Tag: AX-4

Dragon capsule undocks from ISS carrying four Axiom’s passengers

8:47 am

After spending 18 days in space, 14 on ISS, the Dragon capsule early this morning undocked from ISS with a splashdown scheduled for early tomorrow.

The mission was financed by the space station company Axiom, and was commanded by former NASA astronaut Peggy Whitson, now employed by Axiom as a professional astronaut. The three paying passengers were all government astronauts from India, Poland, and Hungary.

The capsule, dubbed Grace, is the newest addition to SpaceX’s fleet of five manned reusable capsules, flying on its first mission.

Splashdown is scheduled for the wee hours of July 15th tomorrow off the coast of California. The live stream can be found here.

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Axiom’s manned mission docks with ISS

8:56 am

SpaceX’s newest manned Dragon capsule, dubbed Grace, this morning successfully brought Axiom’s fourth commercial passenger mission to ISS, docking with the space station after launching yesterday on a Falcon 9 rocket.

The spacecraft docked at 6:31 a.m. to the space-facing port of the space station’s Harmony module. Former NASA astronaut Peggy Whitson, ISRO (Indian Space Research Organisation) astronaut Shubhanshu Shukla, ESA (European Space Agency) astronaut Sławosz Uznański-Wiśniewski of Poland, and Tibor Kapu of Hungary now are aboard the space station after launching at 2:31 a.m. on June 25, on the company’s Falcon 9 rocket from Launch Complex 39A at NASA’s Kennedy Space Center in Florida for the fourth private astronaut mission to the orbiting laboratory, Axiom Mission 4.

The plan is for them to stay on ISS for two weeks.

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SpaceX launches Axiom’s fourth commercial manned mission to ISS

8:45 am

SpaceX last night successfully launched Axiom’s fourth commercial manned mission to ISS, dubbed Ax-4, its Falcon 9 rocket lifting off from the Kennedy Space Center in Florida.

The first stage completed its second flight, landing back at Cape Canaveral. The Dragon capsule, the newest and fifth ship in SpaceX’s fleet of manned capsule, was dubbed “Grace,” as announced by Axiom mission commander and former NASA astronaut Peggy Whitson. The three paying passengers are government astronauts from India, Hungary, and Poland.

The capsule will dock with ISS tomorrow (Thursday) at 7 am (Eastern), where it and its crew will spend about one to two weeks before returning to Earth.

The leaders in the 2025 launch race:

79 SpaceX
35 China
8 Rocket Lab
7 Russia

SpaceX now leads the rest of the world in successful launches, 79 to 58.

The overall lack of excitement about this manned space mission speaks directly to how successful SpaceX has become as a private commercial rocket company. Its rockets and capsules work routinely well, with almost no problems, making these manned space missions seem as boring as an airline trip from New York to Washington.

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NASA sets another new date for Axiom’s Ax-4 commercial manned mission to ISS

9:21 am

NASA today announced a new launch date of June 25, 2025 for Axiom’s Ax-4 commercial manned mission to ISS carrying a three passengers from India, Poland, and Hungary respectively and commanded by former NASA astronaut Peggy Whitson (now working for Axiom).

As with previous announcements, the information provided was sparse:

NASA, Axiom Space, and SpaceX are targeting 2:31 a.m. EDT, Wednesday, June 25, for launch of the fourth private astronaut mission to the International Space Station, Axiom Mission 4.

The mission will lift off from Launch Complex 39A at NASA’s Kennedy Space Center in Florida. The crew will travel to the orbiting laboratory on a new SpaceX Dragon spacecraft after launching on the company’s Falcon 9 rocket. The targeted docking time is approximately 7 a.m. Thursday, June 26. NASA will provide more details and its coverage information shortly.

The launch had previously been delayed several times because NASA and Russia wanted to first assess the repair work on the leaks in the Russian Zvezda module before allowing another docking at the station. No information however has been released so far detailing that assessment. Though there have been indications that the loss of air in ISS was stopped by the repair, neither NASA nor Roscosmos have provided any specific data.

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NASA delays Axiom manned mission again

9:11 am

Without providing any specific details, NASA today announced that it has once again scrubbed the June 22, 2025 launch of Axiom’s Ax-4 manned mission to ISS as it assesses the Russian repairs to the air leaks in the Russian Zvezda module.

The space agency needs additional time to continue evaluating International Space Station operations after recent repair work in the aft (back) most segment of the orbital laboratory’s Zvezda service module. Because of the space station’s interconnected and interdependent systems, NASA wants to ensure the station is ready for additional crew members, and the agency is taking the time necessary to review data.

No new launch date has been set. Because the agency provides so little specific information, we don’t know if the air leak repairs are working, are failing, or have indicated even more serious problems that make any station docking a greater risk. Almost certainly, this latter fear is unfounded and the repairs have succeeded in stopping or slowing the loss of air, but the paucity of information from NASA allows for wild speculations. It would be better if the agency told us what it has so far learned, and exactly why that knowledge requires it to extend the data-gathering time period.

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NASA/Axiom announce another four-day launch delay for Axiom’s fourth manned mission

8:55 am

NASA and Axiom today announced that they have rescheduled the launch of Axiom’s fourth manned mission to ISS, dubbed Ax-4, to June 22, 2025 in order to give Russian and American engineers more time to assess the leak repairs in the station’s Russian Zvezda module.

The press announcement provided little information, simply stating that:

The change in a targeted launch date provides NASA time to continue evaluating space station operations after recent repair work in the aft (back) most segment of the International Space Station’s Zvezda service module.

It would be nice if the agency would release some actual data. Earlier reports had suggested that the repairs had completely sealed the leaks and that the station was no longer losing air. The vagueness of today’s report suggests that the repairs might not have been as successful as hoped. It could also be engineers simply want more data for a longer period to prove the repairs have worked.

The lack of detailed information causes unnecessary speculation.

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Axiom manned flight to ISS rescheduled; NASA attempts to clarify ISS leak situation

9:26 am

In a NASA update today, it announced a new launch date of June 19, 2025 for Axiom’s fourth manned flight to ISS while also attempting to clarify ISS leak situation that caused this last and more extended delay.

On June 12, NASA and Axiom Space delayed the mission as the agency continued to work with Roscosmos to understand the most recent repair efforts to seal small leaks. The leaks, located in the aft (back) most segment of the International Space Station’s Zvezda service module, have been monitored by flight controllers for the past few years.

Following the most-recent repair, pressure in the transfer tunnel has been stable. Previously, pressure in this area would have dropped. This could indicate the small leaks have been sealed. Teams are also considering the stable pressure could be the result of a small amount of air flowing into the transfer tunnel across the hatch seal from the main part of space station. By changing pressure in the transfer tunnel and monitoring over time, teams are evaluating the condition of the transfer tunnel and the hatch seal between the space station and the back of Zvezda.

It appears, though NASA doesn’t say so directly, that the Russians did not wish to change the situation at ISS with another docking — even if it was a docking on the American half of the station — while it was evaluating these leak repairs. It now appears they have gotten enough data to allow NASA to set a new launch date later this week.

If the repairs have managed to stop the leaks this is excellent news. At the same time, it doesn’t reduce the risks of a catastrophic failure of Zvezda, since the existence of these numerous stress fractures in its hull suggest a chronic long term failure that can only worsen with time.

The sudden delay of Axiom’s AX-4 last week also indicates poor coordination between NASA and Roscosmos. It was as if NASA had no idea the repair work was occurring, either because it wasn’t paying attention to what the Russians were doing or because the Russians had kept this work secret until it was completed. In either case, this is not how such a partnership should operate.

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Axiom manned mission delayed further because of new Zvezda leaks on ISS

8:58 am

Figure 3 from September Inspector General report
Figure 3 from September Inspector General report, showing Zvezda’s location on ISS.

According to a press update today by NASA, the launch of the commercial Ax-4 manned mission to ISS has been further delayed due to work by the Russians attempting to seal new leaks in the station’s Zvezda module.

NASA and Axiom Space are postponing the launch of Axiom Mission 4 to the International Space Station. As part of an ongoing investigation, NASA is working with Roscosmos to understand a new pressure signature, after the recent post-repair effort in the aft most segment of the International Space Station’s Zvezda service module.

Cosmonauts aboard the space station recently performed inspections of the pressurized module’s interior surfaces, sealed some additional areas of interest, and measured the current leak rate. Following this effort, the segment now is holding pressure.

In other words, the Russians had recently detected an increase in leakage in the module, identified several more cracks inside Zvezda, and have been working to seal them.

The graphic above comes from a 2024 NASA inspector general report, which at that time noted a significant increase in the leak rate in 2024 (see the data in the lower right). Since then it has been NASA policy to close the hatch that connects the American and Russian sections of the station whenever anything docks with Zvezda, due to risk that the docking could cause the module to fail entirely.

Zvezda is one of the oldest modules on ISS, built in the late 1980s and launched in 2000. It is believed the leaks are due to stress fractures in its hull due to the many dockings and undockings that have occurred at its aft docking port.

If the NASA press release can be believed, the situation is under control and the repairs have been successful. If so, expect the Axiom mission to be rescheduled shortly.

If not, we could be witnessing the beginning of the end of ISS, five years earlier than planned by bureaucrats in Washington and Moscow.

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Axiom’s fourth commercial manned mission scrubbed due to leak

8:04 pm

Axiom and SpaceX have scrubbed the launch tomorrow of Axiom’s fourth commercial manned mission to ISS due to an oxygen leak detected during the standard prelaunch static fire test.

NASA, Axiom Space, and SpaceX are standing down from the launch opportunity on Wednesday, June 11, of Axiom Mission 4 to the International Space Station to allow additional time for SpaceX teams to repair a liquid oxygen leak identified during post-static fire Falcon 9 rocket inspections. A new launch date for the fourth private astronaut mission will be provided once repair work is complete, pending range availability.

There a number of launches already scheduled for Florida in the next few days, so it could be that the launch of Ax-4 could be delayed by more than a few days.

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Axiom charges $70 million per ticket to fly to ISS

9:08 am

Axiom's new module assembly sequence
Axiom’s assembly sequence for its planned station, initially attached to ISS but subsequently detached

According to this article today about Axiom’s tourist flights to ISS, the company now charges $70 million per ticket, which means that for the AX-4 flight scheduled for launch tomorrow, the revenues from India, Poland, and Hungary total about $210 million.

That money of course doesn’t all end up in Axiom’s pockets. It has to pay SpaceX for the launch and use of the Dragon capsule. It also has to pay NASA some recently imposed high fees to use its astronaut training facilities as well as lease time on ISS.

All told, I suspect Axiom’s profits for these flights is relatively small. The company however has other reasons to fly these missions. It is attempting to win NASA’s big space station construction contract, and these flights to ISS demonstrate the company’s ability to manage such operations while working with NASA. Of the other three space station projects competing for that contract, only Vast is planning to do the same.

This effort by these two companies is part of the reason I rank them first and second for winning that contract.

  • Haven-1, being built by Vast, with no NASA funds. The company is moving fast, with Haven-1 to launch and be occupied in 2026 for an estimated 30 days total. It hopes this actual hardware and manned mission will put it in the lead to win NASA’s phase 2 contract, from which it will build its much larger mult-module Haven-2 station..
  • Axiom, being built by Axiom, has launched three tourist flights to ISS, with a fourth scheduled for tomorrow, carrying passengers from India, Hungary, and Poland. Though there have been rumors it has cash flow issues, development of its first module has been proceeding more or less as planned.
  • Orbital Reef, being built by a consortium led by Blue Origin and Sierra Space. Overall, Blue Origin has built almost nothing, while Sierra Space has successfully tested its inflatable modules, including a full scale version, and appears ready to start building its module for launch.
  • Starlab, being built by a consortium led by Voyager Space, Airbus, and Northrop Grumman, with an extensive partnership agreement with the European Space Agency. It recently had its station design approved by NASA, but it has built nothing. This might change once it obtains several hundred million dollars from its initial public offering of stock.
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Axiom’s fourth commercial passenger flight to ISS delayed another two days

9:45 am

NASA, Axiom, and SpaceX yesterday announced that the launch of Axiom’s fourth commercial passenger flight to ISS, dubbed Ax-4, has been delayed two days to June 10, 2025.

NASA, Axiom Space, and SpaceX are targeting no earlier than 8:22 a.m. EDT on Tuesday, June 10, for launch of the fourth private astronaut mission to the International Space Station, Axiom Mission 4. This shift allows teams to account for predicted inclement weather during the SpaceX Falcon 9 rocket and Dragon spacecraft transport in addition to completing final processing of the spacecraft ahead of launch.

The Dragon capsule for this mission is new, and there had been delays in getting it built. Though weather is likely the biggest reason for this delay, it also sounds as if SpaceX has needed just a little bit of extra time to finalize the capsule’s construction.

The mission will fly one Axiom astronaut plus three passengers, each a government astronaut from India, Poland, and Hungary. It will spend about a week docked at ISS.

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Axiom’s next commercial manned flight to ISS delayed at least one week

9:06 am

NASA and Axiom have delayed the launch of the company’s fourth commercial manned flight to ISS by at least a week, from May 29 to June 8, at the earliest.

The NASA press announcement was decidedly vague about the reason:

After reviewing the International Space Station flight schedule, NASA and its partners are shifting launch opportunities for several upcoming missions. The schedule adjustments provide more time to finalize mission plans, spacecraft readiness, and logistics.

This report speculates that SpaceX might have had additional issues getting its brand new manned Dragon capsule ready on time, without out any clear evidence. The capsule has taken longer to build than originally predicted, but giving SpaceX one extra week seems insufficient if the capsule had some outstanding technical issues.

More likely it is exactly as NASA states, the delay is to accommodate the complex coming and going of vehicles to ISS.

The mission will launch one Axiom command pilot and three passengers, government astronauts from India, Poland, and Hungary.

This new manned Dragon, as yet unnamed, will bring SpaceX’s fleet of manned capsules to five, assuming it does not retire one of the older capsules. The company will thus have the largest manned spacecraft fleet ever, exceeding NASA’s four shuttle fleet that existed in the 1990s.

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Axiom signs deal with medical company to do diabetes monitor research on its next manned mission to ISS

11:53 am

Axiom today announced it has signed a deal with the medical company Burjeel Holdings to fly and test a glucose monitor during its May 2025 AX-4 manned mission to ISS.

The Ax-4 mission will utilize Continuous Glucose Monitors (CGMs), which have become the standard for glucose monitoring in individuals with diabetes. These devices will be tested to ensure their accuracy in microgravity, providing real-time data that will ultimately support the health of astronauts with insulin-dependent diabetes.The comprehensive preflight, inflight, and post flight protocols will employ various testing methods to validate these technologies. The Ax-4 mission also plans to look at insulin exposure in microgravity to assess the potency and stability of the drug product upon its return to Earth.

Testing the behavior of CGMs and insulin delivery technologies in microgravity and with circadian rhythm disruption is expected to advance the understanding of how such innovations can improve diabetes monitoring and care in remote or under served areas on Earth. Experts say this research will lay the groundwork for managing diabetes in isolated locations, such as oil rigs, deserts, or rural regions.

These tests will also make it possible for people who have diabetes to go into space. For Axiom, this will help widen its customer base. For Burjeel it proves its monitors can work in many remote and hostile environments, also widening its customer base.

Hat tip BtB’s stringer Jay, who adds that “This is cool since this is two companies and no NASA/government involvement.”

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SpaceX to use older Dragon capsule for next manned launch because of issues with new capsule

9:12 am

Ars Technica today reported that because of continuing battery issues with the new Dragon manned capsule, SpaceX now plans to use the older Endurance Dragon capsule for the next manned launch to ISS and prevent further delays in bringing home the two Starliner astronauts.

NASA now believes the vehicle will not be ready for its debut launch until late April. Therefore, according to sources at the agency, NASA has decided to swap vehicles for Crew-10. The space agency has asked SpaceX to bring forward the C210 vehicle, which returned to Earth last March after completing the Crew-7 mission.

Known as Endurance, the spacecraft was next due to fly the private Axiom-4 mission to the space station later this spring. Sources said SpaceX is now working toward a no-earlier-than March 12 launch date for Crew-10 on Endurance. If this flight occurs on time—and the date is not certain, as it depends on other missions on SpaceX’s Falcon 9 manifest—the Crew-9 astronauts, including Wilmore and Williams, could fly home on March 19. They would have spent 286 days in space. Although not a record for a NASA human spaceflight, this would be far longer than their original mission, which was expected to last eight to 30 days.

The new capsule will then be used for Axiom’s fourth commercial flight to ISS, AX-4, presently scheduled for later in the spring.

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The crew and passengers for Axiom’s fourth tourist flight to ISS

9:19 am

Axiom this week publicly introduced the international crew and passengers for its fourth tourist flight to ISS, presently planned for this spring.

During a Thursday press conference, former NASA astronaut and Axiom commander Peggy Whitson introduced her team. Shubhanshu Shukla will pilot the fourth mission to the ISS. He has been a fighter pilot for 15 years and will be the first Indian pilot to travel to the ISS.

The private mission also carries the first astronauts from Poland and Hungary to stay aboard the space station. Sławosz Uznański-Wiśniewski is an ESA astronaut representing Poland. Tibor Kapu is a mechanical engineer who was selected as an astronaut for Hungary’s Hungarian to Orbit (HUNOR) program in May of last year.

Axiom had made deals with India, Poland, and Hungary years ago to fly astronauts in space, and this flight fulfills those deals. Launched on SpaceX’s Falcon 9 rocket, their Dragon capsule will spend 14 days in space, most of which will be docked to ISS.

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Axiom’s next commercial manned mission to ISS delayed until 2025

9:26 am

Axiom’s next commercial manned mission to ISS, dubbed Ax-4, which had been targeting an October 2024 launch date, has now been delayed until 2025 because of “required interagency approval processes.”

NASA’s only announcement describing the delay was a tweet on X, which stated the following:

The Ax-4 crew members are pending approval to fly to the orbiting lab by the Multilateral Crew Operations Panel.

Neither Axiom nor NASA provided further comment or explanation. The mission will fly three passengers from India, Poland, and Hungary and be commanded by Peggy Whitson, a former NASA astronaut who now fulfills that role for Axiom. Since the three passengers are all government astronauts, it is possible that the bureaucracies from all three nations, plus NASA and its ISS partners, are entangled in negotiations far more complex than necessary.

This situation highlights quite clearly why both billionairs Jared Isaacman and Chun Wang have signed on with SpaceX to flight orbital missions — avoiding a docking with ISS — that require no permissions from NASA. Wang for example announced his deal yesterday, for a flight that is targeting a launch before the end of the year. Though that schedule is tight and might not be met, it appears the mission will likely fly before the Axiom one, which has been planned now for quite awhile.

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Hungary/Axiom finalize deal to fly a passenger on its AX-4 commercial manned mission to ISS

9:52 am

Hungary and Axiom have finalized their agreement to fly 32-year-old mechanical engineer Tibor Kapu on Axiom’s AX-4 commercial manned mission to ISS, presently targeting an October 2024 launch date.

That flight will use a Dragon capsule and last 14 days. Kapu would be the second Hungarian to ever fly in space, following Bertalan Farkas’s eight day mission in 1980 in a Soyuz capsule during the Soviet era.

Hungary and Axiom had worked out an initial agreement in 2022, with the country to pay the company $100 million for the flight. At that time the flight was to last 30 days, not two weeks. It was also unclear if the mission would be free-flying or dock with ISS, or even whether it would fly on a Dragon or Starliner capsule. There is no word on how these changes have impacted the price.

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NASA agrees to let Axiom fly a fourth private manned mission to ISS

10:10 am

NASA and Axiom have now signed a new agreement allowing Axiom to fly a fourth private manned mission to ISS, tentatively scheduled for no earlier than August 2024.

Through the mission-specific order, Axiom Space is obtaining from NASA crew supplies, cargo delivery to space, storage, and in-orbit resources for daily use. The order also accommodates up to seven contingency days aboard the space station. This mission is subject to NASA’s pricing policy for the services that are above space station baseline capabilities.

The order also identifies capabilities NASA may obtain from Axiom Space, including the return of scientific samples that must be kept cold and other cargo, and the capability to use the private astronaut mission commander’s time to complete NASA science or perform tasks for the agency.

The company has already hired SpaceX to provide the transportation to and from ISS, using its Falcon 9 rocket and one of its fleet of four manned Dragon capsules.

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