The crew-swap mission will enable NASA’s Butch Wilmore and Suni Williams to return to Earth from the International Space Station.

The four-person Crew-10 aboard the SpaceX capsule reached the ISS on Sunday; NASA astronauts Williams and Wilmore scheduled to undock by Wednesday

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,