What does UK astronaut Tim Peake fear?

British astronaut, Tim Peake, has been talking about this feelings ahead of a six-month stint on the International Space Station.

During his time at the ISS, from next month, Mr Peake will be conducting experiments for the European Space Agency.

At a news conference at the Science Museum in London, the BBC's David Shukman asked him whether he had ''a tiny bit of fear'' ahead of his space mission.