In case you were ever curious, this is how they wash their hands on the International Space Station. Now one would think, floating orbs of water wouldn't be the smartest thing to leave floating around loads of super expensive, life supporting electronic equipment, but ISS Commander Chris Hadfield is pretty confident in this Q & A session from space so we trust him. He is an astronaut (i.e. 100 times more deadly than any of us will ever be) after all.