Tim Peake
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UK astronaut Major Tim Peake training underwater

24 January 2014 Last updated at 08:29 GMT

The UK's first official astronaut, Major Tim Peake, has been training underwater to prepare him for space.

He's heading to the International Space Station for a mission next year.

Major Peake is training at the European Astronaut Centre in Germany, where he's using a pool to try and experience what it's like to work in zero gravity.

Watch this clip of Major Tim Peake talking underwater!