The first manned interstellar voyage from Mars to Alpha Centauri is planned. However, with enough fuel for only one way, the astronauts plan to return by a technique based on an ancient Iroquois legend.
Life on a space ship is realistically portrayed, especially the group dynamics of being together for such a long time.
A very believable story with a plausible premise.
Thought-provoking and fascinating reading. The ending will leave the reader pondering.