Hibernating astronauts are a staple of science fiction. Now it appears they're one step closer to reality, and you won't believe the cause:

Suspended animation has been deliberately induced in a species of mouse which does not naturally hibernate. It is the first time such a feat has been achieved, say the procedure’s pioneers.
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The mice were induced to fall into their deep sleep after being exposed to hydrogen sulphide - the gas which gives rotten eggs and stink bombs their characteristic foul odour. The animals later revived in ordinary air.

And all this time Ellen's been complaining about me farting under the covers. I'm helping you sleep!