Tag: JAXA

Japan to do vertical tests of its own Grasshopper-type demo stage this month

9:13 am

Japan’s space agency is about to attempt two test vertical take-off-and-landing test flights of of its own Grasshopper-type demo stage, dubbed RV-X later this month.

First flight of a small experimental version of a reusable launch vehicle has been scheduled for March 6 by the Japan Aerospace Exploration Agency (JAXA). The 24-ft.-tall vertical-takeoff-and-vertical-landing (VTVL) RV-X is planned to make a short hop at the agency’s Noshiro Rocket Testing Center on the Sea of Japan coast.

RV-X is the first of two flight experiments planned by JAXA on the path to development of a reusable first stage for a next-generation launch vehicle. A second vehicle is planned to fly in 2027 under the multinational Callisto program.

Callisto is being developed jointly with the European Space Agency. Both it and RV-X have been in development for about a decade. Both were initiated in response to SpaceX’s successful reuse of its Falcon 9 first stage. Both projects however appeared stalled until the last two years or so, with little happening.

The JAXA engine on RV-X is apparently the engine it is providing for Callisto. If the flight tests are successful this March, it will be the be transferred to French Guiana for Callisto tests planned no sooner than ’27.

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JAXA releases preliminary results of investigation into December 2025 H3 rocket launch failure

8:01 am

Japan's space agency JAXA

JAXA yesterday released the preliminary results of its investigation into upper stage failure during the December 2025 launch of its H3 rocket.

Previously the agency had indicated it believed the cause was linked to the separation of the rocket’s payload fairings. This new report changes that conclusion:

After liftoff, the No. 8 H3 rocket sustained damage to the section where the Michibiki No. 5 positioning satellite was mounted, when the satellite cover, called fairing, was separated.

In addition, the fuel tubing of the rocket’s second-stage engine was damaged, presumably causing combustion to stop earlier than planned, JAXA said in a progress report on its investigation into the failure at a meeting of a subgroup of a science ministry panel.

As the section was damaged, the satellite was no longer attached to the second stage of the rocket. The satellite fell off when the first stage separated.

In other words, as the fairings released, the satellite apparently deployed, damaging the fuel feed to the upper stage engine. It is as yet unclear whether the deployment system worked as intended, but did so prematurely, or if it failed entirely, allowing the satellite to fall away once the fairings separated.

At the moment Japan has no launch capability. Both of JAXA’s rockets, the H3 and the Epsilon-S are grounded due to launch failures. Meanwhile, the country has only recently begun to develop private launch companies, none of which are ready to launch.

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Japan’s government gives Ispace a $125 million contract to build a high-precision lunar lander

8:30 am

Is this the first sign that Japan's space agency JAXA is becoming irrelevant?
Is Japan’s failed space agency JAXA finally
starting to become irrelevant?

The Japanese lunar lander startup Ispace last week announced it has won a $125 million contract to build a high-precision lunar lander targeting a 2029 launch in the Moon’s “polar regions”.

Ispace, inc, a global lunar exploration company, announced that the company was selected to implement its proposal for “High Precision Landing Technology in the Lunar Polar Regions” project under the second phase of Japan’s Space Strategy Fund. The technology will be implemented in ispace’s Mission 6, with development now underway.

The funding amount is subject to change based on stage gate reviews and other factors, so full receipt is not guaranteed at this time.

The mission will also include a lunar orbiter that will act as a relay communication satellite that will also remain in orbit after the mission to provide communications for future missions, not only for polar missions but for missions to the Moon’s far side.

Ispace plans to use some of the technology it is developing for its 2nd generation lunar lander, scheduled to fly in ’28.

This contract is significant because it appears to leave ownership of the project entirely in Ispace’s hands, with Japan’s space agency JAXA having little design or management control. It also appears to use the funds from country’s ten-year $6.6 billion fund as intended. That fund was established in 2023 to support new space startups under the capitalism model, whereby the companies provide the product and government and JAXA are merely the customer.

Up until now it appeared this fund was accomplishing little. In fact, there have been indications that JAXA was trying to repurpose the fund for its own benefit, using it to hire a lot more staff while maintaining control and ownership of any project, rather than let the private sector own its own work.

Since JAXA has increasingly done a very bad job promoting Japan’s space exploration industry, those indications were a very bad sign for Japan’s future in space.

This deal appears however to use that strategic fund properly, even if JAXA might still be skimming a large percentage of the fund off the top. This is not unlike what NASA has been doing. Bureaucrats must be bureaucrats, and all government agencies must be eternal and immortal, no matter what.

Like NASA, however, the success of Ispace and rest of Japan’s private space sector from projects financed by this fund will eventually allow that private sector to make those bureaucrats and JAXA irrelevant. It is happening now in the U.S. It now appears there is a chance it will happen in Japan as well.

Hat tip to BtB’s stringer Jay.

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JAXA identifies cause of H3 rocket failure

9:44 am

In releasing today the preliminary results of its investigation into the failure on December 21, 2025 of the upper stage of its H3 rocket, Japan’s space agency pinned the likely cause on the rocket’s fairings.

Japan Aerospace Exploration Agency officials told a science ministry panel on Dec. 23 they suspect an abnormal separation of the rocket’s payload fairing—a protective nose cone shield—caused a critical drop in pressure in the second-stage engine’s hydrogen tank.

Engineers think the fairing might have hit the rocket at separation, damaging the tank.

Japan at present has no way to launch payloads. It has no operating independent commercial rocket companies, and its JAXA-owned H3 and Epsilon-S rockets have had repeated problems. The H3 failed on its first launch in 2023, causing a year-long delay, and Epsilon-S still in limbo because of repeated failures during development.

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Three launches and one scrub overnight

8:38 am

Falcon 9 1st stage after landing for 30th time
Falcon 9 1st stage after landing for 30th time

In the past twelve hours there was one launch abort at T-0 and three successful launches.

First, Japan’s space agency JAXA attempted to launch a GPS-type satellite using its H3 rocket, built by Mitsubishi. The countdown reached T-0 but then nothing happened. The launch was then scrubbed because of an issue in the ground systems. No new date was announced.

Next, Arianespace, the commercial division of the European Space Agency (ESA), launched two European Union GPS-type satellites, Galileos 33 and 34, its Ariane-6 rocket lifting off from French Guiana.

This was Arianespace’s seventh launch in 2025, the most it has achieved since 2021, though still about 20-30% lower than the numbers it generally managed in the 2010s.

Finally, SpaceX followed with two launches on opposite coasts. First, its Falcon 9 rocket launched 29 Starlink satellites from the Kennedy Space Center in Florida, the first stage completing its sixth flight by landing on a drone ship in the Atlantic.

Shortly thereafter the company launched another 27 Starlink satellites, its Falcon 9 rocket lifting off from Vandenberg Space Force Base in California. The first stage (B1063) completed its 30th flight, landing on a drone ship in the Pacific. This stage is now the third Falcon 9 booster to reach 30 reuses:
» Read more

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Japan launches a new upgraded version of its HTV cargo freighter

5:14 pm

Japan today (October 26th in Japan) successfully launched to ISS a new upgraded version of its HTV cargo freighter, its H3 rocket lifting off from its Tanegashima spaceport in southern Japan.

The HTV-X1 carries more than freight. After its cargo is unloaded at ISS it will spend an additional three months flying independently in orbit, where engineers will conduct three additional experiments. JAXA, Japan’s space agency, hopes it can market HTV-X1 for use by the commercial space stations presently being developed. It is also marketing it as a potential orbital capsule that others can use for in-space manufacturing.

This was only the third launch by Japan in 2025, so there is no change to the 2025 leader board:

138 SpaceX
64 China
13 Russia
13 Rocket Lab

SpaceX now leads the rest of the world in successful launches, 138 to 106.

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Germany’s space agency DLR delivers one prototype leg for Europe’s Callisto grasshopper

8:45 am

Callisto's basic design
Callisto’s basic design

Government in-action: After a decade of work, the German space agency DLR this week finally delivered for testing a prototype leg of the Callisto grasshopper-type demo rocket, intended by the European Space Agency (ESA) to demonstrate vertical take-off and landing.

On 9 October, the Institute of Structures and Design announced that it had delivered a qualification model of the demonstrator’s landing leg to the Institute of Space Systems in Bremen. According to a 3 December 2024 update, the leg will now undergo a series of tests at the Institute’s Landing and Mobility Facility, including deployment, touchdown, and vibration testing.

Once the qualification test campaign is complete and the landing leg design has been validated, the Institute of Structures and Design will proceed with the construction of the four flight-ready legs.

Note again that Callisto, as shown to the right, was proposed as a joint ESA and JAXA project in 2015. Only now, a decade later, as DLR delivered one prototype leg. The first test hop has been repeatedly delayed, so that now it is now not expected to happen until 2027, and that rocket will not even be an operational version, it will simply be a small scale prototype.

Meanwhile, SpaceX has landed its Falcon 9 first stage hundreds of times, and reused them dozens of times. Other companies are flying or building their own reusable rockets, and hope to fly operational versions next year.

The contrast between this government project and the private sector is quite embarrassing. What makes it even more embarrassing is that it is par for the course, and yet so many people still look to the government as the god who can get things done. When will people learn?

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Rocket Lab gets two-launch contract from Japan’s space agency JAXA

10:07 am

In what appears to be a significant slap at its own rockets (especially its delayed Epsilon-S rocket), Japan’s space agency JAXA this week signed a two-launch deal with the American rocket company Rocket Lab.

Launching from Rocket Lab Launch Complex 1 in New Zealand, the two Electron missions will deploy satellites for JAXA’s Innovative Satellite Technology Demonstration Program. The first launch, scheduled from December 2025, will deploy the agency’s RApid Innovative payload demonstration SatellitE-4 (RAISE-4) spacecraft, a single satellite that will demonstrate eight technologies developed by private companies, universities, and research institutions throughout Japan.

The second launch, scheduled for 2026, is a JAXA-manifested rideshare of eight separate spacecraft that includes educational small sats, an ocean monitoring satellite, a demonstration satellite for ultra-small multispectral cameras, and a deployable antenna that can be packed tightly using origami folding techniques and unfurled to 25 times its size.

Rocket Lab has previously won contracts from several private Japanese satellite companies (Q-Shu, Astroscale, ALE), but this I think is the first JAXA contract it has won. What makes it significant is that JAXA has always focused on using its own rockets, the large retired H2A and the new H3 as well as the smaller Epsilon-S. To go to an American company is somewhat unprecedented.

Though larger than Rocket Lab’s Electron rocket, Epsilon-S was being developed to compete for the same market. That development however has been plagued by failure, including explosions of engines during tests of both its upper and first stages in ’23 and ’24 respectively. After the second explosion JAXA announced in December 2024 the rocket’s first launch would not occur in the spring of 2025 as planned, but provided no additional information. Since then there have been no updates.

This Rocket Lab deal suggests the Epsilon program is in big trouble. In the long run however this might be a very good thing for both JAXA and Japan’s own nascent rocket industry. JAXA might finally be recognizing that building and owning its own rockets is not the best plan, that it would be better to use the capitalism model and simply be a customer buying the services from the private sector. At the moment Japan doesn’t yet have a viable commercial rocket sector, with only Mitsubishi having an operational commercial rocket, the H3 (mostly controlled by JAXA). There are a number of new startups however, including Interstellar, Honda, Space One, and Tispace, all of which have done tests of one kind or another. If JAXA is ready to abandon its own government rockets and buy the service from the private sector, those Japanese startups will start to prosper.

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Japan closes down its Akatsuki Venus orbiter mission

8:50 am

japan’s space agency JAXA today announced that it has shut down down operations on its Akatsuki orbiter, in orbit around Venus since 2015.

Communication with “Akatsuki” was lost during operations near the end of April 2024, triggered by an incident in a control mode of lower-precision attitude maintenance for a prolonged period. Although recovery operations were conducted to restore communication, there has been no luck so far. Considering the fact that the spacecraft has aged, well exceeding its designed lifetime, and was already in the late-stage operation phase, it has been decided to terminate operations.

Akatsuki has a interesting history. Launched in 2010, it failed to enter Venus orbit as planned in two attempts in 2010 and 2011 because of a failure in its main engine. Engineers then improvised and — after orbiting the Sun for several years — were able to get it into Venus orbit in 2015 using only its attitude thrusters. Its primary mission ended in 2018, but it continued to study Venus’ atmosphere since.

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Europe once again delays test flights of its Callisto 1st stage hopper

11:05 am

Callisto's basic design
Callisto’s basic design

First proposed in 2015 as Europe’s answer to SpaceX’s Falcon 9, the first test flights of the European Space Agency (ESA)’s Callisto grasshopper-type reusable test prototype, as shown on the right, has once again been delayed, now from 2026 to 2027.

On Friday, CNES published a call seeking a partner to provide mechanical operations and procedures support ahead of the Callisto flight-test campaign, including contributions to operations user manuals, drafting mechanical operation procedures, and conducting detailed studies of mechanical interfaces between the vehicle and the ground segment. In the preamble to the scope of work, the notice states that the campaign will be carried out from the Guiana Space Centre in French Guiana in 2027. It will include an integration phase followed by eight test flights and two demonstration flights, all to be completed over a period of eight months.

The project, in which Japan’s space agency JAXA is participating, had an initial budget of $100 million, and originally planned to do its first hops in 2020. Instead, ESA spent a dozen years making powerpoint presentations, while SpaceX flew hundreds of operational flights with its Falcon 9, for profit.

Worse, this program is not attached to any rocket. It is a dead end. ESA and JAXA might get some useful engineering data from it, but it will belong to no one, and it is unclear anyone will care. At this moment it appears several private companies in Europe will have flown their own new rockets before Callisto even gets off the ground, and the data from those real rocket launches will be much more useful to them down the road.

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Two Japanese shipping companies are developing floating landing platforms for rockets

9:25 am

Two different Japanese shipping companies are now developing floating ship platforms that rocket companies could use to land their rocket’s first stages.

Japan’s Nippon Yusen Kaisha (NYK) is following compatriot Mitsui OSK Lines in targeting space exploration as a new source of revenues.

NYK has obtained an approval in principle from ClassNK for the conceptual design of an offshore recovery system for reusable rockets, an initiative developed through the Space Strategy Fund at the Japan Aerospace Exploration Agency (JAXA). NYK now aims to carry out a demonstration test of this new vessel type in 2028 working with multiple partners including Mitsubishi Heavy Industries.

Since JAXA and Mitsubishi own and build Japan’s new H3 rocket, JAXA’s funding here suggests both are considering upgrading the H3 for reusability. It is also possible Mitsubishi is mulling plans to build its own new commercial rocket.

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JAXA/Mitsubishi test upgraded engines for H3 rocket

8:42 am

Japan’s space agency JAXA, working with Mitsubishi, successfully completed today a static fire test of new more powerful engines to be used on its new H3 rocket, thus eliminating the need for solid-fueled boosters with the goal of reducing the rocket’s cost.

Thursday’s test involved the sixth H3 rocket, which is a Type 30 test vehicle that has three main engines and no boosters. The three main engines were fired for 25 seconds while the rocket remained attached to the launchpad. JAXA will check acceleration, temperature and other data collected during the test.

This new version of the H3 is expected to do its first launch before the end of 2025. If successful, the launch price compared to JAXA’s now retired H2A rocket will be cut in half, to about $35 million, a number that will almost be competitive with the Falcon 9. SpaceX officially charges about $70 million per launch, but it is believed it could reduce that price significantly — some estimate to as low as $20 million — and still make a profit.

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Ispace: Resilience’s failure was due to a hardware issue in laser range finder

8:34 pm

In a press conference today, officials of the Japanese startup Ispace explained that the failure of its second lunar lander, Resilience, to land softly on the Moon on June 5, 2025 was due to a hardware issue in its laser range finder that prevented it from providing correct altitude data.

At the same time, they have not yet been able to pin down precisely what caused the failure. It could have been because of unexpected degradation during flight, or possibly a technical fault with the range finder in gathering data at the speeds and altitudes experienced.

The company is forming a task force in partnership with Japan’s space agency JAXA as well as NASA to try to figure out the issue. It is also going to add lidar instrumentation to future missions to provide a backup to the laser range finder. These actions will add about $11 million in additional costs, an amount Ispace says it can absorb.

Ispace is building two more lunar landers, one for NASA in partnership with the American company Draper, and the second for JAXA. It appears both missions are still moving forward.

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After a decade of development, ESA finally starts testing a part of its Callisto grasshopper

9:12 am

Callisto's basic design
Callisto’s basic design

My heart be still! First proposed in 2015 as Europe’s answer to SpaceX’s Falcon 9, the European Space Agency, in partnership with Japan, has finally begun acoustical testing of just one part of its Callisto grasshopper-type reusable test prototype, as shown on the right.

Callisto consists of five main sections: the Aft Bay, which includes the engine and landing legs, the LH2 Tank, the LOx Tank, the VEB, and the Fairing. The VEB houses much of the demonstrator’s electronics, including its onboard computer, avionics, and a reaction control system that uses H2O2 propellant. Its distinctive features include a pair of control fins.

In addition to confirming that the VEB had been transported to the CNES facilities in Toulouse, the 4 March Institute of Space Systems update also revealed that the acoustic test campaign for the key Callisto module had commenced last week. The acoustic test campaign simulates the intense sound vibrations the demonstrator will experience during flight to ensure structural integrity and component reliability.

The whole project has a budget of $100 million. The first test hop won’t occur until 2026, eleven years after the project began, and six years behind its original launch date. In that same time, SpaceX has completed several hundred commercial landings of its Falcon 9 first stage, reusing those stages up to two dozen times.

Nor is Callisto part of any program to develop a similar reusable rocket. It is a typical dead-end government project, with ESA having no clear goal to apply it commercially. The best Europe can hope for is that the engineering lessons from its tests will be given freely to the new European commercial rocket startups, so that they can use it someday.

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Japan’s H3 rocket successfully completes its fifth launch

9:40 am

Japan’s space agency JAXA early today successfully launched the sixth satellite in that country’s GPS-type constellation, its new H3 rocket lifting off from the Tanegashema spaceport in south Japan.

This was the rocket’s fifth launch, and the first for Japan this year. The link goes to the JAXA live stream, cued to T-30 seconds. Though it now also provides English translation, JAXA still insists on having an announcer count off every second, several minutes prior to and after launch, something that is incredibly annoying and distracting, and entirely unnecessary.

The 2025 launch race:

14 SpaceX
6 China
1 Blue Origin
1 India
1 Japan

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Japan’s government wants its private sector to do all its future space station work, not its space agency JAXA

9:05 am

In a major shift of power away from its government, the Japanese science and technology ministry is presently drafting a policy that would have that country’s private sector lead all work that Japan does on any of the future commercial private space stations being built, not its space agency JAXA as has been done now for decades.

The draft policy specifies how Japan will be involved with the next space station. According to the draft, “the private sector will have such responsibilities as managing [the new space station], and JAXA will support its use.”

JAXA is currently responsible to the management and maintenance of the ISS and serves as the point of contact for its commercial use. However, the government will select a Japanese private-sector company to be the point of contact for the next space station. When JAXA, research institutes or other companies plan to use the ISS, they will have to contact the next station’s point of contact.

While Japan wants to have one of its own modules on one of the commercial stations, as it presently has on ISS, it appears the government does not want JAXA to lead this project. Instead, it wants Japan’s private sector to run the show by working out its own deals with the private commercial stations. At present the Japanese company Mitsui is partnering with Axiom on its station, so this is likely the first station where a deal could be worked out.

It seems that Japan is trying to poke its private sector out of its doldrums. Right now that sector seems unable to take any action on its own. It sits and waits for guidance from the government before acting, and even then acts timidly, waiting to see if the government approves of each step. What the Japanese government now wants instead is some independent action, not linked to government policy.

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ESA releases three images taken by BepiColombo during its Mercury fly-by yesterday

10:57 am

BepiColombo image from January 8, 2025 fly-by of Mercury
Click for original image. For the annotated version
click here.

The European Space Agency (ESA) today released what it called the three best images taken by the ESA/JAXA joint mission BepiColombo to Mercury in its closest fly-by of the planet yesterday.

The image to the right, cropped, reduced, and sharpened to post here, shows the north polar regions of Mercury. The probe’s solar array is visible to the right.

Flying over the ‘terminator’ – the boundary between day and night – the spacecraft got a unique opportunity to peer directly down into the forever-shadowed craters at planet’s north pole.

The rims of craters Prokofiev, Kandinsky, Tolkien and Gordimer [the four craters in a line at the terminator] cast permanent shadows on their floors. This makes these unlit craters some of the coldest places in the Solar System, despite Mercury being the closest planet to the Sun!

Excitingly, there is existing evidence that these dark craters contain frozen water. Whether there is really water on Mercury is one of the key Mercury mysteries that BepiColombo will investigate once it is in orbit around the planet.

This was BepiColombo’s last slingshot maneuver. It is now set to enter Mercury orbit in late 2026, where it will split into two separate orbiters, one build by ESA and the other by Japan’s space agency JAXA.

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Japan identifies a Chinese hacker group as the source of 210 attacks since 2019

9:23 am

The Japanese government has now identified a Chinese hacker group — dubbed “MirrorFace” and likely working with government support and direction — as the source of 210 attacks from 2019 to 2024.

Investigations by the agency’s National Cyber Department and police nationwide found that the malware used by MirrorFace was similar to that employed by the “APT10 Group,” a hacker organization said to be associated with China’s Ministry of State Security.

The targets also aligned with China’s areas of interest and the attacks coincided with Chinese working hours, ceasing during the country’s long holidays, police noted.

Though Japan’s space agency JAXA was a major target, it appears the hackers had many successes with other government agencies, including those related to national security.

This story only adds weight to the previous reports [pdf] of Chinese hacks of JPL, whereby China got the plans of our Spirit and Opportunity Mars rovers and used that information to design Zhurong, its first rover to go to Mars.

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Japan’s space agency admits first launch of its new Epsilon-S rocket will be delayed

10:01 am

Japan’s space agency JAXA yesterday admitted that the first launch of its new Epsilon-S rocket — intended to be cheaper and competitive with the new rockets being developed worldwide — will be delayed because of the explosion that occurred during a static fire test on November 26, 2024.

The news reports in the Japanese press don’t provide much information. It appears the investigation into the explosion is still on-going, and that the cause of the failure has not yet been identified. Because of this, JAXA has been forced to cancel the planned March 2025 date for Epsilon-S’s inaugural flight.

JAXA should get out of the business of building rockets, as its track record is really horrible. The Japanese government has already told it to do so, but it is clearly dragging its feet, not wanting to give up the turf it has controlled for decades.

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Japan awards $32.5 million contract for lunar GPS-type satellite constellation to startup

9:52 am

Capitalism in space: As part of the multi-billion dollar fund the Japanese government has allocated to encourage private enterprise by new Japanese startups, its space agency JAXA has now awarded a $32.5 million development contract to the startup ArkEdge Space to design and fly a GPS-type satellite in orbit around the Moon, thus demonstrating the technology.

Under the agreement, ArkEdge Space will plan and design the mass production and operation of micro-satellite constellations to lead the development of a next-generation Lunar Navigation Satellite System (LNSS), a vital component to the International “LunaNet” initiative driven by National Aeronautics and Space Administration (NASA), European Space Agency (ESA) and JAXA. LunaNet seeks to establish essential infrastructure to support sustainable lunar exploration and foster the growth of the lunar economy.

The real significance of this contract award is that it signals JAXA’s growing shift from designing, building, and owning everything to simply becoming the customer who gets what it needs from the private sector. The Japanese government had established that fund for this express purpose, but JAXA has shown a reluctance to proceed, as it directly threatens its turf. This award indicates that reluctance is finally being pushed aside.

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Engine for Japan’s new Epsilon-S rocket explodes during static fire test

9:36 am

For the second time in a row an engine for Japan’s new Epsilon-S rocket has exploded during a static fire test.

The test was conducted inside of the restricted area at Japan’s Tanegashima Space Center in southwestern Japan, and the Japan Aerospace Exploration Agency is investigating, Chief Cabinet Secretary Yoshimasa Hayashi told reporters.

An Epsilon project manager, Takayuki Imoto, told an online press conference from Tanegashina that the explosion occurred 49 seconds into the planned two-minute test, causing fire and scattering broken parts of the engine and damaging the facility.

The Epsilon-S is being built by Japan’s space agency JAXA. It is intended to replace the solid-fueled Epsilon rocket that was initially conceived in 2013 to lower launch costs and provide JAXA with a rocket that could complete with the many new smallsat rocket startups worldwide. That rocket however only launched six times and never achieved its goals. JAXA had been targeting March for the first launch of Epsilon-S, but that is now unlikely, especially considering these two engine failures during tests.

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ESA and JAXA sign agreement to increase cooperation and accelerate development of Ramses mission to Apophis

10:18 am

The new colonial movement: The European Space Agency (ESA) and Japan’s own space agency JAXA on November 20, 2024 signed a new cooperative agreement to increase their joint work on several missions, the most important of which is the proposed Ramses mission to the potentially dangerous asteroid Apophis during its 2029 close fly-by of Earth.

Two agencies agreed to accelerate to study potential cooperation for ESA’s Rapid Apophis Mission for Space Safety (RAMSES) which aims to explore the asteroid Apophis that will pass close to our planet on 13 April 2029, including but not limited to provision of thermal infrared imager and solar array wings as well as possible launch opportunities.

The two countries are already working together on two different planetary missions, the BepiColombo mission to Mercury and the Hera mission to the asteroid Dymorphos. Both are on their way to their targets. This new agreement solidifies the commitment of both to make sure Ramses is funded, built, and launched in the relatively short time left before that 2029 Earth fly-by. At the moment the ESA has still not officially funded it fully.

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Japan launches military communications satellite

9:12 am

Japan today successfully launched a military communications satellite on the fourth launch of Mitsubishi’s new H3 rocket.

Liftoff occurred at Japan’s Tanegashima spaceport on the southern end of Japan’s island chain.

This was Japan’s fifth launch in 2024, the most launches it has accomplished in a single year since it completed six in 2018. As such the leader board in the 2024 launch race remains unchanged:

107 SpaceX
49 China
12 Russia
11 Rocket Lab

American private enterprise still leads the rest of the world combined in successful launches 124 to 74, while SpaceX by itself still leads the entire world, including American companies, 107 to 91.

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JAXA confirms first hop of Callisto delayed until ’26

9:32 am

Callisto's basic design
Callisto’s basic design

Japan’s space agency JAXA has now confirmed what France’s space agency CNES had revealed in August, that the first 100-meter-high hop of the government-proposed Callisto engineering Grasshopper-type test rocket will not take place any earlier than 2026.

This joint project of JAXA, CNES, and Germany’s space agency DLR was first proposed in 2015, and by 2018 was aiming for a 2020 launch. Four years past that target date and they are still not ready to launch. Remember too that even after it completes its test hop program an operational orbital rocket would have to be created. It does not appear this can easily be scaled up to fit Ariane-6.

SpaceX meanwhile conceived its Grasshopper vertical test prototype in 2011, began flying that year, and resulted in an actual Falcon 9 first stage landing in 2015. It has subsequently completed well over 300 actual commercial flights, reusing first stages up to 23 times.

The contrast between these government agencies and that private company is quite illustrative.

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Mitsuibishi’s H3 rocket wins launch contract from UAE

8:55 am

Capitalism in space: The United Arab Emirates (UAE) yesterday announced that it has awarded the launch contract for its first unmanned probe to the asteroid belt to the Japanese company Mitsuibishi and its new H3 rocket.

The UAE Space Agency (UAESA) announced Oct. 10 it selected Mitsubishi Heavy Industries to launch its Emirates Mission to the Asteroid Belt (EMA) on an H3 rocket in the first quarter of 2028. Terms of the contract were not disclosed.

The spacecraft, also known as MBR Explorer after Sheikh Mohammed bin Rashid Al Maktoum, Crown Prince of Dubai, will fly by six main belt asteroids between 2030 and 2033 before rendezvousing on a seventh, Justitia, in 2034, later deploying a lander.

This mission is the third that the UAE has selected MHI to launch. An H-2A rocket launched the Emirates Mars Mission, a Mars orbiter, in 2020, while KhalifaSat, a remote sensing satellite, launched as a secondary payload on another H-2A in 2018.

What makes this launch contract different from the previous two is that the winner is Mitsubishi. Previous awards went through Japan’s space agency JAXA, which appeared to manage the H2A entirely. Now, Mitsubishi is in control, and is working directly with its customer.

This change proves that Japan’s government effort to promote private enterprise in space is real, that though it has been slow to wrest bureaucratic control from JAXA, that wresting is happening nonetheless.

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More details revealed of computer hacking of Japan’s space agency last year

9:24 am

According to a news article yesterday, the hacking of the computer systems of Japan’s space agency JAXA last year was far more extensive than first revealed, involving multiple attacks that obtained a great deal of data from many third parties, both governmental and commercial, and included the takeover of the accounts of five of JAXA’s nine-member board.

In the first attack, hackers stole the personal data of about 5,000 employees of JAXA and its related companies—nearly everyone with personal data on the computer network at the time. A JAXA investigation found that hackers took over accounts of about 200 of those individuals, including many senior JAXA officials, and gained unauthorized access to information, the sources said. The 200 hijacked accounts included those of about five directors on the nine-member board at the time, including President Hiroshi Yamakawa, the sources said. Hackers apparently targeted the accounts of directors and other senior officials who are authorized to access information on JAXA’s negotiations with outside parties, the sources said.

…According to the in-house investigation, Microsoft Corp.’s cloud service Microsoft 365 was compromised in the June 2023 cyberattack. More than 10,000 files of information stored on Microsoft 365 could have been leaked, the sources said. Of those, more than 1,000 files were provided by outside parties, including more than 40 companies and organizations with which JAXA had concluded non-disclosure agreements. Thse 40-plus entities include NASA, the European Space Agency, Toyota Motor Corp., Mitsubishi Heavy Industries Ltd. and the Defense Agency.

The source of the attacks was not indicated, but based on past hacks both of JPL and JAXA, China is the prime suspect. That country has routinely worked to steal technology from others. We should therefore not be surprised if Chinese space designs continue to resemble western concepts, down to the smallest nails.

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A new map of the magnetosphere of Mercury

12:11 pm

Map of Mercury's magnetosphere
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Using data obtained during the June 2023 fly-by by the European-Japanese probe BepiColombo, scientists have now published a new detailed map of the magnetic field that surrounds Mercury.

That map is to the right. From the caption:

A textured sphere representing Mercury is shown with magnetic field lines compressed on the sunward side and streaming out into a tail on the nightside. The BepiColombo spacecraft’s trajectory is drawn passing through the magnetosphere from dawn to dusk, close to the planet’s surface. Various features in the magnetosphere are depicted and labelled with text. Following the order in which they were detected by the spacecraft, this includes the bow shock, magnetopause, low-latitude boundary layer, cold ion cloud, plasma sheet horn and ring current.

You can read the peer-reviewed paper here [pdf]. Note that this research does not include data obtained during BepiColumbo’s fourth fly-by of Mercury in September. Furthermore, the spacecraft will do two more fly-bys before arriving in orbit in 2026, where it will then separate into two separate orbiters in complementary orbits. Thus, this magnetic map of Mercury is merely a rough draft, and will be significantly refined by the end of the mission.

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ESA releases images taken by BepiColombo during Mercury fly-by

9:29 am

Mercury as seen by BepiColombo September 4, 2024
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The European Space Agency (ESA) yesterday released images taken by the BepiColombo probe as it completed its fourth fly-by of Mercury on its long journey to enter orbit around that planet.

The picture to the right, cropped, reduced, and sharpened to post here, was taken four minutes after the closest approach of about 103 miles.

Four minutes after closest approach, a large ‘peak ring basin’ came into BepiColombo’s view. These mysterious craters – created by powerful asteroid or comet impacts and measuring about 130–330 km across – are called peak rings basins after the inner ring of peaks on an otherwise flattish floor.

This large crater is Vivaldi, after the famous Italian composer Antonio Vivaldi (1678–1741). It measures 210 km across, and because BepiColombo saw it so close to the sunrise line, its landscape is beautifully emphasised by shadow. There is a visible gap in the ring of peaks, where more recent lava flows have entered and flooded the crater.

BepiColombo still has two more fly-bys of Mercury to do before entering orbit in November 2026. At that time the spacecraft’s two orbiters, one from Europe and the other from Japan, will separate and take up complementary orbits.

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Due to thruster problem, the Mercury orbiter BepiColombo will arrive at Mercury almost one year late

9:05 am

The joint ESA and JAXA Mercury mission BepiColombo will now reach its destination eleven months late because its ion electric thrusters are producing less thrust than expected.

The spacecraft is actually made up of two orbiters, one built by the European Space Agency (ESA) and the second built by Japan’s space agency JAXA. During launch and the journey to Mercury each is attached to a third spacecraft called the Mercury Transfer Module (MTM), which has the large electric ion thrusters used for making the mid-course corrections prior to and after each fly-by of the Earth (once), Venus (twice), and Mercury (six) before finally entering orbit around Mercury. It has already completed the Earth, Venus and three Mercury fly-bys.

In April 2024 engineers discovered that during a mid-course correction on April 26st the MTM’s thrusters failed to produce the desired thrust.

Engineers identified unexpected electric currents between MTM’s solar array and the unit responsible for extracting power and distributing it to the rest of the spacecraft. Onboard data imply that this is resulting in less power available for electric propulsion. ESA’s BepiColombo Mission Manager, Santa Martinez explains: “Following months of investigations, we have concluded that MTM’s electric thrusters will remain operating below the minimum thrust required for an insertion into orbit around Mercury in December 2025.”

In order not to lose the mission entirely, the science team has come up with a new trajectory that will have it fly past Mercury on its fourth fly-by on September 4, 2024 only 103 miles above the surface, 22 miles closer than originally planned. This will give it a larger slingshot speed boost to help make up for the under-powered thrusters. It will then make its planned fifth and sixth Mercury fly-bys in December ’24 and January ’25, the adjusted route having it arrive in Mercury orbit eleven months later than planned, in November 2026.

This new plan however means that the pictures taken this week during the Mercury fly-by will provide some nice high resolution details, far better than those produced by the earlier fly-bys.

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JAXA finally shuts down SLIM operations after four months of no contact

9:14 am

SLIM's last image
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Japan’s space agency JAXA today announced that it has now closed down all further attempts to contact its SLIM lunar lander on the surface of the Moon.

The Japan Aerospace Exploration Agency (JAXA) concluded operations of the Smart Lander for Investigating Moon (SLIM) on the lunar surface at 22:40 (JST), on August 23, after being unable to establish communication with the spacecraft during the operational periods from May to July*, following the last contact on April 28, 2024.

SLIM was launched onboard the H-IIA Launch Vehicle No.47 (H-IIA F47) on September 7, 2023 from the Tanegashima Space Center and achieved Japan’s first Moon soft landing on January 20, 2024. The landing precision was evaluated with a position error of approximately 10 meters from the target point, confirming the world’s first successful pinpoint landing. In addition, the Multi-Band Camera (MBC) successfully performed spectral observations in 10 wavelength bands on 10 rocks, exceeding initial expectations. Further, despite not being part of the original mission plan, the spacecraft was confirmed to survive three lunar nights and remained operational, demonstrating results that surpassed initial goals.

The lander’s main goal was to demonstrate the ability to do a precise robotic landing within a 100 meter landing zone. And even though one nozzle fell off during landing, resulting in SLIM landing on its side, it accomplished that goal and then survived three lunar nights, exceeding significantly its expected ability to function in harsh lunar environment.

The image to the right, reduced to post here, was taken by SLIM just before it was shut down for its first lunar night. It looks to the southeast across the width of 885-foot-wide Shioli Crater, the opposite rim the bright ridge in the upper right about a thousand feet away.

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