Possivelmente O Milênio dos Sonhos , James White, 1974.
John Devlin, a 26-year-old medical doctor, is the captain of a sleeper ship built to colonize planets in other solar systems. The spacecraft's trajectory is such that it will make passes of eleven stars thought to have a good chance of supporting habitable planets, over the course of about a thousand years. Most of the starship's systems are automated, so Devlin does not have to do much maintenance, but he is required to look at potential planets for colonization and solve problems as they arise. Except for being awoken at long intervals to eat, exercise, and perform his duties as captain, Devlin spends all of his time in hibernation, during which he dreams the entire lives of people and other creatures that lived and died on Earth in the past.