Have you ever wondered how you clean your teeth in space?
It’s not a problem for most of us, but for the six astronauts orbiting 370km (220 miles) above us in the International Space Station, even simple tasks can be challenging in microgravity.

Credit © National Aeronautics & Space Administration / Science & Society Picture Library
Luckily, our favourite tweeting astronaut Commander Chris Hadfield – who shares incredible daily images of the Earth including the stunning image of London at night below – has the answer.
Chris took time out of commanding the International Space station to share how he manages to brush his teeth while travelling at 8 km/sec.
Back on earth, you can discover how we are able to live in space – to breathe, to eat, to drink and… to go to the toilet – in our Exploring Space gallery, or watch ISS astronauts in action in our Space Station 3D IMAX film.