NASA and SpaceX on Friday launched a long-awaited crew to the International Space Station that opens the door to bringing home U.S. astronauts Butch Wilmore and Suni Williams, who have been stuck on the orbital lab for nine months.

A SpaceX Dragon capsule, riding atop one of the company’s Falcon 9 rockets, carried the four Crew-10 astronauts — NASA’s Anne McClain and Nichole Ayers, Takuya Onishi of the Japan Aerospace Exploration Agency,

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.