What Went Wrong: Why the Starliner Astronauts Are Stuck in Space

Astronauts Sunita "Suni" Williams and Barry "Butch" Wilmore won't be returning home until 2025 .

The Boeing Starliner craft took off Sept. 28 for the International Space Station with only two astronauts aboard.

The mission was supposed to last for eight days and is now in its fifth month .

The astronauts will return to Earth next February on SpaceX's Crew Dragon capsule .

Boeing 's Starliner successfully completed its first manned test flight to the International Space Station .

Pilot Suni Wilmore : "You pinch yourself and you say, 'Hey, really the first flight of a spacecraft and all this that we’ve had the opportunity to take part in,' you know, you think, Lord, why me?" The Starliner faced numerous technical setbacks during production.

Butch Williams and Suni Wilmore left their luggage behind after space was needed to transport a pump to fix a malfunctioning toilet at their destination.

The pair took off with less than eight days' worth of personal items for what might end up being an eight-month trip.

Boeing said it remained "confident" in the craft's ability to return safely with crew.