Chinese astronauts Nie Haisheng, Liu Boming and Tang Hongbo embark on the voyage home after the Shenzhou-12 spaceship completed circumnavigation and radial rendezvous tests on Thursday. 

They have lived and worked in China's space station for 90 days, the longest stay in space by Chinese astronauts, according to the China Manned Space Agency. The three astronauts were sent into space aboard the Shenzhou-12 spaceship and entered the Tianhe core module on June 17.