WASHINGTON (Reuters) - A SpaceX capsule delivered four astronauts to the International Space Station early on Sunday in a NASA crew-swap mission that will allow a pair of stuck astronauts, Butch Wilmore and Suni Williams, to return home after nine months on the orbiting lab.

The NASA-SpaceX Crew-10 mission, launched on March 15, docked with the ISS on March 16, replacing astronauts Sunita Williams and Barry Wilmore who have been stranded for nine months. The crew includes NASA's Anne McClain and Nichole Ayers,

A SpaceX crew capsule successfully docked at the ISS, bringing in a new team to replace two Nasa astronauts who have been stranded for over nine months. Technical issues with their Boeing vehicle delayed their return,