After nine months stranded on the ISS, astronauts Butch Wilmore and Suni Williams are closer to returning home as a replacement crew docked with the station. They were aboard the ISS for an extended mission due to propulsion issues with their Boeing Starliner spacecraft.

Butch Wilmore and Sunita Williams expected to be gone just a week when they launched on Boeing's first astronaut flight. They hit the nine-month mark earlier this month