Seems there may already be a couple in the 100-mile high club!
Lust in space: Nasa must iron out the kinks in space sex if man is to settle on Mars
In fact that crown may already have been claimed in 1992 by a pair of married astronauts who flew together on the Shuttle, but Jan Davis and Mark Lee have never discussed whether they joined the 100-mile high club.
http://www.telegraph.co.uk/news/news...e-on-Mars.html