The spacewalk began at approximately 6:13 a.m. Eastern Time (1013 GMT). The two astronauts in the four-member all-civilian crew wore SpaceX-newly-designed extravehicular activity suits for the spacewalk.

According to Xinhua news agency, the two astronauts are American billionaire entrepreneur Jared Isaacman and SpaceX engineer Sarah Gillis.

Isaacman and Gillis each spent several minutes outside the capsule. The spacewalk ended at about 7:59 a.m. (1159 GMT).

SpaceX launched the new full-scale commercial human spaceflight mission on Tuesday aboard a Dragon spacecraft from NASA's Kennedy Space Center in Florida.

According to SpaceX, the spacecraft passed 1,400 kilometers from Earth 50 years ago on Wednesday.

The crew is also scheduled to conduct science during their multi-day mission in orbit, including health and human performance research essential to NASA's human research program.