NASA astronaut Nick Hague, the mission's commander, and Roscosmos cosmonaut Aleksandr Gorbunov, a mission specialist, are currently in isolation as part of a pre-flight quarantine to avoid any illness before joining the Expedition 72 crew aboard the space station.

This will mark Hague's third launch and second mission to the station, while Gorbunov will make his first trip to space.

As part of Crew-9, Hague and Gorbunov will join NASA astronauts Suni Williams and Butch Wilmore, who have been aboard the space station since June after arriving on the Starliner spacecraft.

The two astronauts are expected to arrive at NASA's Kennedy Space Center in Florida this weekend, where they will stay in quarantine at the Neil A. Armstrong Operations and Checkout Building until launch.

Crew-9 is the ninth crew rotation mission to the space station with SpaceX under NASA's Commercial Crew Program. The crew is set to spend about five months on the orbiting laboratory, conducting spacewalks, research, and experiments before returning to Earth in February 2025 with Williams and Wilmore.

Backup launch dates are set for Friday, Sept. 27, and Saturday, Sept. 28.