What’s Mars 500? Well, Mars-500 is an experiment that simulates a manned flight to Mars. The experiment is based at the IBMP facility in Moscow, Russia. Now, I could go in to much more detail, but somebody over on Wikipedia has already done that, so why not follow this link and read up about it over there.
After you are finished there, why not pop back here and watch the opening of the Mars 500 Hatch at 5:50 AM - 7:00 AM EDT on Nov 4th, 2011.