A SpaceX Falcon 9 rocket is on the pad for Tuesday’s planned launch of the “Polaris Dawn” mission. The four-member crew will use a Crew Dragon spacecraft to reach the highest Earth orbit flown since the Apollo program. The capsule was previously used to launch the Crew-1 and Inspiration4 missions.

SpaceX has again delayed the launch of a rocket carrying four private astronauts to space, part of a groundbreaking mission aimed at performing the world’s first commercial spacewalk.