Tim Peake takes his first spacewalk – video

British astronaut Tim Peake takes his first spacewalk on Friday. Peake's Stint outside the International Space Station (ISS) will last more than six hours, and will involve him and his Nasa partner Tim Kopra traversing almost the entire length of the space station to replace a broken power unit, fit a new valve, and lay tens of metres of cable

• Tim Peake spacewalk: astronauts have begun six hour mission outside the ISS - live