Astronaut Tim Peake on Friday became the first Briton to walk in space, undertaking a tricky mission in the dark to replace an electrical unit.
Peake and US colleague Tim Kopra switched their spacesuits to battery power at 1248 GMT, marking the official start of the floating maneuver for Peake, who is also the first British astronaut to fly to the orbiting International Space Station.
As Peake climbed out of the space station, American astronaut Scott Kelly positioned a camera from inside so that the British flag on the arm of Peake's spacesuit was visible to viewers watching live on NASA television.
Space Station Welcomes its First British Astronaut
"Great to see the Union flag out there," said Kelly.
"It's great to be wearing it," answered Peake. "It's a privilege."
The 43-year-old Peake's first job was to haul a bulky component called a sequential shunt unit, contained in a white bag as big as a suitcase.
He carried the unit, which would weigh 200 pounds (90 kilograms) on Earth, to the far end of the space station's truss, about 200 feet (60 meters) from the exit.