No sex, please, we’re astronauts:

Dr Rachel Armstrong, speaking yesterday at a British Interplanetary Society symposium on the Human Future and Space, said the US space agency Nasa was considering how to deal with the natural urges of astronauts travelling on long journeys such as a three-year trip to Mars, where the six-strong crew would be likely to include two women.

“Nasa is talking about the chemical sterilisation of astronauts on longer journeys,” Dr Armstrong said, in a talk discussing the problems humanity may face in trying to reach the planets and, eventually, the stars. . . .

Douglas Powell, a psychology professor at Harvard University who was recruited in 1999 by Nasa to investigate the behavioural needs of long-term space trips, said: “Like anywhere, these are normal healthy people in their prime and they are sexually active so they are going to get involved with each other. So what’s going to happen in space? It’s a serious question and it needs to be confronted.”

[S]cientists such as Professor Powell are concerned that the emotional fallout from having a crew where some are happier than others, or where relationships are made and then fall apart, could be disastrous. He noted the comments of one Russian cosmonaut about time spent cooped up in the Mir space station that “when you have two people locked up in a very small environment for months at a time, all the conditions for murder are met.” Mix in sex, and you almost have the script of Othello in space. . . .

NASA seems to deny this, however:

Nasa was nonplussed by the suggestion yesterday. “I haven’t heard anything about that,” said a spokesman at Nasa’s Johnson Space Centre, where the long-range trips announced by President George Bush in January are being planned. . . .

Thanks to Dan Gifford for the pointer.