Astronauts Doug Hurley and Bob Behnken prepare to return to earth on a SpaceX capsule, Sunday Aug. 2, 2020. It will mark the first splashdown in 45 years for NASA astronauts and the first return in the gulf. (SpaceX via AP)Two NASA astronauts are now back on Earth after a dramatic splashdown on Sunday. If you missed the NASA splashdown event, or want to watch it again, click here. RELATED: SpaceX capsule and NASA crew make 1st splashdown in 45 years