CAPE CANAVERAL, Fla.—Elon Musk’s private rocket company, SpaceX, was due to launch four more astronauts to the International Space Station for NASA on Wednesday, including a veteran spacewalker and two younger crewmates chosen to join NASA’s forthcoming lunar missions.
The SpaceX-built launch vehicle, consisting of a Crew Dragon capsule perched atop a two-stage Falcon 9 rocket, was set for liftoff at 9:03 p.m. from NASA’s Kennedy Space Center in Cape Canaveral, Florida.
