Posted by tourdemars to Humans To Mars at February 27, 2013 11:18 AM

Millionaire space tourist Dennis Tito's plan to send two astronauts on a 501-day flight that zooms past Mars and swings back to Earth would set plenty of precedents on the final frontier — but the most intriguing precedent might have to do with the astronauts that are to be sent: one man and one woman, preferably a married couple beyond childbearing years. We're talking about sex in space, folks. And if that's not intriguing enough, consider this: There are already a couple of candidates for the job.