Also known as To the Stars.
Return to Tomorrow was first published in a serialized format in 1950 in Astounding Science Fiction.
The novel's thought-provoking opening line, "Space is deep, Man is small and Time is his relentless enemy," powerfully captures the challenges facing the brave men and women of these vessels — people who must give up their former lives to explore space as entire generations and whole societies come and go on Earth, while those aboard remain essentially untouched by the passage of time in a vessel traveling at nearly the speed of light.
This immersing, remarkably ruthless drama begins when Alan Corday, a naively unseasoned but brilliant young engineer, is shanghaied from the spaceport at New Chicago and taken aboard the Hound of Heaven bound for the stars.
Commanded by a distantly mysterious but charismatic leader by the name of Captain Jocelyn, the Hound traverses the galaxy in an effort to keep open a lifeline between Earth and the first colonies in other star systems. But in the time span of a few crossings, conditions on Earth grow gradually worse and more dangerous, while those aboard are treated increasingly as outcasts and a threat to the powers that control the planet.
Against his will, Corday is mercilessly driven by Jocelyn to use his untested intellect and abilities to serve the ship and the beleaguered space colonies. But as events unfold among the turbulent reaches of the galaxy, and during the perilous returns to Earth, Corday discovers a startling truth about his destiny that will give a whole new meaning to man's place in the stars.