Just a few random thoughts, as it applies to the article and/or BDSM
First, the title: "Lust in space: Nasa must iron out the kinks in space sex if man is to settle on Mars". Response: Oh, that's just too easy - what if the 'nauts *want* kinks in space?
Besides, they are already practicing bondage, what with being tethered and stuff
Women might like being pregnant up in space. They won't gain weight in a weightless environment, right?
On the other hand, morning sickness won't be pretty in a weightless environment
Article: "...take a colleague as a lover for the duration of their three-year mission, to minimise (sic) sexual frustration". Response: So, i guess a BDSM relationship that includes orgasm denial wouldn't help.
Article: "Dr Kring's research involves placing highly trained pilots and military personnel in stressful situations and confined spaces, to judge how best to combine men and women on long duration space flights". Response: OK, first try "boy girl boy girl...". But, don't be upset if they prefer "boy boy girl girl girl boy boy...."
Article: "You have an exclusive relationship with them for six to nine months but when the expedition is over, so is the relationship and you return to your normal lives and families." Response: hhhhmmmm Seems that they don't know about you poly folks yet.
Article: "Dr Kring, who has former students working on spacecraft design for Nasa and private space contractors, says designers should "provide privacy" for men and women and potentially for discreet sex in space." Response: Kewl, let's help them design a dungeon!
Article: "It is thought that the Russian space agency has done work on what some euphemistically call "human docking procedures" in earth orbit." Response: Oh wow, that is just so cute
Article: "Other problems include the tendency to sweat more in zero gravity and a drop in blood pressure, potentially making sex in space a clammier experience and less easy for the man to rise to the occasion". Response: Viagra. Or, at least a CB3000 won't be necessary.
Article: "If human kind is going to extend its presence beyond earth, at some point we are very seriously going to have to consider: can we procreate on another world?". Response: Has one of those alien sluts ever shown up on James T. Kirk's doorstep with a baby in tow? Nope.