The SpaceX Polaris Dawn mission, led by fintech billionaire Jared Isaacman, is returning to Earth on Sunday, with splashdown scheduled at 3:36 am Eastern Time off the coast of Dry Tortugas, Florida. The mission made history with the first-ever spacewalk by non-government astronauts. The crew reached a peak altitude of 870 miles (1,400 km), three times higher than the International Space Station, marking the furthest human journey since the Apollo missions.
