The Shenzhou XX mission crew members have conducted their second spacewalk outside the Tiangong space station, completing several assignments, according to the China Manned Space Agency.

The agency said in a news release that mission commander Senior Colonel Chen Dong and crew member Colonel Chen Zhongrui returned to the Wentian science module at 9:29 pm on Thursday after floating for six-and-a-half hours outside the colossal orbital station.

The third crew member, Colonel Wang Jie, stayed inside Tiangong to provide support, it said.