water bears

Water bears, the tiny creatures that have already been proven to survive direct exposure to the vacuum of space, were slated for launch to a Martian moon this month. But Russian officials chose to delay their first interplanetary mission in more than a decade due to safety and technical issues, until the next launch window opens in 2011.

In space, no one can hear a tardigrade scream. They can, however see the tiny organisms (also called water bears) survive a trip through that icy, radiation filled void relatively unscathed.