Polaris Dawn also carried out the first spacewalk by private astronauts. Traditionally only government astronauts, such as from NASA and the Russian and Chinese space agencies, ca

The SpaceX capsule, whose crew was led by the billionaire Jared Isaacman, splashed down near the Gulf of Mexico early Sunday.

Like every other major milestone of the Polaris Dawn mission, you're going to have to be awake in the middle of the night to catch the action.