International Space Station
Synchronised space swimming, anyone?
Coverage will start at 5pm UK time – and the launch is due to take place just after 9.30pm.
The 57-year-old will be the first actor to film on board the International Space Station.
A previous planned all-female space walk was called off when it became apparent that two smaller suits to fit the female astronauts could not be made in time.
The agency is trying to raise money so they can send astronauts to the Moon in 2024.
The only passenger is a life-size test dummy, named Ripley.
It could pave the way for producing food and oxygen there.
The astronauts were forced to make an emergency landing.
Astronauts have spoken about the two millimetre hole which was found in a craft ferrying astronauts to and from the International Space Station. There was speculation of a small meteor hit, but findings show it was man-made, most likely by a worker on Earth.
The crew have now covered the hole with some tape.