Category: Points of Information

Very brief descriptions, with appropriate links, of current or recent news items.

Progress docks safely with Zvezda module at ISS

9:24 am

ISS as of today
ISS as of today. Click for original.

In what is increasingly a worrisome procedure, Russia’s just launched Progress freighter successfully docked with the aft port of the Zvezda module at ISS this past weekend, bringing with it more than 5,000 pounds of supplies and research equipment.

The image to the right, annotated additionally by me, shows the present configuration of spacecraft at ISS. The concerns center on the stress fractures that have been found in the Zvezda hull, fractures that have caused the air leak on ISS and are believed attributable to the many dockings to the module since its launch in the late ’90s, as well as the module’s age. It was first built in the late ’80s, making it almost four decades old.

For recent dockings, NASA now closes the hatch between the Russian and American halves of the stations, just in case Zvezda experiences a catastrophic failure. The Russians seem less concerned, but nonetheless they also take extra care during dockings. It is my understanding their astronauts prepare their Soyuz capsule as a lifeboat and immediately escape during these operations.

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Starlink down for about an hour last night

8:53 am

According to several major news sources, Starlink was down for about an hour last night globally, impacting several tens of thousands in the U.S. alone.

More than 37,000 US users were reporting issues with the internet service Monday at 12:30 a.m. ET, according to the website Downdetector.com. By 1:30 a.m., that number had fallen into the hundreds. The internet service owned by Musk’s SpaceX stopped working on “the entire frontline in Ukraine” around 7:30 a.m. Kyiv time (12.30 a.m. ET), said Maj. Robert “Magyar” Brovdi, the commander of Ukraine’s unmanned systems force, on Telegram. As of 8:00 a.m., service was gradually being restored, he said.

I link to CNN, but numerous other outlets thought this story significant enough to give it front page coverage. That this is considered news, however, illustrates perfectly how well Starlink functions normally. A brief outage lasting less than an hour makes the cover of every news outlet in the world, because normally Starlink works without problems for its more than six million subscribers.

SpaceX has not as yet provided any information about the cause of the outage. I suspect we are seeing the result of a hacker attack, possibly by Russia, but that is pure speculation. Even if not, it is in SpaceX’s interest to outline in detail what happened. This has been its policy in the past, but in the previous outage in July the company was not forthcoming. That lack of transparency has not served the company well.

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Space station startup Vast endorses NASA’s new strategy that no longer requires a continuous human presence in space

8:02 am

The American space stations under construction
The American space stations under development

Officials from the space station startup Vast revealed at a conference last week that they endorse NASA’s new strategy that, not only no longer requires the commercial stations to immediately establish a continuous human presence in space, will also award multiple development contracts to the commercial stations.

Speaking Sept. 11 at the Global Aerospace Summit, Max Haot [chief executive of Vast] endorsed NASA’s new strategy, announced more than a month ago, that calls for multiple Space Act Agreements to support development leading to a four-person, 30-day demonstration mission. “We think it’s really the right direction,” he said, noting it accelerates the award timeline. NASA said in a draft solicitation this month it expects to award multiple funded agreements by April 2026, months sooner than under earlier plans.

The original plan had been to choose at most two, but likely only one of the four consortiums/companies that are developing station proposals. The winner would have gotten a big contract that would have also required it to push hard for continuous full time occupation, from day one.

The new plan will instead award smaller development contracts to as many as three of the four station projects, aimed at getting them off the ground and operating, even if astronauts only fly in them intermittently. Eventually the hope is that their capabilities will expand quickly to permanent occupation, especially if they start earning revenue from the private sector, outside NASA. In fact, the smaller government contracts will force them to seek investment and profits elsewhere.

The four commercial stations under development, ranked by me based on their present level of progress:
» Read more

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SpaceX launches Northrop Grumman’s Cygnus freighter to ISS

8:13 pm

SpaceX today successfully launched Northrop Grumman’s Cygnus freighter with more than five tons of cargo, its Falcon 9 rocket lifting off from Cape Canaveral in Florida.

The first stage completed its fourth flight, landing back at Cape Canaveral. The two fairing halves completed their 3rd and 6th flights respectively. Cygnus is expected to be berthed to ISS using the robot arm on September 24, 2025. This is also the first flight of the stretched version of Cygnus, capable of carrying more cargo.

The leaders in the 2025 launch race:

118 SpaceX
53 China
13 Russia
12 Rocket Lab

SpaceX now leads the rest of the world in successful launches, 118 to 92. China also had its own launch scheduled for this evening, but no information about it has yet been released.

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Two launches in the past day

12:19 pm

The beat goes on. Since yesterday afternoon there have been two more global rocket launches, by Russia and SpaceX.

First, Russia launched the sixth GPS-type satellite as part of its next generation Glonass constellation, its Soyuz-2 rocket lifting off from its Plesetsk spaceport in northeast Russia. The rocket’s lower stage fell several different drop zones in Russia. No word if they landed near any habitable areas.

Next, SpaceX this morning launched another 24 Starlink satellites into orbit, its Falcon 9 rocket lifting off from Vandenberg in California. The first stage completed its 28th flight, landing on a drone ship in the Pacific.

The leaders in the 2025 launch race:

117 SpaceX
53 China
13 Russia
12 Rocket Lab

SpaceX now leads the rest of the world in successful launches, 117 to 92.

As for the rankings for the most reuse by a rocket, this is the present leader board:

39 Discovery space shuttle
33 Atlantis space shuttle
30 Falcon 9 booster B1067
28 Columbia space shuttle
28 Falcon 9 booster B1071
27 Falcon 9 booster B1069
27 Falcon 9 booster B1063

Sources here and here.

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September 12, 2025 Quick space links

3:22 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

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House committee support for threatened NASA missions is actually quite questionable

9:26 am

According to a House appropriations committee spending bill that it approved this week, it appears on the surface that it is canceling the proposed 24% cut by Trump to NASA’s budget as well as endorsing continued funding for some threatened missions. A close look however suggests this congressional support for NASA is somewhat superficial, and might actually be ephemeral.

The key is the language of the bill. From the link above:

The bill was largely unchanged from what the CJS [commerce, justice and science] subcommittee approved July 14. It includes $24.838 billion for NASA, nearly the same as the $24.875 billion the agency received in fiscal 2024 and 2025, and far above the $18.8 billion the administration proposed for fiscal 2026 in May.

Members adopted a manager’s amendment, a package of noncontroversial changes and corrections, on a voice vote. That amendment also made additions to the report accompanying the bill. The report includes language expressing support for several NASA missions targeted for cancellation, including the Chandra X-ray Observatory, the Juno mission at Jupiter and the New Horizons mission in the Kuiper Belt.

The report does not specify funding levels for those missions, but the “continues support” language signals to NASA that it should fund continue operations within the agency’s science budget. [emphasis mine]

It is the vagueness of this language that suggests the support is ephemeral. The courts recently have consistently ruled that if Congress doesn’t specifically mandate spending on a project, the White House is free to move money around as it sees fit. By not expressly outlining funding for Chandra, Juno, and New Horizons, these congressmen are playing a shell game, whereby to their constituents they can point to this vote and claim they wholeheartedly supported NASA and these missions. At the same time, they also appear to be allowing Trump the freedom to go ahead and shut the missions down, as his budget has already proposed.

None of this is yet real. The bill still must be passed by the full House, as well as the Senate. It then has to be signed by Trump. A lot of changes would happen in that process.

Either way, it appears that within the House at least, there is some movement to at least make some budget cuts possible. The sad thing is that the House is not actually cutting the budget, even as it is allowing Trump a way to cut these relatively inexpensive on-going missions. Considering the debt, it would have been much better had the committee actually trimmed NASA’s budget, even a little, while at the same time allocating specific funds to keep these very cost-effective missions alive.

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Italian rocket company Avio commits $469 million to expand operations

8:59 am

The Italian rocket company Avio, which owns the Vega-C rocket, today announced that is has approved a $469 million fund to expand its manufacturing capabilities, including building a production facility in the United States.

Announced on 12 September, the capital raise is part of a new ten-year business plan targeting an average annual growth rate of about 10% in turnover and more than 15% in core profit (EBITDA). This growth will be driven by a higher Vega C launch cadence, the introduction of Vega E, continued participation in the Ariane 6 programme, and the construction of a new defence production facility in the United States, which is expected to be completed by 2028.

The management of Vega-C had previously been controlled by the European Space Agency’s (ESA) commercial arm, Arianespace, which had owned and operated all of Europe’s rockets. ESA however is eliminating that commercial arm, shifting from the government-run model to the capitalism model, whereby it simply acts as a customer buying services from the private sector.

As part of that shift, Avio is in the process of taking back its Vega-C from Arianespace. Beginning next year it will be marketing the rocket directly to customers. This major investment reflects this change. The company is now free to pursue profits wherever it can find them, and it appears it wishes to market itself aggressively to American satellite companies as well as its defense industry.

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SpaceX launches Indonesian commercial communications/broadband satellite

8:54 pm

SpaceX tonight successfully launched an Indonesian commercial communications/broadband satellite, its Falcon 9 rocket lifting off from Cape Canaveral in Florida.

The first stage completed its 23rd flight, landing on a drone ship in the Atlantic. The two fairings completed their 16th and 24th flights respectively.

The leaders in the 2025 launch race:

116 SpaceX
53 China
12 Rocket Lab
12 Russia

SpaceX now leads the rest of the world in successful launches, 116 to 91.

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September 11, 2025 Quick space links

3:04 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

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Russia launches Progress to ISS

9:24 am

Russia today successfully launched a Progress freighter to ISS, its Soyuz-2 rocket lifting off from the Baikonur spaceport in Kazakhstan.

The freighter will dock with the aft port of the Zvezda module in two days. When it does so, expect NASA to require its astronauts to close the hatch between the American and Russia parts of ISS. The agency has real concerns about the stress fractures in Zvezda’s hull that are the cause of the station’s air leaks, and fears it could at some point fail catastrophically during a docking. The odds of this happening are small, but they are larger than they should be.

The leaders in the 2025 launch race:

115 SpaceX
53 China
12 Rocket Lab
12 Russia

SpaceX still leads the rest of the world in successful launches, 115 to 91. The company has another launch scheduled for later today.

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NASA bans Chinese citizens from its facilities or operations

9:09 am

Earlier this week NASA moved to block Chinese citizens with visas from having access to its facilities as well as its entire operations, citing security concerns.

“NASA has taken internal action pertaining to Chinese nationals, including restricting physical and cybersecurity access to our facilities, materials and network to ensure the security of our work,” NASA press secretary Bethany Stevens said on Wednesday. According to Bloomberg, Chinese nationals had previously been allowed to work as contractors or students contributing to research, although not as staff.

But on 5 September several individuals told the outlet they were suddenly locked out of IT systems and barred from in-person meetings. They spoke on condition of anonymity.

Though both the Chinese press and the leftist news outlet above (The Guardian) whine about this move, it makes great sense, and should have been done years ago. Though I am sure most of these Chinese citizens are not spies, China’s policy has been to consistently use such citizens for spying, and letting such people into NASA operations makes no sense.

Moreover, shouldn’t NASA be hiring Americans first and foremost?

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SpaceX launches military payload for the Pentagon’s Space Development Agency

4:32 pm

SpaceX early today successfully launched a classified military payload for the Pentagon’s Space Development Agency, its Falcon 9 rocket lifting off from Vandenberg Space Force Base in California.

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

I did not post this in the morning because there was a second SpaceX launch scheduled for the afternoon, and I planned on posting both launches in one post. That launch however was scrubbed and rescheduled for tomorrow.

The leaders in the 2025 launch race:

115 SpaceX
53 China
12 Rocket Lab
11 Russia

SpaceX now leads the rest of the world in successful launches, 115 to 90.

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September 10, 2025 Quick space links

3:19 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

  • On this day in 1975, Viking 2 launched to Mars
    Like its twin Viking 1, it included an orbiter and a lander. Both landers were focused far too much on looking for evidence of Martian life, a search that was unrealistic for the first two human spacecraft to arrive on a planet with the surface area equivalent to the continents on Earth.
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Update on what SpaceX learned about Starship’s tiles during the 10th test flight

11:27 am

Superheavy after its flight safely captured at Boca Chica
Superheavy after the October 2024 flight,
safely captured during the very first attempt

Link here. The update comes from a presentation given this week by Bill Gerstenmaier, SpaceX’s executive in charge of build and flight reliability, at the American Astronautical Society’s Glenn Space Technology Symposium in Cleveland.

Lots of new details. First, almost no tiles fell off during this flight. More significant, they found that the use of metal tiles won’t work. They tested three, and found that “The metal tiles… didn’t work so well.”

Gestenmaier also outlined how the flight provided the necessary data for sealing the gaps between the tiles better.

Gerstenmaier pointed to a patch of white near the top of Starship’s heat shield. This, he said, was caused by heat seeping between gaps in the tiles and eroding the underlying material, a thermal barrier derived from the heat shield on SpaceX’s Dragon spacecraft. Technicians also intentionally removed some tiles near Starship’s nose to test the vehicle’s response.

“It’s essentially a white material that sits on Dragon and it ablates away, and when it ablates, it creates this white residue,” Gerstenmaier said. “So, what that’s showing us is that we’re having heat essentially get into that region between the tiles, go underneath the tiles, and this ablative structure is then ablating underneath. So, we learned that we need to seal the tiles.”

They hope to do the 11th test flight in October, repeating the same suborbital configuration of previous flights, using the same version 2 of Starship. The plan will then be to follow up with a first suborbital flight of version 3 in 2026, followed quickly by orbital flights. During one of those orbital flights they will also try to do a chopstick catch of Starship. They also hope to do the first refueling tests next year.

All in all, it appears the test program is proceeding as hoped, and is about to accelerate significantly.

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NASA promotes the non-discovery of life on Mars by Perseverance

11:09 am

It's all a game of Kibuki theater
It’s all a game!

In what can only be called a kabuki theater stunt, NASA today held a press conference and issued a press release promoting what is essentially the non-discovery of life on Mars by the science team operating the rover Perseverance.

Agency officials, led by acting NASA administrator Sean Duffy, proudly claimed the discovery justified the oft-stated goal of Perseverance, to find life on Mars.

“This finding by Perseverance, launched under President Trump in his first term, is the closest we have ever come to discovering life on Mars. The identification of a potential biosignature on the Red Planet is a groundbreaking discovery, and one that will advance our understanding of Mars,” said acting NASA Administrator Sean Duffy.

This is all garbage. First, Perseverance’s real objective has never been to find life on Mars. It is there to study the planet’s geology. If it should happen to detect a biosignature that would be great, but doing so has always been highly unlikely.

Second, the discovery that Duffy touts is itself quite underwhelming. The key quote from the press release that immediately precedes Duffy’s claim is very telling:

A potential biosignature is a substance or structure that might have a biological origin but requires more data or further study before a conclusion can be reached about the absence or presence of life.

Furthermore, the biosignature that Duffy touts is actually not really a biosignature. They found “a distinct pattern of minerals” that might be sometimes be related to life processes, but not always.

The combination of these minerals, which appear to have formed by electron-transfer reactions between the sediment and organic matter, is a potential fingerprint for microbial life, which would use these reactions to produce energy for growth. The minerals also can be generated abiotically, or without the presence of life. [emphasis mine]

In other words, the data is very uncertain. It certainly doesn’t merit the loud push NASA and Duffy is giving it.

I suspect this push is the result of NASA’s fundamental lie about Perseverance’s so-called search for life, a lie that can never really be fulfilled. It is also related to hiding Perseverance’s limited capabilities. For example, Curiosity has a small lab allowing scientists to analyze samples in great detail. If Curiosity came across a real biosignature, it would be able to identify it.

Perseverance lacks this ability, because in its stead it has equipment for preserving core samples for later pick-up. All it really was designed to do was to gather those core samples. It can’t really do the same kind of ground analysis as Curiosity.

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Scientists detect methane gas on the dwarf planet Makemake orbiting the Sun beyond Neptune

10:05 am

Makemake, as seen by Hubble in 2016
Makemake and the discovery of its small moon,
as seen by Hubble in 2016. Click for original image.

Using the Webb Space Telescope, scientists have identified the spectroscopic signal of methane gas on the dwarf planet Makemake that orbits the Sun in the Kuiper belt, suggesting this planet like Pluto might have an intermittent atmosphere.

At about 890 miles (1,430 km) in diameter and two-thirds the size of Pluto, Makemake has long been a source of scientific intrigue. Stellar occultations suggested that it lacked a substantial global atmosphere, though a thin one could not be ruled out. Meanwhile, infrared data of Makemake — including JWST measurements — hinted at puzzling thermal anomalies and unusual characteristics of its methane ice, which raised the possibility of localized hot spots across its surface and potential outgassing.

…“This discovery raises the possibility that Makemake has a very tenuous atmosphere sustained by methane sublimation,” said Dr. Emmanuel Lellouch of the Paris Observatory, another co-author of the study. “Our best models point to a gas temperature around 40 Kelvin (-233 degrees Celsius) and a surface pressure of only about 10 picobars — that is, 100 billion times below Earth’s atmospheric pressure, and a million times more tenuous than Pluto’s. If this scenario is confirmed, Makemake would join the small handful of outer solar system bodies where surface–atmosphere exchanges are still active today.”

It is also possible that the methane gas detected could be coming from volcanic plumes, not unlike the plumes found on the Saturn moon Enceladus.

These results prove once again that even though planets like Pluto and Makemake sit very far from the Sun and thus get little energy from it, they can still have active geological processes. Of all the discoveries produced by New Horizons when it flew past Pluto in 2015, this discovery was the most significant.

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Croatian startup moves up the launch date for two subscale returnable capsules

9:44 am

The Croatian startup Genesis Space Flight Laboratories (Genesis SFL) has now accelerated the development of its orbital returnable capsule for manufacturing in space, moving up the launch date for its first two subscale demonstrator capsules from 2027 to 2026.

Initially planned for 2027, the missions were moved forward after Genesis SFL announced on 9 September that it had secured earlier slots with an as-yet-undisclosed launch provider.

Speaking to European Spaceflight, Genesis SFL CEO Bence Mátyás explained that the company’s GEN-1 and GEN-2 demonstrators will likely be the smallest reentry capsules ever flown, comparable in size to picosatellites. Despite their diminutive size, the capsules will be capable of remaining in orbit for approximately six months before performing reentry procedures, a capability made possible by the use of a host satellite [essentially the service module] also under development by the company. Once on a reentry trajectory, the capsule will separate from its host satellite and deploy a mini-parachute and antenna to enable recovery following a splashdown.

If these demonstrators succeed, the company plans to scale up later GEN capsules step-by-step, eventually matching and even exceeding those of companies like Varda.

The returnable capsule industry appears at the moment to be bursting with new companies. In the U.S. we have Varda, Inversion Space, Sierra Space, and even SpaceX using Starship. In Europe — in addition to Genesis in Croatia, we have The Exploration Company in France, Atmos in Germany, PLD in Spain, and Space Cargo in Luxembourg. And I am certain there are others that I am missing.

Very clearly the investment community sees big profits in using orbital capsules to manufacture products for later sale on Earth.

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Rather than streamline red tape, a UK government committee proposes it should fund its space industry directly

9:28 am

Proposed spaceports surrounding Norwegian Sea
Proposed spaceports surrounding Norwegian Sea

In a move that will do nothing to solve the red tape that has stymied the spaceports in Scotland as well as the launch industry in the United Kingdom, a Scottish government committee has concluded that the solution is for the UK government to become a direct investor in its space industry, increasing funding to both its spaceports and any launch companies that wish to use them.

The Scottish Affairs Committee heard from a number of experts and figures involved in the space industry. Professor Malcolm Macdonald, of Strathclyde University, said the UK had not always sustained its “first-mover” advantage in the space launch sector.

The report’s conclusion stated: “It is clear that the UK is falling behind its European counterparts in terms of public investment, leaving Scottish spaceports at a competitive disadvantage in a fast-moving global market. Without sustained backing from the Government – particularly in infrastructure – Scotland risks missing a generational opportunity to lead in space launch. To fully realise this potential, the UK Government needs to go further and faster.”

The MPs called for sustained Government investment in infrastructure.

The report also noted that despite a half-decade head start in establishing its spaceports in Scotland, the Andoya spaceport in Norway is now winning the race to become Europe’s prime spaceport.

Talk about not seeing the forest for the trees. The reason the UK’s spaceports have fallen behind is because its regulatory framework is impossible to navigate, taking years to get any approvals. But rather than fix this, this committee proposes throwing taxpayer money at the problem.

My prediction: It won’t work. Outside rocket companies will continue to move away from the UK, while any that get government investment to stay will find it difficult to get business, because it will still be impossible to get launch licenses when needed.

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India’s government finalizes deal to transfer operation of its SSLV rocket to a private company

9:13 am

India’s government and its various space agencies yesterday finalized its deal with the Indian company Hindustan Aeronautics Limited (HAL) to take over the manufacture and operation of its government-designed SSLV rocket (Small Satellite Launch Vehicle) for the next decade.

Under the technology transfer contract that HAL signed with ISRO, Indian National Space Promotion and Authorisation Centre (IN-SPACe) and NewSpace India Limited (NSIL), the aviation major will absorb the technology in the first two years, which will be followed by a 10-year production phase. The agreement grants HAL a non-exclusive, non-transferable license to the SSLV technology, which includes comprehensive design, manufacturing, quality control, integration, launch operations, and post-flight analysis documentation, as well as training and support. HAL will be responsible for the mass production of SSLV to meet Indian and global demands,” the company says in a statement.

Initially the Modi government had implied the transfer would involve ownership of the rocket by the private company, so that it could market the rocket for profit. The actual deal does not do this. Instead, it gives HAL the responsibility to manufacture and operate the rocket, but it appears sales and ownership will still be under the control of India’s space agency ISRO. If this is correct, the deal accomplishes less than nothing, and in fact simply adds another player in the game, making the SSLV rocket less competitive in the international market.

Then again, the Modi government might see this deal as just a first step in the transition from a government-run space program to a competitive independent space industry. It needs to wrest control from ISRO, and this can’t be done politically in one fell swoop.

To me however this deal for HAL is a bad one. It now has the responsibility for making and launching the rocket, but none of the benefits.

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South Korea military begins project to develop a methane-fueled rocket engine

8:01 am

The South Korean defense department has awarded a consortium of Korean aerospace companies a contract to develop a methane-fueled engine that can be used in reusable rockets.

According to the space industry, a consortium led by Hyundai Rotem and Korean Air was selected on the 9th as the preferred negotiator for a 35-ton methane engine technology development project overseen by the Agency for Defense Development (ADD) under the Defense Acquisition Program Administration (DAPA). A formal agreement will be signed in November, initiating full-scale research and development (R&D). The project, budgeted at approximately 49.1 billion Korean won [$35 million], will run until 2030.

It appears there has been a turf war between the military and South Korea’s newly formed space agency, KASA. Originally KASA had planned to develop this engine, but apparently the military’s proposal won out. KASA now says it will collaborate with the ADD, but the project’s budget now goes to the military.

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China proposes its own mission to Apophis

9:50 am

Apophis' path past the Earth in 2029
A cartoon (not to scale) showing Apophis’s
path in 2029

Though it is not clear the Chinese government has approved the mission, Chinese scientists have now proposed a mission to to rendezvous with the potentially dangerous asteroid Apophis when it does its next close fly-by of the Earth in April 2029.

The mission would consist of two small satellites sent into a halo orbit around Sun-Earth Lagrange point 1 to await the approach of Apophis and transfer into a flyby orbit so as to meet the asteroid shortly after its close encounter with the Earth. The asteroid is due to pass within the geosynchronous orbit belt on Friday, April 13, 2029.

The Apophis mission would be added to a more ambitious larger asteroid mission, also not yet approved, dubbed CROWN, that would launch six spacecraft into “Venus-like, heliocentric orbits” where they would search and track Near-Earth Asteroids that are hard to spot because they are closer to the Sun than Earth.

China recently unveiled a blueprint to develop what it calls a “near-Earth asteroid defense system.” It appears the scientists for the project above are lobbying to get picked up as part of that blueprint. I should add that they first pushed this project in June, and three months later it still remains unfunded.

At present, there are many flying, planned, and proposed missions to reach Apophis during its 2029 fly-by. Osiris-Apex is on its way, having been repurposed after doing its sample return mission to Bennu. Europe is currently building its Ramses probe, which will also include two cubesats. Though other probes have been proposed, none have yet been approved.

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China launches 11 more satellites for its Geely satellite constellation

8:09 pm

Earlier today China successfully launched 11 more satellites for its Geely satellite constellation, its Smart Dragon-3 rocket lifting off from a launch platform off the eastern coast of China.

Video of the launch can be found here (Hat tip to BtB’s stringer Jay). This was the fifth launch for this constellation, bringing the number of satellites in orbit for this planned 240 satellite constellation to 52. The constellation is designed to provide positioning and communications for trucking and other ground-based businesses.

The leaders in the 2025 launch race:

114 SpaceX
52 China
12 Rocket Lab
11 Russia

SpaceX still leads the rest of the world in successful launches, 114 to 89.

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September 8, 2025 Quick space links

3:14 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

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Clumps of dust in a star-forming cluster

12:28 pm

Clumps of dust in a star-forming region
Click for original image.

Cool image time! The picture to the right, cropped and reduced to post here, was taken by the Hubble Space Telescope as part of a study of the dusty clouds inside star-forming regions. From the caption:

Stars in a star cluster shine brightly blue, with four-pointed spikes radiating from them. The centre shows a small, crowded group of stars while a larger group lies out of view on the left. The nebula is mostly thick, smoky clouds of gas, lit up in blue tones by the stars. Clumps of dust hover before and around the stars; they are mostly dark, but lit around their edges where the starlight erodes them.

This cluster sits inside the Large Magellanic Cloud, about 160,000 million light years away and the largest of the several known dwarf galaxies to orbit the Milky Way. It is the second largest such star-forming region with that dwarf galaxies, and thus is a prime research target for studying the birth of stars.

I especially like this image because of the small dust clouds that sit in the foreground, blobs of material that is slowly being ionized away by the radiation from the stars.

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Has Curiosity stumbled upon a small slope streak?

10:25 am

Is that a slope streak in the lower right?
Click for original.

Overview map
Click for interactive map

In reviewing the pictures downloaded today by the Mars rover Curiosity, I noticed something very intriguing in the pictures taken by rover’s two navigation cameras. One such picture is above, taken by the right navigation camera and looking west across the boxwork ridges that Curiosity has been traversing for the past two months. You can see two such ridges in the right foreground, cutting diagonally from left to right.

The overview map to the right gives the context, with the blue dot marking Curiosity’s position. The white and red dotted lines indicate its actual and planned routes respectively, with the top inset zooming in to show the recent travels more clearly. The yellow lines show the approximate area covered by the picture above.

Note the dark streak in the lower right of the picture. The bottom inset on the overview map shows this streak more closely. To my eye, it strongly resembles a slope streak, a strange geological feature unique to Mars.

If I am right, expect the rover team to focus in on this streak. The cause of slope streaks remains unknown. From orbit, the streaks look like avalanches at first glance, but they don’t change the topography, have no debris pile at their base, and sometimes even travel up and over rises as they head downhill. They can occur randomly throughout the year, can be bright or dark, can occur anywhere, and fade with time.

There are a number of theories (see here, here, and here) attempting to explain their cause, but none has been confirmed. If this is a streak, it will be the first that any scientist can see up close.

It is also very likely my guess is wrong, and this is not a streak. Stay tuned for updates.

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