Chinese astronauts added more debris shielding to the Tiangong space station during a 6.5-hour spacewalk on Friday (Aug. 15), according to state media.

Two astronauts from the three-person Shenzhou 20 mission ventured outside Tiangong to do the spacewalk, which concluded Friday at 9:27 a.m. EDT (1447 UTC, or 10:47 p.m. in Beijing). It was at least the second effort for the crew to put "debris protection" devices on the three-module space station, following similar work on May 22.

Taikonauts Chen Dong and Wang Jie also inspected and maintained equipment on the exterior of Tiangong, among other duties, the China Manned Space Agency (CMSA) said, according to the state-run broadcaster CCTV.

It was Dong's sixth spacewalk — the most by any Chinese astronaut, CMSA officials said. Assisting the

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