NASA will wait at least another two days to launch its next space station crew, delaying the return of Starliner astronauts Barry "Butch" Wilmore and Sunita Williams a bit longer.

Astronauts Suni Williams and Butch Wilmore, who have been stranded at the International Space Station for nine months, will finally return to Earth on Tuesday, one day earlier than expected.

After a nine-month-long overstay, NASA astronaut Sunita Williams and Butch Wilmore are set to return to Earth tomorrow, with the crew slated to undock from the International Space Station (ISS) today.

The International Space Station (ISS) is almost the size of a football field. It serves as a laboratory and living space for astronauts, including Sunita Williams and Butch Wilmore, who spent 9 months aboard stranded.

Suni Williams and Butch Wilmore were only supposed to be in space for 8 days. Williams has family on Cape Cod.

Astronauts Butch Wilmore and Suni Williams are set to return to Earth Tuesday evening after a nine-month stint at the International Space Station.