After their weeklong journey turned into a monthslong stay on the International Space Station, two Boeing Starliner astronauts will soon be united with the spacecraft that will eventually bring them home.

NASA astronaut Nick Hague and Roscosmos cosmonaut Aleksandr Gorbunov boarded the ISS shortly after the Dragon capsule docked at the station at 2130 GMT, NASA said in a post on X. The SpaceX Crew-9 mission was supposed to transport four astronauts to the ISS until two empty seats had to be opened up for Wilmore and Williams after the Boeing Starliner capsule they arrived on in June was deemed unfit to return them to Earth.

After multiple delays, NASA’s SpaceX Crew-9 mission finally launched two astronauts into space on Saturday from Cape Canaveral.The mission took off at 1:17 p.m. on a SpaceX Crew Dragon spacecraft, carrying NASA astronauts Nick Hague and Roscosmos cosmonaut Aleksandr Gorbunov to the International Space Station.

Because NASA rotates space station crews approximately every six months, this newly launched flight with two empty seats reserved for Wilmore and Williams won’t return until late February. Officials said there wasn’t a way to bring them back earlier on SpaceX without interrupting other scheduled missions.

The SpaceX capsule will eventually bring home Butch Wilmore and Suni Williams, the NASA astronauts who piloted the Boeing Starliner test flight.

The two astronauts stuck at the International Space Station since June welcomed their new ride home with Sunday’s arrival of a SpaceX capsule. SpaceX launched the rescue mission on Saturday with a downsized crew of two astronauts and two empty seats reserved for Butch Wilmore and Suni Williams,

SpaceX's two-person Crew-9 mission is scheduled to arrive at the International Space Station today (Sept. 29), and you can watch the action live.