Tim Peake preparing for spacewalk. European Space Agency (ESA) astronaut Timothy Peake (born 1972) conducting a final-fit check inside the spacesuit he wore during his first spacewalk on 15 January 2016. Peake and NASA astronaut Tim Kopra worked outside the International Space Station (ISS) to replace a failed voltage regulator in the station's power generation system. Peake, part of the Expedition 46 crew to the ISS, was the first British citizen to fly in space as an ESA astronaut. Photographed on 11 January 2016.