Barry Wilmore and Sunita Williams have been at the International Space Station since June after technical issues with their spacecraft.

NASA’s two stuck astronauts headed back to Earth with SpaceX on Tuesday to close out a dramatic marathon mission that began with a bungled Boeing test flight more than nine months ago. Butch Wilmore and Suni Williams bid farewell to the International Space Station — their home since last spring — departing aboard a SpaceX capsule alongside two other astronauts.

Astronauts Butch Wilmore and Suni Williams could be back on Earth as early as Tuesday, if all goes as planned for their return from space after nine months.