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.

Starliner astronauts Suni Williams and Butch Wilmore, who were stranded at the International Space Station for nine months, are back on Earth after splashing down Tuesday off the coast of Florida.

Astronauts Butch Wilmore and Suni Williams were scheduled to return home last year before issues with Boeing’s spacecraft extended their stay.