operating at full capacity with that continental plate now acting as the superstructure for the jets of our planet-rocket. Because the Western Hemisphere also faced the Sun, the temperatures there were truly horrific; horrific enough to burn all their vegetation to ash.

  The Earth's orbitally-assisted acceleration carried on like this, year after year. Every time the Earth sped toward the aphelion, humanity's collective nerves relaxed in tune with the Earth's increasing distance from the Sun; every new year, with the Earth falling toward the Sun, they would grow tauter with each passing day. And, every time the Earth came to the perihelion, rumors would begin to fly, proclaiming that this time the helium flash would happen. The rumors would persist until the Earth again sped toward the aphelion; then the people's fears would begin to gradually diminish, together with the shrinking of the Sun in the sky.

  But the next wave of fear would already be brewing.

  It was as if humanity's spirits were caught in a cosmic swing. Or perhaps it would be better to say that we were playing a cosmic game of Russian Roulette; the journey to the aphelion and back to the perihelion was like the turning of the chamber, and passing the perihelion was just like pulling the trigger! Every time the trigger was pulled our nerves would be more frayed than the last. We passed our youth under the shadow of this oscillating terror.

  Actually, when one really thought about it, the Earth never left the blast radius of the helium flash. Even at the aphelion, the only difference would have been that the Earth would have been slowly liquefied instead of being vaporized by the explosion; and that end would have been worse than what would have happened at the perihelion.

  The Exodial Age soon became an age of catastrophes.

  The first came when the acceleration produced by the Earth Engines and the change of orbital trajectory disturbed the equilibrium of Earth's iron-nickel core. The effect crossed the Gutenberg-Discontinuity and spread into the planet's mantle. All across the world, geothermal energy escaped and a cataclysmic rampage of volcanic eruptions followed in its wake. From the sixth orbit on, the subterranean cities were thrown into mortal peril as magma seepage became all too frequent and catastrophic events.

  On the day it happened, I was just on my way home from school when I heard the blare of the municipality's emergency broadcast.

  “Alert! All citizens of City F112! The city's northern protective barrier has been breached by crustal stress and magma has entered the city! Magma has entered the city! At this moment magma is flowing into Block Four! The Underway exits are blocked off. All citizens are to gather in the central plaza and evacuate from there via elevator. Attention, the evacuation will commence according to Article Five of the Exigency Law! I repeat: The evacuation will commence according to Article Five of the Exigency Law!”

  Looking around the labyrinth of passages, our subterranean city seemed eerily normal. But I was aware of the immediate danger; there were only two Underways to the outside and one was blocked since last year due to necessary reinforcement work on the protective barrier. If the other way was also blocked, we could only escape by elevator through the vertical shafts and the carrying capacity of the elevators was very limited. It would take very long indeed to evacuate all 360,000 inhabitants that way. There was no need, howe
ver, for it to turn into a struggle for survival; the Exigency Laws of the Unity Government ensured a well-ordered escape.

  It brought to mind an ethical question in the olden days; it had gone, 'You are in a flood and you can only save one person. Do you rescue your father or your son?' In the eyes of our age, that question made absolutely no sense.

  When I arrived in the central plaza, I saw the other inhabitants already lining up in long rows according to their age. Closest to the elevator doors stood the robot nurses holding the infants, then came the kindergarteners, followed by the children in primary school and so on; my place in the ranks was still rather close to the front.

  At the time my father was on duty in Low-Earth-Orbit, leaving only my mother and myself in the city, and I could not find her. Running along the crowded ranks, I looked for her, but was soon stopped by soldiers. I knew that she would be in the last group, all the way at the end. Our city was first and foremost a school city, with only a few families, and she had already calculated where her age peers would be.

  The queue moved at an exasperatingly slow pace. It took three long hours before it was my turn, but I felt no relief as I boarded the elevator. I knew that there were still 20,000 college students between my mother and her survival; I could already smell the strong odor of sulfur.

  Two and a half hours after I had made it to the surface, magma swallowed the entire subterranean city a third of a mile below me. Imagining my mother's final moments felt like twisting a knife in my heart. She, along with 18,000 others that could not be pulled out, must have seen the magma surge into the central plaza. The power had already failed then, leaving the horrible crimson glow of the magma as the only remaining light. The white dome high over the square would have slowly blackened under the heat and those trapped would have surely perished. They must have never felt the magma actually engulf them; the scorching air, hotter than 2,000-degrees, would have taken their lives long before.

  But life had to go on, and even in our cruel and terrible reality, the enticing sparks of love could flash at any moment. During the twelfth journey to the aphelion, the Unity Government, in an attempt to ease humanity's anxiety, unexpectedly revived the Olympic Games 200 years after they had been suspended. I was going to participate, having been selected for the motorized sled rally team. The competition would involve racing my motorized sled from Shanghai, across the frozen Pacific, and then on to New York.

  As soon as the starting shot rang out, more than a hundred sleds shot off across the frozen ocean, blazing across the ice at 120 miles per hour. During the first leg there was always a competitor in my sights. Two days later, however, all others, whether they were ahead or behind me, had disappeared over the horizon.

  The light of the Earth Engines had disappeared together with my fellow racers. By this time I had come upon Earth's darkest corner. Here all things stretched into infinity; above, the starlit sky, and below, the frozen ocean. It almost seemed as if they reached the ends of the universe; or perhaps I had reached the ends of the universe itself.

  I felt as if I was the only human in this cosmos of infinite stars and endless ice, and I was overwhelmed by an avalanche of loneliness. At the edge of tears, I sped on, racing as if my life depended on it. My race was no longer for a spot on the podium; it was to rid myself of this terrible loneliness before it killed me. In my mind there was no longer a far shore for me to reach.

  Just as these thoughts raced through my head, I saw the silhouette of a person against the horizon. As I closed in, I realized that it was a woman. She was standing next to her sled, her long hair fluttering in the icy wind. You may already have guessed that it was this chance encounter that would shape the second half of both of our lives.

  Her name was Koriyama Kayoko and she was Japanese. The women's group had set out from the starting line 12 hours before us, but her sled had been caught in an ice crack, breaking one of its runners. As I helped her with the repairs, I could not help but share the bleakness that had just overcome me.

  Nodding in acknowledgment, Kayoko said, “Oh, absolutely. It was exactly the same for me! It really feels just like being the only person in the universe!” She smiled as she continued. “You know, when I saw you appear in the distance, it was just like what seeing the dawn must have been like in the Pre-Solar Age.”

  After a moment I had to ask, “Why didn't you call for the rescue plane?”

  She raised her small fist and, with the perseverance so characteristic of the Japanese, declared: “This competition embodies the spirit of the human race and we all need to realize that the Earth, wandering through the universe, cannot call for help!”

  I nodded, but replied, “Nonetheless, we now have to call; we don't have a replacement runner. Your sled is broken for good.”

  She grimaced and then said, “How about I hitch a ride with you? That is, if you really don't care about your ranking.”

  I really did not care, and so Kayoko and I completed the remainder of our long journey over the Pacific.

  As we passed Hawaii, we saw the first light of dawn on the horizon. On this endless field of ice, illuminated by a tiny Sun, we sent our application for a marriage license to the Ministry of Civil Affairs of the Unity Government.

  In New York, the race judges had — having impatiently waited for us — already wrapped up the competition and left. But there was one official waiting for us. A worker from the municipal Bureau of Civil Affairs was more than pleased to congratulate us on our marriage. He then carried out his duties. With a wave of his hand, he projected a hologram into the air, revealing neat rows of thousands upon thousands of dots; one dot for every couple that had registered for marriage in the past few days.

  Due to the harsh conditions, the law stipulated that only one of every three newly married couples would be given the right to procreate as determined by the luck of the draw. Faced with the many thousand dots, Kayoko hesitated for a long while before choosing one.

  When the dot turned green, she leapt with joy. I, on the other hand, did not really know what to feel. Would it be fortune or folly to bring a child into this miserable age? The official, at least was jubilant. He told us that it always made him a little happier when he got to see a newlywed couple get their “green dot”. He retrieved a bottle of vodka and poured each of us a drink. We slammed it down, toasting to humanity's survival.

  Behind us the feeble light of the distant Sun bathed the Statue of Liberty in a golden glow. Before us stood the long abandoned skyscrapers of Manhattan, the Sun's weak light casting their long shadows across the quiet ice of the New York Harbor. In my tipsy haze, tears began to gush down my cheeks.

  Earth, oh, my wandering Earth!

  Before we parted, the official gave us a key ring. In a drunken drawl he said, “These are for your newly allotted home in Asia. Go home; oh, your wonderful home!”

  “Why is it wonderful?” I asked coldly. “Asia's subterranean cities are full of dangers; but you in the Western Hemisphere wouldn't know that.”

  “We are about to experience a danger that you have never known,” he shot back. “The Earth will soon make its pass through the asteroid belt and this time the Western Hemisphere is facing right toward it.”

  This somewhat sobered me. “We passed through the asteroid belts a couple of times in the past few orbits; isn't it a non-issue?”

  The official shook his head as he responded. “We just scraped the edges of the asteroid belt. Of course, the space fleet could handle that. They have the lasers and nukes to get rid of all the small rocks in the Earth's path. But this time…” He choked. “Haven't you seen the news? This time the Earth will pass directly through the asteroid belt! The fleet can only deal with those big rocks; but the small one…”

  As we were flying back to Asia, Kayoko asked me, “Are those asteroids very big?”

  My father was in orbit then, tasked with securing Earth's journey. Therefore, despite the government's news blackout aimed at avoiding a panic, I had some idea what we we
re facing. I told Kayoko some of that. “The Earth is heading towards asteroids the size of large mountains; even a fifty megaton nuclear bomb would do no more than leave a small scar on their surface. They will have to use humanity's most powerful weapon!” I added in an enigmatic tone.

  “Are you talking about anti-matter bombs?” she asked.

  “What else could it be?” I replied.

  “What is the fleet's operating range?” she asked.

  “Currently it is limited. My father told me it’s about a million miles away,” I answered.

  “Oh, then we will be able to see it!” she said excitedly.

  I gave her a look of warning. “But it would be best not to look.”

  But Kayoko did look, and did so without protective goggles. The first flash of an anti-matter bomb arrived from outer space shortly after our plane had taken off. Kayoko was looking out a window admiring the stars at the exact moment it happened. The flash blinded her for more than an hour. Even a month later her eyes were still red, swollen, and teary.

  It shook every one of us to our core. The anti-matter shells continued to bombard the asteroid. Over and over again, the brilliant, destructive flashes seared the black heavens as if a crazed horde of titanic paparazzi surrounded the Earth and was snapping away with abandon.

  Half an hour later, we saw the first meteors, their long, blazing tails cutting across the sky, enthralling us all with their terrible beauty. Ever more followed in their wake, each streaking farther than the last.

  Then, the sky suddenly shook behind us with a loud boom, immediately followed by continuing rumbling and more shaking. Kayoko, under the impression that a meteor had hit the plane, screamed in fear and jumped almost right into my arms.

  Just then the captain's voice came through the speakers. “To all passengers; please do not panic. That was the sonic boom of a meteor breaking the sound barrier. I do ask everyone to use their headphones in order to avoid permanent hearing loss. Because the flight's continued safety cannot be guaranteed, we will make an emergency landing in Hawaii.”