system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Has anyone had sex in space yet? If so, how, and why? If not, why not/is it viable?

A friend and I were having this argument the other day. Googling turned up ultimately very little which leads me to believe it probably hasn't happened yet, but I dunno, I figure there's people out there that know more about space banging than us.

I originally was going to ask if anyone had had sex in zero G yet but I think there *might* be porn made on one of those vomit comet airplanes? Haha.
gpt
Husband and wife teams have gone into space. The odds of someone at least attempting it are pretty high. However, NASA says it's difficult to obtain an erection in zero-g because of blood flow problems.

The "Uranus Experiment" series shows zero-g sex filmed on aircraft.