Twenty-five years later a ship appeared, on an afternoon in the planet's summer. Arak Miller watched it from the mesa. From Earth , he thought. From Earth! But Arak Miller was an ordered man. Even now, in the face of resurging visions of his wife, and his sons, and his work, and the mighty civilization from which he had been cut adrift, his thoughts were ordered: probably the ship had arrived from Earth to resurvey one of the Class II uninhabitable planets of the Alpha Centaurus System. Tomorrow