Station Crew Awaits Ax-1 Departure and Crew-4 Launch

International Space Station Configuration. Six spaceships are parked at the space station including the SpaceX Dragons Endurance and Endeavour; the Northrop Grumman Cygnus space freighter; and Russia's Soyuz MS-21 crew ship and the Progress 79 and 80 resupply ships.
International Space Station Configuration. Six spaceships are parked at the space station including the SpaceX Dragons Endurance and Endeavour; the Northrop Grumman Cygnus space freighter; and Russia’s Soyuz MS-21 crew ship and the Progress 79 and 80 resupply ships.

The integrated NASA, Axiom Space, and SpaceX teams have agreed on a plan for the Axiom Mission 1 (Ax-1) crew to undock from the International Space Station at 8:35 p.m. EDT Saturday, April 23, for a splashdown off the coast of Florida about 1:46 p.m. Sunday, April 24. The decision was made based on the best weather for splashdown of the first private astronaut mission to visit the International Space Station and the return trajectory required to bring the crew and the SpaceX Dragon Endeavour spacecraft back to Earth safely.

NASA will provide live coverage of departure activities beginning at 6:15 p.m. Saturday, April 23, with hatch closure targeted for 6:30 p.m. Coverage will resume at 8:15 p.m. for the undocking. Teams will continue to monitor weather at the splashdown sites prior to undocking to ensure conditions are acceptable for a safe recovery of the Ax-1 astronauts and Dragon spacecraft.

NASA and Axiom mission planning prepared for the possibility of additional time on station for the private astronauts, and there are sufficient provisions for all 11 crew members aboard the space station. The Ax-1 crew continues to work through previously planned mission activities. The Ax-1 crew and Dragon spacecraft remain healthy.

The departure of Dragon Endeavour from the space station will clear the docking port for the arrival of Dragon Freedom and NASA’s SpaceX Crew-4 astronauts. The earliest potential launch opportunity for the Crew-4 mission is 4:15 a.m. Tuesday, April 26, with additional opportunities Wednesday, April 27, and Thursday, April 28. These launch opportunities are undergoing a more detailed program review to ensure they align with integrated operational timelines. The teams want to provide a two-day gap after Ax-1 return for data reviews from splashdown and to prepare for the Crew-4 launch, including the staging of recovery assets.

The Crew-4 astronauts spent last night at the Kennedy Space Center in Florida rehearsing the countdown to their launch inside the SpaceX Dragon Freedom, the company’s newest crew ship. Overnight, Crew-4 Commander Kjell Lindgren, Pilot Robert Hines with Mission Specialists Jessica Watkins and Samantha Cristoforetti, put on their pressure suits and entered their vehicle conducting a successful dry dress rehearsal. The Falcon 9 rocket, with the Freedom perched atop, stands at Launch Complex 39A.

Expedition 67 crewmates Raja Chari and Tom Marshburn, who are also the SpaceX Crew-3 commander and pilot respectively, spent a little time on Wednesday with their upcoming departure activities. The pair, along with Kayla Barron of NASA and Matthias Maurer of ESA, will wait for the arrival of their Crew-4 replacements before returning to Earth a few days later inside the Dragon Endurance vehicle. The four astronauts had a light-duty day on Wednesday scheduling in some housecleaning tasks.

Over in the Russian segment of the station, cosmonauts Oleg Artemyev and Denis Matveev wrapped up their post-spacewalk activities today stowing their tools and discussing the excursion with specialists on the ground. The duo kicked off a series of spacewalks on April 18 to configure the European robotic arm for operations on the Nauka multipurpose laboratory module. Roscosmos Flight Engineer Sergey Korsakov started his day with electronics and communications maintenance before studying future spacecraft and robotic piloting techniques in the afternoon.

NASA to Air First Private Astronaut Mission to Station

SpaceX's Falcon 9 rocket and Crew Dragon Endeavor stand ready for Axiom Space's Axiom Mission 1 at Kennedy Space Center's Launch Complex 39A in Florida.
A SpaceX Falcon 9 rocket with the company’s Crew Dragon spacecraft aboard is seen at sunrise on the launch pad at Launch Complex 39A as preparations continue for Axiom Mission 1 (Ax-1), Thursday, April 7, 2022, at NASA’s Kennedy Space Center in Florida. Photo credit: NASA/Joel Kowsky

NASA and Axiom Space will provide coverage of launch and select mission activities for Axiom Mission 1 (Ax-1), the first private astronaut mission to the International Space Station.

Liftoff is scheduled at 11:17 a.m. EDT Friday, April 8, from Launch Complex 39A at NASA’s Kennedy Space Center in Florida.

Coverage begins on NASA Television, the NASA app, and the agency’s website beginning at 10:15 a.m. EDT Friday, April 8. Coverage will join the Axiom Space broadcast that begins at about 7:50 a.m. The broadcast will end after orbital insertion approximately 15 minutes after launch.

Weather officials with the 45th Weather Squadron are predicting a 90% chance of favorable weather conditions for launch, with the primary concern being liftoff winds. Teams also are monitoring the down range weather for the flight path of the Crew Dragon.

Ax-1 crew members, Commander Michael López-Alegría of the U.S. and Spain, Pilot Larry Connor of the U.S., Mission Specialist Eytan Stibbe of Israel, and Mission Specialist Mark Pathy of Canada, will launch on a flight-proven SpaceX Falcon 9 rocket aboard SpaceX Dragon Endeavour on its third flight to station.

Leaders from NASA, Axiom Space, and SpaceX will participate in a postlaunch media briefing to provide an update on the launch and mission operations. The briefing is targeted to begin at 12:30 p.m. EDT, or about one hour following launch.

During the 10-day mission, eight of which will be spent aboard the orbiting laboratory, the crew will complete more than 25 science experiments and technology demonstrations developed for a microgravity environment.

NASA is working to build a robust low-Earth orbit economy and working with private companies to support the agency’s goals. In doing so, NASA can become one of many customers of this robust economy as the agency focuses on landing the first woman and first person of color on the lunar surface as part of the Artemis program.

To follow along with the Ax-1 mission, visit and the Ax-1 Briefings, Events and Broadcast Schedule. NASA will release a separate advisory at a later date to preview the Ax-1 farewell event and return coverage.

For more information about NASA’s low-Earth orbit commercialization activities, visit: