15 March 2014 Last updated at 10:14 GMT
Tim is going to spend six months on board the International Space Station next year carrying out scientific experiments.
He's currently in a training camp in Russia, but Nel managed to touch base with him and put some of the questions you sent in to Tim.
Check out what he had to say...
Footage courtesy of Nasa and Esa
The UK's first official astronaut, Major Tim Peake, has been answering your questions about all things space.