SpaceX has successfully delivered the Crew Dragon capsule that will rescue stranded NASA astronauts Suni Williams and Butch Wilmore. The pair recently watched as their ride, Boeing's issues-laden Starliner,

SpaceX's two-person Crew-9 mission arrived at the International Space Station today (Sept. 29) after a one-day orbital chase.

Because NASA rotates space station crews approximately every six months, this newly launched flight with two empty seats reserved for Wilmore and Williams won’t return until late February. Officials said there wasn’t a way to bring them back earlier on SpaceX without interrupting other scheduled missions.