NASA astronauts Suni Williams and Butch Wilmore were on the International Space Station more than nine months, despite launching into space in June for what was expected to be an eight-day mission.

NASA removed two astronauts from its Crew-9 mission to allow for Williams and Wilmore to join the cohort, and return onboard the SpaceX Dragon − which carries four people at a time. The altered Crew-9 − only Hague and Gorbunov − launched aboard the SpaceX Dragon Freedom in late September.

NASA astronauts Butch Wilmore and Suni Williams are set to splash down off the coast of Florida on Tuesday just before 5 p.m. CDT.