The Crew-10 mission will send four astronauts to the space station to take over for Butch Wilmore and Suni Williams’ crew, finally allowing their return home.

The next available launch opportunity is no earlier than 7:26 pm EDT on Thursday, from Launch Complex 39A at NASA Kennedy, pending review of the issue, according to the statement released by NASA.

Two NASA astronauts who have been in space for more than nine months awaiting a return trip to Earth are finally set to come home. Suni Williams and Butch Wilmore — who have been aboard the International Space Station since last June last year — are due to undock with the SpaceX Crew-9 on March 16,