NASA astronauts Butch Wilmore and Suni Williams set out for a weeklong mission at the International Space Station last year. After nine months, they are coming home.

The International Space Station (ISS) is almost the size of a football field. It serves as a laboratory and living space for astronauts, including Sunita Williams and Butch Wilmore, who spent 9 months aboard stranded.

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.