Mission to Venus
According to new research, getting down while we're way up high could theoretically cause health problems for spacefaring lovers.
James Bond may have given it a go in Moonraker, but experiments on mating plants by scientists at Montreal University show that weightlessness affects the way cells are transported inside living things, causing 'traffic jams' on the vital highways that connect different processes.
Although researcher Anja Geitmann said they could not draw any specific conclusions on the implications for animal - and human - sex in space, she added that intercellular transport is important in a variety of human cells.
Geitmann told LiveScience.com that many neural disease, including Parkinson's, Alzheimer's and Huntingdon's are all related to this 'trafficking'.
Sex in space is thought to have to become a certainty, as it is unlikely the couple on the Mars mission will want to abstain for the entire 16-month trip.
Still, if they need to conduct experiments, I'm willing to donate my body to science.