WATCH: SpaceX's Polaris Dawn crew completes first private spacewalk

Jared Isaacman, CEO of Shift4 integrated payment processing solutions, participated in the first ever private spacewalk by a group of astronauts who left a SpaceX capsule after a delay of a few hours, testing a new line of spacesuits in the company's riskiest mission yet.

First-ever private spacewalk

Billionaire entrepreneur Jared Isaacman and SpaceX employee Sarah Gillis step out of the SpaceX Crew Dragon capsule for the first-ever private spacewalk. SpaceX's Crew Dragon craft will slowly depressurize its entire cabin - it has no airlock like the ISS - and all four astronauts will rely on their slimmed-down, SpaceX-built spacesuits for oxygen. For the spacewalk, Isaacman and Gillis will exit the spacecraft tethered by an oxygen line while Scott Poteet, a retired U.S. Air Force lieutenant colonel and SpaceX employee Anna Menon stay in the cabin.