Tag: engineering

China launches unmanned Shenzhou-22 capsule to its Tiangong-3 station

9:23 pm

China tonight (November 25, 2025 Chinese local time) successfully launched an unmanned Shenzhou-22 capsule to its Tiangong-3 station, its Long March 2F rocket lifting off from its Jiuquan spaceport in northwest China.

China moved very fast to get this rocket and capsule integrated and stacked and ready to launch, less than three weeks. This speed was essential because the three-person crew on Tiangong-3 had no usable lifeboat capsule which they could use should something go wrong and they needed to evacuate. Their capsule, Shenzhou-21, had been used by the previous crew to get back to Earth because that crew’s capsule, Shenzhou-20, had been damaged by “space debris,” according to China’s state-run press.

The capsule is scheduled to dock with Tiangong-3 later in the day, about six hours after launch.

No word by China’s press where the rocket’s lower stages crashed inside China.

The leaders in the 2025 launch race:

154 SpaceX
73 China (a new record)
15 Rocket Lab
13 Russia

SpaceX still leads the rest of the world in successful launches, 154 to 121.

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NASA trims $768 million from Boeing’s Starliner contract

9:08 pm

Starliner docked to ISS
Starliner docked to ISS in 2024.

According to one story late today, the modifications NASA announced today on its Starliner contract with Boeing will trim $768 million from the total contract, assuming the two later optional manned missions never fly.

Originally valued at $4.5 billion, Boeing’s contract under the Commercial Crew Program envisioned six operational astronaut flights. NASA’s latest modification cuts that number to four, including up to three crewed missions and an uncrewed cargo flight set for April 2026. Two additional flights remain optional. With the changes, the contract’s value has dropped by $768 million to $3.732 billion; NASA has already paid $2.2 billion to date.

Boeing can still earn that additional money if if somehow manages to convince NASA to do all six flights. It will have great difficult achieving this, however, since there probably won’t be enough time to get all six flights up before ISS is retired. That fact is partly why NASA has made this change.

This report however suggests that NASA is not paying Boeing extra money for the unmanned cargo mission in April 2026. Instead, it is treating it as if it were the first operational manned Starliner flight, paying Boeing its purchase price as if it had achieved all its milestones during the manned demo flight last year.

It really pays in today’s America to be a big giant corporation that does lots of business with our bloated and very corrupt federal government. That government is then quite willing to bend over backwards to help you, even if you are like Boeing and incompetent (Starliner), corrupt (737-MAX), or routinely go over-budget and fail to deliver on time (Air Force One). That certainly appears to be the case here with Boeing.

Hat tip BtB’s stringer Jay.

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Blue Origin’s Blue Ring orbital tug gets a customer

3:40 pm

Blue Origin today announced that the orbital situational awareness company Optimum Technologies (OpTech) has purchased payload space on the first flight of its Blue Ring orbital tug.

Blue Ring’s first mission is expected to launch in 2026 with initial injection into Geostationary Transfer Orbit (GTO) and additional services performed in Geostationary Orbit (GEO). The Blue Ring vehicle will demonstrate its ability to simultaneously support the GEO tracking and custody mission as well as space object characterization, leveraging dynamic maneuverability to support high-resolution characterization.

OpTech’s Caracal sensor is designed to provide actionable insights on resident space objects and orbital activity and includes onboard image storage, object detection algorithms, and passive thermal control. The payload is designed to operate flexibly across dynamic orbits over a year-long mission profile. Caracal will fly with Scout Space’s Owl sensor, along with internally developed payloads, all demonstrating Blue Ring as the ideal platform for supporting future GEO space domain awareness missions.

This instrument is designed to inspect what else is in orbit. It could be that the mission will have Blue Ring fly close to other satellites, both foreign and domestic, so that Caracal can gather imagery and data. Such capabilities are things both the Chinese and Russians have tested repeatedly and the Pentagon needs as well.

This announcement once again indicates that under CEO David Limp, Blue Origin is finally beginning to actually do things.

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NASA downgrades Boeing’s Starliner contract

12:36 pm

Starliner docked to ISS
Starliner docked to ISS in 2024.

NASA today announced a major revision to its contract for Boeing’s manned Starliner capsule, changes that will require it to fly one more unmanned cargo mission to ISS before putting people on it again, while also reducing the total number of later purchased manned flights.

As part of the modification, the definitive order has been adjusted to four missions, with the remaining two available as options. The next Starliner flight, known as Starliner-1, will be used by NASA to deliver necessary cargo to the orbital laboratory and allow in-flight validation of the system upgrades implemented following the Crew Flight Test mission last year.

NASA and Boeing are targeting no earlier than April 2026 to fly the uncrewed Starliner-1 pending completion of rigorous test, certification, and mission readiness activities. Following Starliner certification, and a successful Starliner-1 mission, Starliner will fly up to three crew rotations to the International Space Station.

It has been rumored for months that NASA would require Boeing to fly another unmanned mission before certifying Starliner for manned flights. The question that this press release does not answer is whether NASA is paying for this unmanned flight. The original contract was fixed price, and required Boeing to meet certain milestones before further payments. Another cargo flight to ISS was not in that original deal.

I therefore suspect this is NASA’s way to get Starliner certified. Boeing has likely refused to pay for another demo flight, threatening instead in negotiations to cancel the project entirely. NASA however needs to get cargo to ISS. By buying a cargo mission from Boeing (possibly instead of Northrop Grumman’s Cygnus capsule, which is presently hindered because it lacks its Antares launch vehicle), NASA gets that cargo while also saving Starliner.

The bottom line remains fundamental: Will Boeing finally be able to do a successful problem-free Starliner flight in April 2026? We shall have to see. The fact that NASA appears to be reducing the total number of eventual Starliner missions to ISS indicates its own lack of confidence.

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Two Middle Eastern startups sign deal to build a mini-shuttle dubbed Oryx

9:15 am

LEAP71's aerospike test engine
Leap71’s smallscale aerospike engine during testing.
Click for original image.

A rocket startup in the UAE, Aspire, has signed a partnership deal with a rocket engine startup in Dubai, Leap71, to build a fully reusable mini-shuttle dubbed Oryx, not unlike the Dream Chaser mini-shuttle that Sierra Space has been trying to launch now for more than a decade.

As part of the plan, Leap71 will develop two types of engines for Oryx, including one using an aerospike nozzle.

Building on their ongoing cooperation, Aspire Space is now contracting LEAP 71 to develop the rocket engines powering the Oryx’s second stage. Each engine will produce 20 tons (200 kN) of thrust, and the partners are pursuing two parallel propulsion paths: a conventional engine and a novel aerospike configuration.

The aerospike concept, long studied but never flown, offers superior efficiency across both atmospheric and vacuum flight regimes — making it particularly well suited for reusable launch systems. LEAP 71 gained international recognition in December 2024 for successfully testing a 5 kN aerospike engine, validating key aspects of its design.

The picture to the right shows the LEAP aerospike engine during those 2024 tests. As I noted then, “The spike in the center acts as one wall of the nozzle, and the changing pressure of the atmosphere acting as the other side of the nozzle, allowing the nozzle size to change as the rocket rises, thus making its thrust as efficient as possible.”

Those tests were done in the United Kingdom, suggesting the company relied on British engineers using financing from Dubai. Even so, to go from that smallscale test to a full engine launching both a rocket and a reusable mini-shuttle will be a major challenge. Or to put it another way, to say their plans are aspirational is an understatement.

Hat tip BtB’s stringer Jay.

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A company that wants to shoot payloads into orbit with a cannon

9:23 am

Link here. The company is called Longshot. It isn’t the only company attempting to do this. I reported on another company, Green Launch, in 2022, but have heard little from it since then.

I leave it to the engineers in my readership to tell me if this company has any chance of success. It seems to me that any payloads it launches would likely have to be dead weight, like water or oxygen or fuel, as the speeds involve would damage delicate instrumentation.

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SpaceX launches 28 Starlink satellites; 1st stage flies for first time

9:14 am

UPDATE: When I wrote this post, several sources stated that the first stage was flying for its thirtieth time. I relied on those sources. As it turns out, they were wrong. The first stage on this launch was flying for its first time. The post below has been rewritten to correct this error.

———————–
SpaceX early this morning successfully placed another 28 Starlink satellites into orbit, its Falcon 9 rocket lifting off from Vandenberg Space Force Base in California.

The first stage completed its first flight, landing on a drone ship in the Pacific.

The leaders in the 2025 launch race:

154 SpaceX (a new record)
72 China
15 Rocket Lab
13 Russia

SpaceX now leads the rest of the world in successful launches, 154 to 120.

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Startup B2Space launches rocket from balloon

10:21 am

The startup B2Space has completed a test flight using a balloon to lift a solid-fueled rocket to high altitude, where the rocket was then launched.

In a 17 November update, the company announced that it had completed a test of its integrated rockoon launch system using a “rocket of lower power than that planned for the commercial version of the system.” The test was conducted from the Port of Vueltas in Valle Gran Rey in the Canary Islands. Its aim was to validate key elements of the company’s rockoon launch system, including the rocket rail alignment and ignition subsystems.

The balloon was launched at 4:00 CET and carried the small rocket to an altitude of 21.5 kilometres, at which point the rocket was launched. Speaking to European Spaceflight, B2Space CTO Valentin confirmed that the ignition system had been successful but did not share any details about the state of the rocket itself. In a 17 November update, the company confirmed that all elements of the launch system had been successfully recovered following the test.

Calling this company a startup is not quite accurate, as it has been around for almost a decade, pushing the idea of a a balloon-launched rocket, dubbed a “rockoon”. The idea itself is not new. If my memory serves me right, it had been tested intermittently in some form as early as the 1950s.

The company hopes to test a larger suborbital version in 2026, followed by an orbital test.

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What might be the weirdest crater on Mars

12:44 pm

What might be Mars' weirdest crater
Click for original.

Cool image time! The picture to the right is taken from a global mosaic created from images taken by the wide-view context camera on Mars Reconnaissance Orbiter (MRO). The original source image was probably a photograph taken on February 15, 2020.

I normally begin with an image from MRO’s high resolution camera, but the only images that camera took of this crater did not show it entirely. This context camera shows it in all its glory, what to my eye appears to be one of the weirdest craters I’ve seen on Mars.

First, note its oblong shape — 5.5 miles long and 3.7 miles wide — which appears to narrow to the southeast. It certainly appears that if this crater was caused by an impact, the bolide came in at a very low angle from the northwest, plowing this 700-foot-deep divot as it drove itself into the ground. Research has shown that an impact has to come in almost sideways to do this. Even at slightly higher angles the resulting craters will still appear round.

But wait, there’s more!
» Read more

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Superheavy intended for next test flight damaged during static fire test

9:57 am

Damaged Superheavy
Click for source.

According to video taken by the Labpadre live stream of SpaceX’s operations at Boca Chica, the Superheavy booster that the company was preparing for the next orbital test flight was damaged while it was being fueled for a static fire test.

The video, which I have embedded below, suggests a tank rupture occurred in the booster’s lower section, where its main oxygen tanks are located. Another post-incident image from different source on social media and to the right, shows the hull of that section badly deformed, with the far side not visible apparently blown out. It also appears the test stand experienced no or little damage.

This incident will likely delay the next orbital Starship/Superheavy test flight, but not significantly. SpaceX has more prototype Superheavys in the queue. While it might need to do some quick additional work preparing one, that should’t slow things down by much.

Figuring out what happened to cause this burst tank is more likely to cause a delay. The company needs to identify and fix the issue before it can proceed.
» Read more

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China launches a “communications technology test satellite”

9:33 am

China today successfully launched what its state-run press called a “communications technology test satellite,” its Long March 3B rocket lifting off from its Xichang spaceport in southwest China.

No other details about the satellite were released. Nor did that state-run press provide any information about where the rocket’s lower stages, using very toxic hypergolic fuels, crashed inside China.

The leaders in the 2025 launch race:

152 SpaceX
72 China (a new record)
15 Rocket Lab
13 Russia

SpaceX still leads the rest of the world in successful launches, 152 to 120.

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Moss placed on the outside of ISS for nine months was still capable of reproducing

9:27 am

Graphic from research paper
Graphic from paper.

Scientists have now demonstrated that moss, a bryophyte, can still reproduce despite spending nine months exposed to the harsh vacuum and radiation environment of space on the outside of ISS.

In fact, the researchers found that more than 80% of the spores survived and were able to germinate. You can read their peer-reviewed paper here [pdf].

That the moss could survive is in itself not as surprising as you might think. When the Apollo 12 astronauts brought back pieces from the unmanned Surveyor-3 lander scientists found a single bacterium that survived in space for more than two years. What makes this new result more significant is that moss isn’t simply bacteria, but plant life far more complex. More important, the results found that the moss was far more tolerant of that harsh environment than other lifeforms. From the paper:

In contrast, desiccation-tolerant animals such as tardigrades (Hypsibius dujardini and Ramazzottius varieornatus) and UV-resistant insects’ hydrated larvae undergoing anhydrobiosis (Polypedilum vanderplanki) failed to match the UVC tolerance observed in P. patens spores. Similarly, spores of bacteria and fungi, such as Bacillus subtilis and Aspergillus niger, showed only limited UVC resistance. Thus, these patterns highlight that certain plant structures, namely spores and seeds, tend to exhibit superior UV resistance, likely due to the presence of specialized UV-screening pigments such as flavonoids and carotenoids, which help protect DNA and cellular structures from UV-induced damage.

As the paper notes in its conclusion:

As pioneer plants, bryophytes have the potential to transform regolith into fertile soil, facilitating ecosystem development on other planets, similar to peat moss improving soil fertility on Earth.

That moss isn’t bother significantly by radiation means any greenhouse on Mars need not be shielded as aggressively as previously thought, at least in the initial stages.

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Maritime Launch Services touts a second non-orbital launch from Spaceport Nova Scotia

8:51 am

Proposed Canadian spaceports
Proposed Canadian spaceports

The competition between Canada’s two proposed spaceports heated up yesterday when the owner of Spaceport Nova Scotia, Maritime Launch Services, announced that the second launch had taken place there, this time by a rocket startup named T-Minus Engineering.

The launch took place at 11:54 AM, and the mission marked an important milestone in advancing the operational readiness of Spaceport Nova Scotia, critical infrastructure that will provide Canada with sovereign launch capability. The launch was conducted from Spaceport Nova Scotia under approved regulatory and safety frameworks. The demonstration strengthened coordination among launch site teams and stakeholder partners, while refining launch operational procedures and the safety and security systems that govern all activities at the spaceport.

The press release provided no details about the launch itself, though this report noted that the rocket failed to reach its goal of 100 kilometers, the altitude considered by most as the edge of space. The rocket, dubbed Barracuda, is solid-fueled and was apparently designed by T-Minus to demonstrate its capability for hypersonic testing.

This was the second suborbital launch from this spaceport. The first, in 2023, was a student test flight. In both cases, the launches were mostly a PR effort to sell the spaceport, which was first proposed in 2016 but has been unable so far to draw any launch customers. Maritime now also faces competition from the Atlantic Spaceport being proposed by a different company, Nordspace.

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Firefly to provide the launch rocket for Kratos’ hypersonic test vehicles

8:36 am

The rocket/lunar lander startup Firefly yesterday announced that it has signed a partnership deal with the hypersonic test startup Kratos.

In August Kratos partnered with the Australian company Hypersonix to build 20 scramjet test vehicles for the Pentagon for hypersonic test flights. Firefly with this new deal will provide the launch vehicle for getting those scramjets into the air at the speeds required. In fact, it appears Firefly is now going to do with its Alpha rocket the same thing that Rocket Lab did with its Electron rocket, revising it for suborbital testing.

Rocket Lab has already completed six successful HASTE launches. It will be interesting how quickly Firefly can get Alpha reconfigured and launched in this manner. Some of that schedule will also hinge on Kratos’ ability to provide the scramjets. The press release makes no mention of schedule.

Firefly’s action here continues the recent shift by many American space startups from rocketry and space exploration to defense work that is only tangentially related to space. It appears they are all diversifying to grab the expected rich contracts the Pentagon is expected to hand out to develop Trump’s proposed Golden Dome defense system. It also appears that many are diversifying because they have doubts the civilian space industry can sustain them, by itself.

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Spanish rocket startup PLD unveils the first qualification unit of its Miura-5 rocket

8:01 am

1st Miura-5 qualification unit
The 1st Miura-5 qualification unit. Click for original.

The Spanish rocket startup PLD yesterday unveiled the first of two full-scale qualification units it is building to test the design of its Miura-5 orbital rocket, scheduled for a first launch sometime in 2026.

The QM1 unit will serve to qualify two key elements of the launcher. Firstly, the MIURA 5 second stage will undergo a destruction test in the United States to validate the functioning of the Flight Termination System. This test will verify the operation of the explosive charges onboard the vehicle, designed to destroy the launcher in the event of an in-flight anomaly.

Secondly, a Wet Dress Rehearsal will be carried out on the rocket’s first stage – a full propellant loading test that replicates all structural load scenarios during the fuelling and pressurisation phase. This test is essential to validate the behaviour of structures under real operational conditions.

By December (next month) the company hopes to complete a second qualification unit for further testing, followed by the flight rocket, which will be shipped to French Guiana for a launch sometime next year.

Right now PLD and Germany’s Isar Aerospace are in the lead in the race to become the first European rocket startup to reach orbit. Isar — which in March attempted one launch that failed — has already shipped the stages to Norway for its second attempt before the end of this year. PLD thus appears to be just behind, though all this could easily change. This is rocket science y’know.

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SpaceX launches 29 more Starlink satellites

8:48 pm

The beat never stops! SpaceX tonight successfully placed another 29 Starlink satellites into orbit, its Falcon 9 rocket lifting off from the Kennedy Space Center in Florida.

The first stage completed its 23rd flight, landing on a drone ship in the Atlantic.

The leaders in the 2025 launch race:

152 SpaceX (a new record)
71 China
15 Rocket Lab
13 Russia

SpaceX now leads the rest of the world in successful launches, 152 to 119.

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Cracks on Mars

2:47 pm

A cracking Martian surface

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on September 20, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The camera team describes these features as “ridges,” which in one sense is entirely true. The features are ridges that rise above the surrounding plain. The problem is that they are also cracks, with most showing a distinct central fissure in their middle.

Such double ridged cracks are reminiscent of the surface of dried mud or paint, when it begins to crack and shrink. The surface on each side of a crack pulls away, rising upward slightly as it does so. Is that what we are seeing here, the drying of this surface?

As always, location is critical to understanding the Martian geology.
» Read more

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Blue Origin announces plans to upgrade New Glenn to match SLS

12:25 pm

New Glenn compared to the Saturn-5
Graphic issued by Blue Origin’s CEO comparing
New Glenn to the Saturn-5. Click for source.

In an update posted today, Blue Origin announced that it is planning to begin upgrades to its New Glenn orbital rocket as soon as its very next launch early in 2026, with those upgrades eventually raising the rocket’s capabilities to that of NASA’s overpriced, cumbersome, and poorly designed SLS rocket.

One of the primary enhancements includes higher-performing engines on both stages. Total thrust for the seven BE-4 booster engines is increasing from 3.9 million lbf (17,219 kN) to 4.5 million lbf (19,928 kN). BE-4 has already demonstrated 625,000 lbf on the test stand at current propellant conditions and will achieve 640,000 lbf later this year, with propellant subcooling increasing the current thrust capability from the existing 550,000 lbf.

The total thrust of the two BE-3Us powering New Glenn’s upper stage is increasing from the original design of 320,000 lbf (1,423 kN) to 400,000 lbf (1,779 kN) thrust over the next few missions. BE-3U has already demonstrated 211,658 lbf on the test stand.

These numbers are a little more than half that put out by the Saturn-5 in the 1960s. New Glenn however has a reusable first stage, so it will cost far less to launch, and will be able to do so frequently. These changes will also make it comparable to SpaceX’s Falcon Heavy.

These engine upgrades however are only a start. Blue Origin also plans to offer a second more powerful version of New Glenn by adding two BE-4 engines to the first stage and two BE-3U engines to the upper stage.
» Read more

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Rocket Lab sets new annual launch record for the company

11:00 am

Rocket Lab today set new annual launch record for the company, quickly scheduling and launching a payload for a “confidential commercial customer”, its Electron rocket lifting off from one of the company’s two launchpads in New Zealand.

This was the 15th orbital launch by Rocket Lab in 2025, beating the record of 14 the company set in 2025. Rocket Lab has also launched its HASTE suborbital version of Electron three times, so the company has actually completed the equivalent of 18 Electron launches this year, though three were not intended to reach orbit.

What made this launch unusual is that it was not announced in advance, and took place suddenly without revealing the customer. It is likely the customer was flying a classified military payload.

The leaders in the 2025 launch race:

151 SpaceX
71 China
15 Rocket Lab (a new record)
13 Russia

SpaceX still leads the rest of the world in successful launches, 151 to 119.

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ArianeGroup confirms it is targeting about six Ariane-6 launches in 2026

10:46 am

According to an official with ArianeGroup, the company that builds and owns the Ariane-6 rocket, it hopes in 2026 to double the launch rate from 2025, from four this year to as many as eight launches next.

The Group is ramping up production at its sites in France and Germany for this purpose. The main stage will be manufactured in Les Mureaux, France, and the upper stage in Bremen, Germany. The latter is considered the heart and brain of the rocket, as it is responsible for controlling the final flight section and reaching the target.

In Bremen, the Group developed a serial production process – similar to assembly line production in car manufacturing. Six upper stages are to be produced in parallel at the plant in future. Ten to twelve upper stages are to be completed and delivered each year. “The target of around ten missions per year should be achieved by 2027,” said Franzeck.

Franzeck’s prediction matches that made two weeks ago by the head of Arianespace, which manages Ariane-6 for ArianeGroup.

It is likely that these companies will get at least six launches off in 2026. Whether they can achieve eight is less likely, based on their past recent record. Reaching 10 launches in 2027 is probably more certain however. They have a big 18-launch contract with Amazon to launch its Amazon LEO satellites (formerly Kuiper), and there is great pressure to achieve those launches quickly because of Amazon’s FCC license requirements.

After this however the future of Ariane-6 remains uncertain. It is too expense (being expendable) to compete in the present launch market. Few European companies want to buy it, and there are numerous new reusable rockets about to begin operations.

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Webb captures spiraling shells around massive binary star system

10:31 am

Webb's false color image of shells
Click for original.

Using the Webb Space Telescope, astronomers have been able to produce a reasonably detailed map of the four shells that surround a triple-star system of two massive Wolf-Rayet (W-R) stars and an as-yet unseen supergiant, produced by the interaction of the winds that come off the two W-R stars combined with the interaction of the third.

The image to the right is that Webb false-color infrared image, combined with the data from the ground-based Very Large Telescope in Chile. It has been reduced to post here. The researchers have also produced a 3D simulation mapping out those shells, which you can view here.

The scientists have dubbed this system Apep after the Egyptian god of chaos. From the conclusion of the research paper [pdf]:

We imaged the colliding-wind W-R binary Apep with [Webb] and [the Very Large Telescope]. The JWST images detected four concentric dust shells with highly regular and detailed structures surrounding Apep. The mean expansion speed of the dust shells is 90 ± 4 mas yr−1 and the mean spacing between neighboring shells is 17.30″ ± 0.17″ [in degree seconds]. The shell spacing and expansion speed together suggest an orbital period of 193 ± 11 years, which is independent of uncertainties on the distance, and that the dust structure observed was produced over the past 700 years.

It is believed that Wolf-Rayet stars are primary candidates to eventually go supernova. The data for this system also suggests this system could produce a gamma ray burst as well. At present the astronomers estimate the distance to this system to be about 15,000 light years, which means such an explosion would likely poses no risk to us. It would however give scientists a great view of the event, better by many magnitudes compared to previous such explosions.

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India tests new and better restart method for upper stage of its biggest rocket

9:58 am

India’s space agency ISRO has successfully tested new restart method for the engine it uses on the upper stage of its LVM rocket, its biggest rocket that it also intends to use for its manned and interplanetary missions.

For future missions, multiple in-flight restarts of the CE20 engine will be required for mission flexibility towards multi-orbit missions. However, with the present configuration, each restart demands an additional start-up gas bottle and associated systems, leading to a reduction in vehicle payload capability. Hence, achieving boot-strap mode start – where the engine builds up to steady operation without external start-up assistance – is essential.

In this regard, a boot-strap mode start test on the CE20 Cryogenic engine was successfully conducted under vacuum conditions in the High-Altitude Test (HAT) facility at ISRO Propulsion Complex, Mahendragiri on 7th November 2025, for a duration of 10 seconds. A multi-element igniter was employed in both the thrust chamber and gas generator to facilitate boot-strap starting. In this test, following the ignition of the thrust chamber, the gas generator was ignited under tank head conditions, and the turbopumps were started without the use of the start-up system. Subsequently, boot-strap mode build-up and steady-state operation of the engine were successfully demonstrated.

In other words, the engine now be restarted numerous times, giving any payload attached much greater flexibility in positioning and orbital maneuvers. For manned missions this means it can be used to reposition the modules for India’s planned space station, maneuver its manned capsule Gaganyaan, and send interplanetary missions to the Moon and beyond.

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NASA releases numerous images of interstellar Comet 3I/Atlas

9:50 am

Comet 3I/Atlas as seen by Mars Reconnaissance Orbiter

NASA yesterday released a slew of images of interstellar Comet 3I/Atlas, taken by numerous in-space probes at Mars and elsewhere.

The picture to the right, cropped to post here, is probably the one with the most detail, taken by Mars Reconnaissance Orbiter (MRO) from Mars orbit on October 2, 2025. In addition, images were captured by:

None of these pictures show the comet in any great detail. All however confirm once again that it is a comet, not an interstellar alien spacecraft as some idiots in academia have been proposing wildly. The Maven observations in ultra-violet wavelengths for example identified hydrogen and other isotopes coming off the comet as it is heated by the Sun. MRO’s image to the right once again showed the comet’s coma and tail.

Above all, these observations were great engineering experiments for all the science teams, demonstrating that they could point their instruments in an unplanned direction and capture a very faint object quite far away.

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Katalyst picks Northrop Grumman’s Pegasus rocket to launch its Swift rescue mission

9:28 am

Katalyst's proposed Swift rescue mission
Katalyst’s proposed Swift rescue mission.
Click for original image.

The orbital repair startup Katalyst yesterday announced it has chosen Northrop Grumman’s air-launched Pegasus rocket to launch its mission to rescue NASA Gehrels-Swift space telescope.

Unlike typical launch campaigns that take up to 24 months, Katalyst has under eight months to get its LINK spacecraft on orbit to rescue Swift. Swift’s orbital decay demands an urgent mission, launching before atmospheric drag makes recovery impossible. Pegasus is the only system that can meet the orbit, timeline, and budget simultaneously.

Swift’s orbit at 20.6° inclination is difficult to reach from U.S. launch sites, where most small rockets are limited by launch site to inclinations above ~27°. Pegasus, carried aloft by Northrop Grumman’s L-1011 Stargazer aircraft and released midair at 39,000 feet, offers the flexibility to launch from virtually anywhere on Earth, making it one of the few viable systems capable of achieving Swift’s orbit on a highly compressed timeline.

This plan has numerous unusual aspects. First, the decision by NASA in September 2025 to pick Katalyst was a surprise. The company is new, and has never actually flown a repair mission yet. It got the contract basically because it could quickly reshape its first planned demo mission into a Swift repair mission.

Second, Pegasus was originally created in the 1980s as a low-cost rocket by the company Orbital Sciences (now part of Northrop Grumman). Though it initially undercut the prices of the existing rocket companies, in the long run it failed to offer a viable option. It hasn’t launched in almost five years, and has only been used five times in the past sixteen years. Northrop Grumman stopped making it years ago, and presently only has this one last rocket in its warehouse.

Finally, saving Gehrels-Swift is critical. It has been one of NASA’s most successful relatively low-cost space telescopes, designed to quickly target high energetic events like gamma ray bursts in order to capture the optical component of the blast. Its orbit is fast decaying and if not raised it will burn up in the atmosphere by 2029. To save it however requires a unique and improvised solution as it has no grapple attachment. Katalyst’s rescue spacecraft ““will rely on a custom-built robotic capture mechanism that will attach to a feature on the satellite’s main structure–without damaging sensitive instruments.”

To put it mildly, in many ways this might be one of the most daring NASA missions ever flown.

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Looking for avalanches on Mars

11:59 am

Avalanche scarp on Mars

Cool image time! The picture to the right, rotated, cropped, reduced, and enhanced to post here, was taken on September 24, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The science team labels this as an “avalanche scarp”. At first glance it appears we are looking at a major mass wasting event flowing downward to cover the lighter banded terrain near the bottom of the picture.

The problem is that the overlying material didn’t move as an avalanche down onto that lighter material. Note that it has within it its own layers. To have flowed over that lower terrain it would have had to do that coherently, its many layers moving in unison. This doesn’t seem probable, though who knows considering the alien nature of Mars.

So what is going on? And why was this picture taken?
» Read more

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Cracking scallops in the Mars

12:32 pm

Cracking scallops on Mars
Click for original image.

Cool image time! The picture to the right, cropped to post here, was taken on September 27, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The science team labels this “scallop-hosting mantle”. In other words, the surface here has a mantle of material that is for a variety of reason cracking and producing these north-facing scallops. That mantle also appears layered, since it descends downward in terraced steps as you travel north. This particular terrace drops about 40 feet.

Scientists believe [pdf] these scallops are formed in connection with the sublimation of underground ice.

According to [one hypothesis] scallop formation should be ongoing at the present time. Sublimation of interstitial ice could induce a collapse of material, initially as a small pit, then growing southward because of greater solar heating on the southern side. Nearby scallops would coalesce together as can be seen to have occurred.

In the case of the image to the right, this sublimation is also accompanied by a drying process similar to cracks one sees in dried mud. As the ice sublimates away the remain material shrinks and cracks.
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German rocket startup Isar wins another launch contract

9:43 am

Isar's first launch attempt fails
Spectrum falling seconds after its launch
in March 2025

The German rocket startup Isar Aerospace today won a new launch contract from the satellite aggregator SEOPS for a 2028 launch of its new Spectrum rocket.

SEOPS today announced during SpaceTech Expo it has purchased a dedicated launch on Isar Aerospace’s ‘Spectrum’ rocket. Targeted for launch in 2028, this marks SEOPS’ first collaboration with Isar Aerospace, expanding the company’s European launch capabilities.

SEOPS acts as an agent for satellite companies building small cubesats, arranging the launches for them because these companies often don’t have the resources or experience to do the job themselves. The choice of Isar’s Spectrum rocket suggests SEOPS wants to encourage new launch options, since Isar has only launched Spectrum once, and that launch was a failure. This contract acts to strengthen Isar’s future by giving it a powerful customer. It also gives SEOPS a European launch option, something that will attract European smallsat makers to it.

Isar is presently preparing Spectrum for its second launch out of Norway’s Andoya spaceport, with road closure announcements suggesting it will occur prior to December 21, 2025. If successful Isar will be the first new European rocket company in decades to reach orbit. It will also be the first German company to do so, ever. And it will give Andoya spaceport first place in the race to become Europe’s first orbital spaceport.

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Blue Origin targeting from 12 to 24 New Glenn launches in 2026

9:22 am

New Glenn prior to its first launch in January 2025
New Glenn on the launchpad prior to its
first launch in January 2025

Following the second successful launch last week of its New Glenn rocket, including a successful recovery of its first stage, Blue Origin’s CEO David Limp says the company’s goal for 2026 will be to attempt between 12 and 24 launches.

Limp said success on New Glenn’s second flight would set the company up for a significant increase in cadence. The company is building enough hardware for “well above” a dozen flights in 2026, with the upper-end limit of 24 launches. The pacing item is second stages. Right now Blue Origin can build one per month, but the production rate is increasing.

A pace of one launch a month would be unprecedented for Blue Origin in numerous ways. Since 2017 the company has built a poor reputation for slow and tentative operations. It took years for it to finally begin building BE-4 engines at a rate that could serve both it and its customer ULA. It took years to get New Glenn off the ground, a half decade later than initially announced. Moving from a lazy tortoise to a enthusiastic hare so quickly would thus seem very unlikely.

Blue Origin however has a major 27-launch contract with Amazon to launch its Amazon LEO constellation (formerly known as “Kuiper”). And Amazon desperately needs those launches to happen soon, as it only has 154 satellites in orbit and needs to get about another 1400 launched by July 2026 to meet its FCC license.

Even so, Limp noted that the next New Glenn launch will be to send its Blue Moon Mark-1 unmanned lunar lander to the Moon, and the best schedule he could offer was a launch sometime in the first quarter of ’26. If so, his prediction for the total launches in 2026 seems overly optimistic, at a minimum.

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Will China launch a rescue Shenzhou capsule to Tiangong-3 in one week?

9:07 am

The Tiangong-3 station, as presently configured
The Tiangong-3 station, as presently configured

According to this report at Space News late yesterday, China has issued a road closure notice for its Jiuquan spaceport in northwest China suggesting it will launch a Long March 2F rocket carrying a rescue Shenzhou capsule to Tiangong-3 on November 25, 2025, one week from today.

An airspace closure notice issued Nov. 17 indicates that China is preparing the Shenzhou-22 spacecraft and a Long March 2F rocket for launch at around 11:10 p.m. Eastern Nov. 24 (0410 UTC, Nov. 25) from Jiuquan Satellite Launch Center in the Gobi Desert. China’s human spaceflight agency has yet to publicly announce the plan. [emphasis mine]

This rescue mission is necessary because the Shenzhou-20 capsule that brought the previous crew to the station is now unusable, having sustained damage in one window from an impact of “space debris.” That crew came back to Earth last week on the Shenzhou-21 that ferried the present crew to space, leaving that present crew without a lifeboat.

The highlighted sentence is important, because it is very possible that road closure notice could be for a different launch not yet announced by China. It is quite routine for China to keep the specifics of a launch secret until the last minute, which means it is dangerous to assume this road closure is specifically for the Long March 2F rocket set to carry the Shenzhou-22 capsule to Tiangong-3.

Previous reports only yesterday had noted that preparing that rocket and capsule would likely take at a minimum 10 to 20 days, and even that schedule would be “difficult.” Getting ready in only one week thus seems unlikely.

At the same time, there is great urgency to launch, as the three-person crew presently on Tiangong-3 has no lifeboat there should anything serious go wrong.

Expect China’s state-run press to clarify the situation, when it decides to do so.

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Echostar subsidiary Hughesnet now sending its customers to Starlink

8:01 am

Following the purchase by SpaceX of much of Echostar’s spectrum, its subsidiary Hughesnet appears to be on the verge of shutting down as it is now referring its present and future customers to Starlink.

Hughesnet is preparing to refer its own customers to rival Starlink after its parent company, EchoStar, reached a deal to sell radio spectrum to SpaceX. The referral program is mentioned in a 10-Q SEC filing that Hughesnet released on Friday. The 66-page document includes a section about the EchoStar-SpaceX deal and what it means for Hughesnet’s business. “The commercial agreements will also provide for a fee-based referral program that lets us refer existing HughesNet customers and new Starlink customers to SpaceX,” the document says, without elaborating.

The article also notes that the company lacks the cash on hand to function over the next 12 months, and has lost more than half its customer base in the past year.

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