(Library of Congress description):
Library of Congress description
For a telepathic twin on an exploratory space voyage only a few years pass, yet, when he returns to Earth his brother is ready to celebrate his ninetieth birthday.
Original title: Time for the Stars
Genre: Fiction→ Science Fiction→ Species Evolution→ Psionic Powers
Fiction→ Science Fiction→ Adventure→ Planetary Exploration and Colonization
Fiction→ Children & Young Adult→ Science Fiction→ Outer Space