For all these reasons, Logan said spontaneous sex in space could be "a little underwhelming."

"It's a pretty messy environment, when you think about it," he said. "And for every action there is an equal and opposite reaction. However ... I can well imagine how compelling, inspiring, and quite frankly stimulating choreographed sex in zero-G might be in the hands of a skilled and talented cinematographer with appropriate lighting and music."

When the crowd tittered, Logan added, "I'm not kidding: Sex in zero-G is going to have to be more or less choreographed. Otherwise it's just going to be a wild flail."

Practice makes perfect