"Back at home, we all have a lot of work to do," Isaacman said during the spacewalk. "But from here, it sure looks like a perfect world."
The two other privately trained Polaris Dawn astronauts, SpaceX engineer Anna Menon and retired US Air Force fighter pilot Scott Poteet, stayed inside the capsule, exposed to the vacuum of space as the Dragon Capsule doesn't have an airlock.
After Isaacman returned to the capsule, SpaceX engineer Sarah Gillis exited the spacecraft to conduct other tests. Neither of them floated freely, relying on 12-foot-long umbilical cords for oxygen.
In addition to making history with the first commercial spacewalk, the Polaris Dawn crew also reached a higher orbit than any other astronauts since the Apollo missions.
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