When you go to the bathroom on earth, you're relying on gravity...pretty, pretty heavily Imagine if you're half way done and somebody shut off gravity It'd be a mess and you'd float of the toilet So, when we designed our space toilet first to a seat belt on it, to hold you down and then, we decided to separate solids and liquids because it is easier to store that way So, we just have tube that you pee into, and have air pulled to the tube so it's not a big deal For the women, there's a cup that fits-up against them, For the guy , it's just a little tunnel, you just pee into the stupid it goes into a sewage tank But the solids that come out of your body , that's a harder problem to solve And it's an important medical one, because on Earth everything falls on the floor But in space it's gonna float around So it'll really make you sick If you re-ingest something that came out of your body it will really make you sick And we can't afford to get that sick So we designed a toilet that, instead of gravity pulling everything into the toilet, it has air flow There's air pulled down into the toilet -- Sort of windy when you're sitting there But it pulls everything out of your body Everything that comes out of your body gets pulled down into the toilet by the air and then in the storage tank we just expose that to the vaccum of space , so it basically just freeze-dries everything So it killes all the bacteria so there's no smell And then we store it And then when we have a whole bunch if stored we put in a little unmanned supply ship and then we undock it and then it burns up in the atmosphere So the next time you see a beautiful shooting star going across the sky that's what it might be