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.

A Dragon capsule undocked from the International Space Center early Tuesday, sending NASA astronauts Suni Williams and Butch Wilmore on their way home after being stranded on the orbital laboratory for nine months.