Mars500 Ends

Mars500, the simulated Mars missioon in Russia that included six crewmembers, has ended after 520 days. All seems to have gone well.

Researchers expect to learn much about the physical and psychological stresses of an actual mission, and Russia suggests the logical follow-up study would be a similar program done in microgravity on ISS. Such an effort, Russia says, could be done after 2014.