1) Hypothetical spacecraft 2) Type of Fictional spacecraft
Found on
https://www.crosswordclues.com/clue/sleeper-ship
A sleeper ship is a hypothetical type of manned spaceship in which most or all of the crew spends the journey in some form of hibernation or suspended animation. There is currently no known technology that allows for long-term suspended animation of humans. The most common role of sleeper ships in fiction is for interstellar travel, usually at sub...
Found on
http://en.wikipedia.org/wiki/Sleeper_ship
No exact match found.
