Masturbation on the international space station

Scientists aboard the International space station are up there for one reason. To conduct experiments in microgravity. Sex in the space shuttle would be unlikely, there are astronauts in a very tiny space bumping into one another. But the ISS is a different matter.

Director Daniel Espinosa has made a salute to our cells; put them under a microscope and each one is a galaxy. Here, our villain, a cluster of Martian cells dubbed "Calvin," is simply out to do the same, and this International Space Station doesn't have room for two species. Espinosa strips "good" and "evil" from his horror flick. It's not personal; it's biology.

Moscow scientists say they're struggling to find volunteers willing to provide samples of their little swimmers while living aboard the International Space Station. The government-backed study could help Russia and other spacefaring countries plan missions to colonise other planets. But a Kremlin scientist revealed this week that they'd had no luck finding volunteers.