SpaceX flew astronauts for the first time in 2020, and Boeing reached the same milestone with the test flight that launched in June. Ultimately, the Starliner spacecraft safely returned to Earth on September 6 with a successful landing in New Mexico.

The SpaceX Dragon, selected by NASA to transport astronauts Suni Williams and Butch Wilmore home, arrived Sunday at the International Space Station.

SpaceX’s Crew Dragon capsule arrived safely at the International Space Station on Sunday, where it will eventually ferry the two Boeing Strainer astronauts who have been stuck in space for months