Axiom 4 lifts off at 2:31 AM ET on Wednesday, January 25, 2025 Photo: Charles Boyer / Talk of Titusville
After several delays, Axiom 4 is on its way to the International Space Station. The corporate mission, commanded by NASA veteran Peggy Whitson, lifted off at 2:31 AM Eastern Time from Launch Complex 39A at Kennedy Space Center aboard a SpaceX Falcon 9 and Crew Dragon.
In addition to Whitson, Shubhanshu Shukla, an officer in the Indian Air Force and astronaut with the Indian Space Research Organisation (ISRO), will serve as the pilot. Mission specialists include Sławosz Uznański-Wiśniewski, a project astronaut with the European Space Agency (ESA) representing Poland, and Tibor Kapu from Hungary. Notably, this mission marks the first time astronauts from India, Poland, and Hungary will visit the ISS, representing each nation’s first government-sponsored human spaceflight in over 40 years.
After a nominal ascent, Booster B1094 returned to land at Cape Canaveral Space Force Station’s LZ-1 about secen minutes and thirty nine seconds from liftoff. A few seconds later, Falcon 9’s second stage and Crew Dragon were reaching their initial orbit, which will be modified later as Axiom 4 begins chasing down ISS in earnest.
Docking is expected Thursday morning, around 7:00 AM ET.
After docking with Station, Axiom 4’s crew will begin a two-week stay aboard ISS, where they will conduct a number of experiments on behalf of their respective space agencies.
Axiom-4 Mission Objectives
Ax-4 will be a busy mission, as it is slated to conduct approximately 60 scientific experiments and activities involving participants from 31 nations, such as the United States, India, Poland, Hungary, Saudi Arabia, Brazil, Nigeria, the United Arab Emirates, and various European countries. This marks the highest number of research initiatives undertaken on an Axiom Space mission to the International Space Station (ISS) thus far, highlighting the mission’s global importance and collaborative spirit in advancing microgravity research in low-Earth orbit (LEO).
The mission places a particular emphasis on scientific endeavors led by the countries represented in the Ax-4 crew, including the United States, India, Poland (in collaboration with the European Space Agency), and Hungary. The research conducted will enhance global understanding in areas such as human health, Earth observation, and life, biological, and material sciences, reflecting the space research capabilities of the crew’s home countries.
Axiom Space is also collaborating with research organizations and academic institutions to further investigate the effects of spaceflight on the human body and to explore how space-based research can lead to improvements in health and medical treatments on Earth. The mission underscores the significance of commercial and academic partnerships, as Axiom Space spearheads the development of a global research community and a sustainable economic ecosystem in LEO. The mission also sets the stage for Axiom Station, the first commercial space station, which will provide a permanent platform for research, manufacturing, and human spaceflight.
Axiom 4, the privately operated crewed spaceflight, now has a confirmed launch date of June 22, 2025. The mission is slated to lift off at 3:42 AM ET, from Launch Complex 39A at the Kennedy Space Center.
Originally scheduled for June 19, the flight window was pushed back as engineers addressed technical issues and concerns about the ISS leaks. The new timeline promises a mission duration ranging from 14 to 21 days to complete its planned research program.
“No one remembers launch delays, but no one ever forgets a real problem.”
–V.L. Pinson Sr., former ABMA and NASA veteran
The mission will utilize a Falcon 9 to carry the newly built Crew Dragon spacecraft C213 into low Earth orbit, marking the final Crew Dragon capsule to enter service in SpaceX’s original slate of capsules. The four-person crew—veteran astronaut Peggy Whitson commanding, Indian pilot Shubhanshu Shukla, ESA’s Sławosz Uznański-Wiśniewski, and Hungarian specialist Tibor Kapu—will conduct science and technology demonstrations aboard ISS during their flight.
Axiom Space first announced on April 3 that Ax-4 would launch no earlier than May, reflecting a cautious approach as technical reviews and ISS scheduling took shape.
By mid-April, the Ax-4 team was gearing up for a busy agenda aboard ISS with a target window of no earlier than late May. The packed schedule—includes biological experiments, materials science tests, and station maintenance tasks.
After some shifts to the right on the schedule, the mission stood ready to launch on June 10th, but weather in the ascent corridor forced mission managers to call of any launch attempt that day. The ascent corridor is the zone where Crew Dragon and its crew would land in the unlikely event of an abort. The zone extends offshore in the Atlantic Ocean from Kennedy Space all the way to Ireland, and weather inside it must be suitable — just in case.
The next day, the first launch attempt on June 11 was scrubbed after engineers detected a propellant leak in the rocket’s liquid oxygen system and called off the launch to remediate the issue.
Next, a pressure leak in the Zvezda service module on the ISS prompted NASA and Roscosmos to stabilize the module before approving further dockings, contributing to another postponement announced on June 12.
NASA, SpaceX and Axiom have now agreed on a launch attempt in the predawn hours of the first full day of summer: June 22nd. Falcon 9’s leaks have been resolved, the Space Station leak issue is now under control, and at this point, weather on the 22nd looks as though it will be acceptable for Axiom 4’s ascent into orbit.
The Indian Connection
For India’s space program, Ax-4 represents a milestone: it provides the first opportunity for an Indian astronaut to fly to ISS. Pilot and Indian Air Force Group Captain Shubhanshu “Shux” Shukla, part of ISRO’s cadre of astronauts, will carry out experiments developed by the Indian Space Research Organisation in fields ranging from microbial adaptation to muscle atrophy studies.
His flight will be the precursor to his upcoming flight aboard ISRO’s Gaganyaan-1, India’s first domestically built crewed orbital spacecraft. At 39, Shukla is a veteran test pilot, having flown everything from MiG-21s to Su-30s.
Gaganyaan capsule Photo: ISRO
One Of America’s Most Astronauts Commands
Tibor Kapu, courtesy Axiom Space
Axiom 4 will be commanded by Peggy Whitson—a former NASA chief astronaut and current Director of Human Spaceflight at Axiom Space—Ax-4 brings seasoned leadership to this venture. Whitson holds multiple Station records and is tasked with overseeing the flights to and from ISS. She has spent 665 days in space so far.
Poland and Hungary Returning To Spaceflight After 40 Years
Joining Whitson and Shukla is Sławosz Uznański, a Polish engineer and the first representative of his country in space since 1978. Back then, it was Mirosław Hermaszewski aboard a Soviet Soyuz. This time, it’s Uznański flying under the banner of the European Space Agency as a mission specialist. A former CERN engineer and ESA reserve astronaut, Uznański’s path to space was defined more by science than by spectacle. His role on Ax-4 emphasizes research, including a number of biomedical and Earth-monitoring experiments designed by Polish institutions.
Sławosz Uznański, courtesy Axiom Space
Hungary, too, is returning to space after a four-decade absence. Tibor Kapu, an engineer selected under the Hungarian government’s HUNOR program, became only the second Hungarian to ever fly in space. He beat out nearly 250 applicants for the role. The first, Bertalan Farkas, flew aboard a Soviet Soyuz spacecraft in 1980.
Kapu’s mission is both technical and symbolic. “This is not just a mission for Hungary,” he said before launch. “It’s for all the small nations looking toward the stars and asking if they can be part of the next chapter.”
Ax-3 On The Launch Pad. AX-4 will be almost identical Photo: Charles Boyer / Talk of Titusville
The fourth private mission to ISS is set to head to Station Wednesday morning at 8:22 AM ET, weather and technicals permitting. Weather offshore in the ascent corridor forced a scrub for Tuesday, due to unacceptable conditions on Falcon 9 and Crew Dragon’s path towards ISS.
The Mission
The mission—organized by Houston-based Axiom Space—represents a growing shift in space exploration: national pride and private enterprise, working hand in hand. It’s the first time astronauts from India, Poland, and Hungary will fly to the ISS, and the vehicle taking them there is no less historic. The Crew Dragon capsule, designated C213, is the final capsule SpaceX plans to build under its current production schedule. This is its first flight.
C213’s official name has not been released to the public, and tradition calls for the first crew to fly it to also name the spacecraft. Expect to hear that name prior to the launch tomorrow.
A SpaceX Crew Dragon on the launch pad earlier in 2024.
The Crew
Peggy Whitson, courtesy Axiom Space
Leading the crew is Peggy Whitson, a name already etched into American spaceflight history. A retired NASA astronaut and now Axiom’s Director of Human Spaceflight, Whitson has spent more time in orbit than any other American—675 days in total. She’s flown on both the Space Shuttle and Soyuz, and this marks her fifth trip to space. Despite all that experience, she said the diversity and ambition of this mission makes it feel new again.
“It’s an exciting time to be part of space exploration,” Whitson told reporters before launch. “This is about opening access, building partnerships, and pushing science forward.”
Shubhanshu Shukla, courtesy Axiom Space
Sitting beside Whitson in the cockpit is Indian Air Force Group Captain Shubhanshu Shukla, making history as the first Indian astronaut to visit the ISS. At 39, Shukla is a veteran test pilot, having flown everything from MiG-21s to Su-30s. He was part of India’s astronaut corps for the upcoming Gaganyaan program, and this mission is seen as a critical stepping stone for India’s human spaceflight ambitions.
For Shukla, the symbolism runs deep. “To represent India in this way is both humbling and thrilling,” he said. He’s carrying with him a suite of Indian microgravity experiments—including studies on tardigrade survival, plant growth, and stem cell behavior—that could lay the groundwork for India’s long-term research goals in orbit.
Sławosz Uznański, courtesy Axiom Space
Joining them is Sławosz Uznański, a Polish engineer and the first representative of his country in space since 1978. Back then, it was Mirosław Hermaszewski aboard a Soviet Soyuz. This time, it’s Uznański flying under the banner of the European Space Agency as a mission specialist. A former CERN engineer and ESA reserve astronaut, Uznański’s path to space was defined more by science than by spectacle. His role on Ax-4 emphasizes research, including a number of biomedical and Earth-monitoring experiments designed by Polish institutions.
Hungary, too, is returning to space after a four-decade absence. Tibor Kapu, an engineer selected under the Hungarian government’s HUNOR program, became only the second Hungarian to ever fly in space. He beat out nearly 250 applicants for the role. The first, Bertalan Farkas, flew aboard a Soviet Soyuz spacecraft in 1980.
Tibor Kapu, courtesy Axiom Space
Kapu’s mission is both technical and symbolic. “This is not just a mission for Hungary,” he said before launch. “It’s for all the small nations looking toward the stars and asking if they can be part of the next chapter.”
Together, the Ax-4 crew brings four national flags and a shared sense of purpose to orbit. Their flight to the ISS will last roughly 14 days and includes more than 60 research projects from 31 countries—an international science effort that spans biology, medicine, technology, and Earth science. The scope is ambitious: studies on glucose regulation that could impact diabetes treatment, advanced materials testing in zero gravity, and new methods for monitoring joint health in long-duration missions.
Trajectory
About 45 degrees from true north.
An easterly looking view of Axiom 4’s flight trajectory. The first stage activities are labeled. The second stage (and crew) will follow the arcing line over the horizon. Graphic: Charles Boyer using Google Earth Pro.
This is a Return to Landing Site mission, meaning Booster B1094 will be landing at Cape Canaveral Space Force Station on Landing Zone 1, the site of the old LC-13. A sonic boom will herald the arrival of the booster to the Space Coast.
Falcon 9’s booster flight profile for Axiom 4 Graphic: Charles Boyer using Google Earth Pro.
The Weather
The 45th Weather Squadron on Space Launch Delta 45 released their L-1 (one day prior to launch) forecast for Axiom 4: 95% go at the launch site, but a high risk in the ascent corridor.
This necessitated a scrub, with events now moved to NET Wednesday, June 11th. The weather on Wednesday is somewhat worse at the launch site: a 1-in-5 chance of a weather-related scrub at the launch site (80% GO) and only slightly better conditions on the spacecraft’s path towards orbit.
Why This Matters
If something goes wrong during launch (engine failure, system anomaly, etc.), the crew capsule—SpaceX’s Crew Dragon—has the ability to abort and separate from the rocket at any point in the ascent. After separation, it parachutes down into the Atlantic Ocean.
That means the entire flight path up the East Coast, from Florida to somewhere past Ireland, must have acceptable weather conditions for:
Rescue operations (search-and-rescue boats and helicopters need to reach the crew quickly)
Survivability (waves, wind, and visibility must not endanger the capsule or the astronauts)
Recovery asset safety (ships and aircraft can’t operate in dangerous storms)
Even if the launch pad weather is perfect, bad weather anywhere along the ascent corridor can delay a launch. NASA and SpaceX have multiple pre-designated splashdown zones, and each one must meet strict criteria for wind speeds, wave heights, lightning risk, and cloud cover during launch.
Privately Operated Missions: The Way of the Future
Axiom Space has carved out a unique model for missions like this. Unlike traditional government-led flights, the Ax-4 mission is privately operated and commercially funded, with participating countries contributing financially or technically in exchange for astronaut slots. This hybrid approach allows smaller spacefaring nations to engage in human spaceflight without launching their own rockets or building their own stations.
The capsule they’re riding in—Crew Dragon C213—is another milestone. It’s the fifth and final new Dragon that SpaceX plans to produce under its current human spaceflight program. From here on, the company will rely on reusing existing vehicles. That C213 is debuting with such a historic, multicultural mission underscores the symbolic weight of the moment.
Axiom Space released this rendering of Axiom Station
Axiom Space is also developing its own privately-owned commercially operated space station. Axiom Station is currently under construction. The first module, the Payload Power Thermal Module (PPTM), are scheduled to be launched to the International Space Station (ISS) no earlier than 2027, according to Axiom Space and Wikipedia. The Habitat One (Hab-1) module is expected to launch no earlier than 2028. The Axiom Station is planned to be a commercial space station, with Axiom Space aiming to start operating a free-flying platform as early as 2028.
Ax-4 Flight Plans
Once aboard ISS, the crew will be integrated into daily life on the station, conducting experiments while also taking time for public outreach and cultural exchange. Whitson noted that the crew has trained extensively not just in operations but in working across language and cultural lines—an increasingly relevant skill set in today’s globalized approach to space.
The crew’s return is scheduled for late June after a roughly two-week stay aboard the orbiting outpost, though the exact splashdown date will depend on weather and recovery conditions in the Pacific. SpaceX recently moved crew landing operations to the Pacific offshore from southern California due to finicky conditions here in Florida.
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