Chinas Shenzhou 20 mission has docked with the Tiangong space station. The crew of three astronauts launched from Jiuquan and arrived on April 24. Their stay will last six months. This is Chinas ninth crewed mission to Tiangong.

Astronauts Chen Dong, Chen Zhongrui and Wang Jie attend a see-off ceremony for the Shenzhou-20 spaceflight mission at Jiuquan Satellite Launch Center near Jiuquan, Gansu province, China. China Daily via REUTERS ATTENTION EDITORS - THIS PICTURE WAS PROVIDED BY A THIRD PARTY.