The replacements for NASA's two stuck astronauts are on their way to the International Space Station aboard the Crew Dragon, which launched from Kennedy Space Center.

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

NASA astronauts Butch Wilmore and Suni Williams arrived at the ISS aboard Boeing's Starliner spacecraft last June. The duo were flying the capsule's first crewed flight test, which was expected to stay in orbit for about 10 days before flying the pair back to Earth.