Two Chinese astronauts have completed the longest spacewalk ever. This is according to a report from the China Manned Space Agency (CMSA). On Tuesday, Cai Xuzhe and Song Lingdong worked outside the Tiangong space station for nine hours and six minutes. The astronauts on the Shenzhou 19 mission thus broke the previous world record of eight hours and 56 minutes set by the Americans James Voss and Susan Helms in 2001. The Space News portal noted that, according to China’s national space agency, its spacesuits are only designed for a work period of eight hours.