document: For six months the International Space Station (ISS) will be his home.
  The ISS was launched back in 1998 and astronauts have been living on board ever since.
  It's an important place to carry out tests and research that will help future space missions to places like the Moon and Mars.
  Take a look at the ISS in numbers:
summary: Major Tim Peake is getting ready to blast into space to complete his first mission.