For those of you who hate brushing your teeth under normal circumstances, think about how much harder it is to clean those pearly whites in space, with zero gravity, no sink to get water from or to spit into afterwards.
International Space Station Commander Chris Hadfield shows off just how he needs to take care of his mouth in space. Does the toothpaste go up your nose? How do you get the toothbrush wet in the first place? Check out this video where Hadfield answers these questions and more, and here's a spoiler, he has a unique way of cleaning his toothbrush post usage.