"The idea of suspended animation for interstellar human spaceflight has often been posited as a promising far-term solution for long-duration spaceflight," said Dr John Bradford, CEO of the firm. The cryosleep system works by chilling humans and artificially inducing a state of hypothermia so astronauts can hibernate for up to two weeks. A similar technique is already used to cool the body of someone who has suffered a cardiac arrest in a bid to avoid brain damage. This would allow just one space man or woman to maintain the ship, meaning the spacecraft could be much smaller and travel more...