One hundred and six years ago, the ship “Antey” left Earth. It is flying to the planet at Alpha Centauri (Alpha Librae). The ship’s crew is replaced each year by means of teleportation, but during the next crew change, contact with Earth is cut off. There are 34 people on board, and before them lies a choice: turn back or continue the journey—because the destination is still very close: only thirteen years of travel…