NASA explain what Tim Peake will be doing on his spacewalk

The British astronaut will be heading out into the great unknown this week

NASA explain what Tim Peake will be doing on his spacewalk

(Image: NASA)

Nasa has been explaining what British astronaut Tim Peake will be doing on his spacewalk.

He'll venture out of the International Space Station on Friday.

Before he left, Tim said one of his biggest aims was to go on a mission outside.

Kenneth Todd, the station's operations integration manager, says the astronauts will be replacing a faulty component: