第32章 The Reply

The construction of the Reply began in the spring, and it was unlike anything the colony had attempted before. The Witness had been a needle — sleek, fast, designed for speed and silence and the long sleep. The Reply would be a shuttle — broader, stronger, designed for cargo and people and the short, fast crossing that would allow the two colonies to trade not merely messages but materials, ideas, cultures, lives. They argued for a month about the name. Some wanted Continuation; others, Second Promise; the engineers, practical to the last, proposed Ship Two until the school petitioned — in handwriting, on paper, forty-seven signatures — for something that sounded like an answer rather than a receipt. Elara tallied the vote herself and announced the result at evening mess. The Reply it was: not a boast, not a poem, a grammatical fact. A promise had been heard across eleven light-years, and this was what hearing sounded like when a civilisation finally answered. Elara led the design team, and she worked with the same obsessive attention to detail she had brought to the Witness, but with one crucial difference: where the Witness had been designed for a one-way journey, the Reply was designed for many. It would cross the eleven light-years, deliver its cargo, wait, receive its own cargo, and return. And it would do this repeatedly, building a bridge of metal and light across the dark, a bridge that would strengthen with each crossing, each exchange, each meeting between the people of Proxima Centauri b and the people of Ross 128 b. Kael watched from the sidelines, as he always did, documenting, recording, archiving, the way he had always documented, recorded, archived. But this time, he found himself drawn into the work, not as a spectator but as a participant, contributing his knowledge of navigation, of logistics, of the long years of crossing that he understood better than anyone alive. "The crossing will take seven years each way," he said, at the design review, standing before the council and the engineers and the workers who had volunteered for the first crew. "Seven years out, seven years back. Fourteen years of total transit time. The crew will sleep for most of it, waking only for the approach and departure. But the cargo — the cargo will travel the whole way, in cryo-stasis, in containers rated for the crossing, in packages that will survive the dark and the cold and the radiation and the time." The manifest took weeks to settle because everything argued back. Seeds wanted moisture figures, radiation shielding, and something like a legal document declaring which varieties belonged to both worlds at once. Tools wanted mass allocations. The books wanted nothing except to be numerous, and the librarians fought for them crate by crate until the crystal wafers held every text the colony possessed — including, by unanimous vote of the archive board, the restricted files from the Aethelgard's first century, unsealed at last. If they were sending their story, Kael reasoned, they would send all of it, or the sending was theatre. The dogs made the final list only after a hearing. He paused, and he looked at the faces around the table — young faces, old faces, faces that had been shaped by the story of the Aethelgard and the Somnium and the Hesperus and the Witness, faces that understood that the crossing was not merely a journey but a commitment, a promise made physical in metal and fuel and light. "What are we carrying?" asked one of the engineers, a woman named Tessa who had been twenty when the Witness launched and was now forty-two, her hair streaked with grey, her hands calloused from years of work. "What is worth crossing eleven light-years for?" Kael smiled. "Everything," he said. "Seeds from Proxima. Tools from Proxima. Books from Proxima. Music from Proxima. Stories from Proxima. And on the return trip — seeds from Ross 128, tools from Ross 128, books from Ross 128, music from Ross 128, stories from Ross 128. We are not merely exchanging cargo. We are exchanging civilizations. We are building a bridge between two worlds that were separated by eleven light-years and a lie, and we are proving, with every crossing, that the bridge can hold." Tessa nodded slowly. "Then I want to be on the first crew." So did twelve others, and Tessa chose her crew the way Elara had once chosen hull thicknesses — by weight, by balance, by how much strain a person could take without changing shape. Among the fourteen she picked a botanist who had never flown, a teacher who had insisted, and Amara's youngest daughter, born on Ross 128 b and owed, everyone agreed, a look at the world her mother kept leaving. She got her wish and never once regretted it, though she did write a single sentence in her pre-flight log that Kael later had copied, in brass, onto the archive lobby wall: We are not leaving home. We are extending it. On the last evening before the launch window opened, the settlement declared itself a holiday without anyone officially declaring it. Work slowed anyway. Someone chalked good crossing on the water tower, and nobody climbed up to wash it off. In the archive, Kael pulled the oldest entry in the building — his own, aged seventeen, hands shaking, the discovery that had started everything — and read it twice, and decided against adding a postscript. Let the boy have the last word, he thought. He had earned it. The Reply launched in the autumn, and Kael stood on the pad with Elara and Amara — Amara, who had returned from Ross 128 b two years earlier, who had brought with her the stories of the Hesperus and the gratitude of two thousand people who had kept a light on through forty years of cold — and together they watched the shuttle rise, a broad, strong needle of dark metal against the pale sky, carrying fourteen people and the whole of their hope toward a promise that had been waiting eleven light-years in answer.