Nasa releases stunning 'action cam' footage of spacewalk

NASA has revealed incredible'action cam' footage from a spacewalk on the International Space Station, giving an up-close look at what happens when astronauts step outside the orbiting craft. As the astronauts go about their tasks, it might at first be easy to forget that they are 250 miles above the surface – but, a quick change of perspective revealing the curve of Earth far below serves as a jolting reminder. During the spacewalk, the ESA's Thomas Pesquet and NASA's Shane Kimbrough prepared the Pressurized Mating Adapter-3 for a second International Docking Adapter, which will allow commercial crew vehicles to dock. In March, astronauts on the ISS began to make preparations for the installation of the second of two parking spots for space taxis, known as the International Docking Adapters. New crew spaceships, being designed by SpaceX and Boeing, will use them when they begin flying astronauts to the station in the coming years, as early as 2018.