The Boeing Starliner spacecraft successfully completed its uncrewed flight back to Earth, NASA announced overnight. The return ended the Starliner’s most recent flight test months later than intended and leaves its original crew, NASA astronauts Barry “Butch” Wilmore and Suni Williams, aboard the International Space Station until next year.

The two astronauts who crewed the Boeing Starliner have greeted their replacements, who arrived Saturday night at the International Space Station.

NASA astronauts Butch Wilmore and Suni Williams, whose intended 10-day stay at the International Space Station turned into nine months, welcomed SpaceX Crew 10 to the station over the weekend, setting the stage for Wilmore and Williams to return to earth as soon as this week.