Liu Boming and Tang Hongbo, two of the three Chinese astronauts or taikonauts stationed in the Tianhe core module of China's space station, ventured outside on Sunday to conduct the first extravehicular activities of their mission.

This is the second spacewalk that Chinese astronauts have carried out since the Shenzhou-7 mission in 2008, during which Liu helped his teammate Zhai Zhigang perform a landmark 20-minute spacewalk.