Astronauts at China’s new space station conduct first spacewalk

Two astronauts work for seven hours outside Tiangong station, in first of two spacewalks planned for mission

Chinese astronauts have performed the country's first tandem spacewalk, working for seven hours on the outside of the new Tiangong station in orbit around Earth.

Tiangong's construction is a significant step in China's ambitious space programme. China has previously landed a rover on Mars and sent probes to the moon.