NASA will call on SpaceX to bring home two astronauts who have been stuck on the International Space Station since early June after their Boeing spacecraft ran into several problems midflight, the agency said Saturday.

The decision for astronauts Butch Wilmore and Suni Williams to hitch a ride back to Earth on a SpaceX Crew Dragon capsule, rather than on the Boeing Starliner spacecraft that they rode into orbit, puts to rest months of speculation and tension within the space agency over how…