Funny that this node happened to pop up just now... I live very close to Cape Canaveral. Last week this topic was delved into on one of Orlando's top talk/entertainment radio stations. Several NASA employees called in, quite eager to give the listening public some interesting info. NASA has been studying human reproductive functions in zero gravity for quite a while. Some of their research has included studies of male erections and ejaculation, amongst other things.

How could NASA not study such definitive aspects of life funtions? After all, it takes 18 months for a space craft to travel from the Earth to Mars. We're talking a three year round trip, excluding the prime opportunity for flight windows. Seriously, who could possibly go that long without an orgasm?