SpaceX successfully launched a crew of four—including a billionaire—as part of a private space mission known as Polaris Dawn early Tuesday, as the company looks to make history with the first-ever private spacewalk and the furthest crewed space flight since NASA’s Apollo moon missions more than 50 years ago.

Elon Musk’s SpaceX blasted off in Florida on Tuesday on a mission scheduled to culminate in the first private spacewalk in history.Tech entrepreneur Jared Isaacman plans to venture way beyond the International Space Station and further into space than anyone since the Apollo moon missions.