Newsround goes behind the scenes at the ISS
12 November 2015 Last updated at 07:37 GMT
Ever wondered what it would be like to live in space?
Newsround's had a behind the scenes tour of a replica of the International Space Station, which will be home to astronaut Tim Peake for the next six months.
The replica is at Star City in Russia, where Tim is currently training for his mission.
Hayley's been having a look around.