For readers of Station Eleven and The Martian, Lily Brooks-Dalton's haunting debut is the unforgettable story of two outsiders—a lonely scientist in the Arctic and an astronaut trying to return to Earth—as they grapple with love, regret, and survival in a world transformed.

Augustine, a brilliant, aging astronomer, is consumed by the stars. For years he has lived in remote outposts—from Chile to Hawaii to Australia—studying the sky for evidence of how the universe began. At his latest posting, in a research center in the Arctic, news of a catastrophic event arrives. The scientists are forced to evacuate, but Augustine stubbornly refuses to abandon his work. Shortly after the others have gone, Augustine discovers a mysterious child, Iris, and realizes that the airwaves have gone silent. They are alone.

At the same time, Mission Specialist Sullivan is aboard the Aether on its return flight from Jupiter....