Outer-space sex carries complications

Having sex in the weightlessness of outer space is the stuff of urban legends and romantic fantasy — but experts say that there would be definite downsides as well.
Spacesickness, for instance. And the difficulty of choreographing intimacy. And the potential for sweat and other bodily fluids to, um, get in the way.
"The fantasy might be vastly superior to the reality," NASA physician Jim Logan said here Sunday at the Space Frontier Foundation's NewSpace 2006 conference. Nevertheless, Logan and others say the study of sex and other biological basics in outer space will be crucial to humanity's long-term push into the final frontier.

Sex in space would likely be "hotter and wetter" than on Earth, Bonta said, because in zero-G there is no natural convection to carry away body heat. Also, scientists have found that people tend to perspire more in microgravity. The moisture associated with sexual congress could pool as floating droplets.
The physics of zero-G make the mechanics of sex more complicated. Bonta said it was challenging even to kiss her husband during a zero-G simulation flight they took recently. "You actually have to struggle to connect and stay connected," she recalled. Partners would have to be anchored to the wall and/or to each other. To address that need, Bonta has come up with her own design for garments equipped with strategically placed Velcro strips and zippers.
Although zero-G could be a boon for saggy body parts, Bonta said males might notice a "slight decrease" in penis size due to the lower blood pressure that humans experience in microgravity. Romantics will also need to guard against the type of motion sickness that space travelers often encounter, especially if they get too adventurous right off. "Save the acrobatics for post-play vs. foreplay," Bonta advised.