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Sex in Space Could Be Out of this World … Or Not

Getting busy might sound like a good way to pass the time on long space journeys, but it may not be the best idea, experts say.

If humans attempt to push the boundaries of exploration, space-based procreation will be an essential part of keeping a crew alive for the lifetime of a mission to a distant star. However, scientists don’t know how safe sex in space and childbirth may be.

NASA officials have long maintained that there has never been any hanky-panky between the space agency’s astronauts on the International Space Station or during space shuttle missions, which ended in 2011.

In light of the nonprofit Inspiration Mars Foundation’s recent plan to send a married couple on a 501-day manned mission around Mars in 2018, however, the first documented case of human sex in space might be on the horizon.

“Well, I’m sure that the couple chosen for the Inspiration Mars plan will have sex in space,” Laura Woodmansee, author of the book “Sex in Space,” told SPACE.com in an email. “No doubt there! I think that’s kind of an unwritten requirement. That’s why, I suppose, the foundation is planning to send a married couple.”

But doing the deed in microgravity might be a tall order.

“Sex is very difficult in zero gravity, apparently, because you have no traction and you keep bumping against the walls,” biologist Athena Andreadis of the University of Massachusetts Medical School told SPACE.com in 2011. “Think about it: you have no friction, you have no resistance.”

“Geologists explain that the formations are the result of the aging, tilting and erosion of two layers of consolidated volcanic ash, known as tuff.

These ash flows originated from the Cascade volcanoes to the west many thousands of years ago. The top layer of tuff was tougher so to speak than the bottom layer, so as the ground tilted and cracked and the softer bottom layer was eroded by wind and water, top-heavy rock pedestals remained.