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.

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.

The NASA-SpaceX spacecraft, carrying Crew-9 members NASA astronaut Nick Hague (commander) and Roscosmos cosmonaut Aleksandr Gorbunov (mission specialist), was on its way to the International Space Station (ISS) on Sunday,