An astronaut from the space shuttle Atlantis collapsed twice Friday during a welcome home ceremony, a wobbly return that officials attributed to the adjustment from 12 days at zero gravity.

Space hurts. A presentation on space medicine at this years DragonCon totally destroyed every romantic idea I ever had about zero gravity space travel. We're not adapted for that environment. We'll need to bring a lot of gear with us, some of which we haven't made yet.