Concept

Sleeper ship

A sleeper ship is a hypothetical type of crewed spacecraft, or starship in which most or all of the crew spend the journey in some form of hibernation or suspended animation. The only known technology that allows long-term suspended animation of humans is the freezing of early-stage human embryos through embryo cryopreservation, which is behind the concept of embryo space colonization. The most common role of sleeper ships in fiction is for interstellar or intergalactic travel, usually at sub-light speed. Travel times for such journeys could reach into the hundreds or thousands of years, making some form of life extension, such as suspended animation, necessary for the original crew to live to see their destination. Suspended animation is also required on ships that cannot be used as generation ships. Freezing the astronauts would probably involve whole-body vitrification and would, most likely, be frozen at 145 kelvins to reduce the risk of fracturing. Suspended animation can also be useful to reduce the consumption of life support system resources by crew members who are not needed during the trip, or by an author as a plot device, and for this reason, sleeper ships sometimes also make an appearance in the context of purely interplanetary travel. There are numerous examples of sleeper ships in science fiction literature and films. Some of the best-known examples are: "Far Centaurus", published in Destination: Universe! by AE van Vogt The interplanetary sleeper ship USSC Discovery One is one of the main subjects of the whole Space Odyssey franchise. As it is told in 2001: A Space Odyssey, six crew members are on the spacecraft: Commander "Dave" Bowman and Frank Poole were de-hibernated before the others; Victor Kaminsky, Jack Kimball and Charles Hunter were killed by the sixth member: the psychopathic artificial intelligence HAL 9000. Pandorum The TV series Lost in Space used a sleeper ship, the Jupiter II, intended to hold the crew for the five-and-a-half-year journey to Alpha Centauri. Dr.

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