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SpaceX Ax-2 private astronaut mission is ‘go’ for May 21 launch

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The second-ever private astronaut mission to the International Space Station (ISS) remains on track to lift off this weekend.

NASA, SpaceX and Houston company Axiom Space held a flight readiness review (FRR) today (May 15) for the Ax-2 mission, which is scheduled to launch four people toward the International Space Station on Sunday afternoon (May 21).

“At the end of that review, the full team polled ‘go,'” Ken Bowersox, associate administrator for NASA’s Space Operations Mission Directorate, said during a post-FRR press conference this afternoon.

If all goes according to plan, Ax-2 will launch atop a SpaceX Falcon 9 rocket at 5:37 p.m. EDT (2137 GMT) on Sunday from NASA’s Kennedy Space Center (KSC) in Florida. The Ax-2 astronauts will ride a SpaceX Dragon capsule to the orbiting lab, getting there around 9:30 a.m. EDT (1330 GMT) on Monday (May 21).

Related: SpaceX to launch 1st Saudi woman to space on private Ax-2 mission 

The mission will spend eight days docked to the ISS, team members said today. That’s a slight change from the previous plan, which had called for a 10-day ISS stay.

If Ax-2 can’t get off the ground on Sunday, it has another chance on Monday (May 22). If the mission misses that backup opportunity, however, it will have to wait a while to get to space: NASA and SpaceX will then shift toward preparing for the launch of CRS-28, SpaceX’s 28th robotic cargo mission to the ISS, which is slated to lift off from KSC on June 3.

“And then, at that time, Axiom, NASA and SpaceX will get together and look for the next best opportunity as we look at the missions that we have this summer,” Joel Montalbano, manager for NASA’s International Space Station Program, said during today’s telecon.

Those other flights include crewed jaunts to the ISS such as Boeing’s Crew Flight Test (currently targeted for July 21) and SpaceX’s Crew-7 mission, as well as “other missions that use the pad facilities at Kennedy Space Center,” Montalbano said.

The crew of Axiom Space’s Ax-2 mission on SpaceX’s crew access arm at Launch Pad 39A. at NASA’s Kennedy Space Center in Cape Canaveral, Florida. They are (from left): Saudi astronaut Ali Alqarni; commander Peggy Whitson; pilot John Shoffner; Saudi astronaut Rayyanah Barnawi. (Image credit: Axiom Space)

As its name suggests, Ax-2 will be the second crewed flight to the ISS operated by Axiom Space using SpaceX hardware. The first, Ax-1, sent four people to the orbiting lab for more than two weeks in April 2022.

Ax-2 is groundbreaking in its own way as well. Two of the mission’s crewmembers are Rayyanah Barnawi and Ali AlQarni, who will become the first Saudi Arabians to visit to the ISS. Barnawi will be the first Saudi woman ever to reach space. 

The other crewmates are investor and paying customer John Shoffner and former NASA astronaut Peggy Whitson, who now works for Axiom and will command the mission. Whitson has racked up a total of 665 days off Earth — more than any other American and any other woman.

NASA currently requires that all private astronaut flights to the ISS be led by a former agency spaceflyer. Ax-1 was commanded by Michael López-Alegría, who racked up four spaceflights while working for NASA.

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