Hague and Gorbunov arrived at the station in late September, on SpaceX's Crew-9 mission. Williams and Wilmore have been in orbit since early June, when they launched on the first crewed mission of Boeing's Starliner spacecraft.

NASA and SpaceX's Crew-10 – containing four international astronauts – are expected to reach the International Space Station shortly after midnight on Sunday. The spacecraft launched from Florida's Kennedy Space Center on Friday night to begin the 26-hour journey to the ISS.