Is sex possible in space? NASA's been wondering the same thing.

[Pierre Kohler, a respected French scientific writer] cites a confidential Nasa report on a space shuttle mission in 1996. A project codenamed STS-XX was to explore sexual positions possible in a weightless atmosphere.

Twenty positions were tested by computer simulation to obtain the best 10, he says. "Two guinea pigs then tested them in real zero-gravity conditions. The results were videotaped but are considered so sensitive that even Nasa was only given a censored version."

Only four positions were found possible without "mechanical assistance". The other six needed a special elastic belt and inflatable tunnel, like an open-ended sleeping bag.

Mr Kohler says: "One of the principal findings was that the classic so-called missionary position, which is so easy on earth when gravity pushes one downwards, is simply not possible."

[emphasis mine]

Two "guinea pigs," that is, cause i don't see them being able to direct actual rodents as to what positions they should be executing.

Inflatable tunnel. *snicker*