Butch Wilmore and Suni Williams left the International Space Station after nine months in space, checking out with two other astronauts.

NASA astronauts Butch Wilmore and Suni Williams are about to return to Earth from the International Space Station, where they have been living for nine months in a drawn-out mission fraught with technical challenges,

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.