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.

When could the SpaceX Starship launch again?

The SpaceX Starship rockets have been grounded by the Federal Aviation Administration following the historic April 20 Texas launch that resulted in a fiery explosion, with pieces falling into the Gulf of Mexico.