They are two astronauts, the best and the brightest. They have been sent out further than any manned probe has ever gone, past the farthest moon, past the farthest planet in the solar system, out beyond the outpost. For the past three years they have been gathering data from their survey of the nearest star, a star with a ring of planets of its own. But now begins the most treacherous part of the mission... The journey home.