Tag: engineering

Curiosity’s exploration of boxwork on Mount Sharp

11:55 am

Curiosity panorama, December 18, 2025
Click for high resolution panorama. For original images, go here, here, and here.

Overview map
Click for interactive map.

Cool image time! The panorama above was created from three photographs taken on December 18, 2025 (here, here, and here) by the right navigation camera on the Mars rover Curiosity.

The view is north, looking down the flanks of Mount Sharp and across the floor of Gale Crater to its rim about 20 to 30 miles away. In comparing this view with a similar one taken in July, it is obvious that the Martian atmosphere has become far dustier during the last six months. The rim and the mountains beyond are hardly visible now through the haze.

The blue dot on the overview map to the right marks Curiosity’s present position. The yellow lines indicate roughly the area covered by this panorama. The while dotted line indicates the rover’s travels, while the red dotted line its planned routes.

As you can see by both the rover’s tracks in the panorama above and the white dotted line in the overview, Curiosity has been traversing back and forth across the boxwork formation of criss-crossing ridges for more than half a year, as the science team attempts to decipher what caused these ridges and hollows. They have also done some drilling in this effort.

The science team has been getting close to the day it will move on, resuming Curiosity’s climb of Mount Sharp, but they keep finding things amidst this boxwork that requires additional study. For example, consider this from yesterday’s update:
» Read more

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A new commercial smallsat space telescope is now operational and offering its data to scientists

9:51 am

Mauve space telescope
Mauve space telescope. Click for source.

Capitalism in space: A new commercial optical space telescope with a 5-inch-wide mirror and dubbed the Mauve Telescope is now operational in orbit, with its private owner, UK startup Blue Skies, offering its data to scientists for an annual subscription fee.

Blue Skies is in the process of commissioning the Mauve and plans to start delivering data to scientists in early 2026. Customers include Boston University, Columbia University, INAF’s Osservatorio Astrofisico di Arcetri, Konkoly Observatory, Kyoto University, Maynooth University, the National Astronomical Observatory of Japan, Rice University, Vanderbilt University, and Western University.

The spacecraft’s three-year mission is to study flares from stars and their impact on the habitability of planets around them. From low Earth orbit, it hosts a telescope that can collect data in the ultraviolet to visual light range (200-700 nm spectrum).

With such a small mirror Mauve is not going to be able to do a lot of ground-breaking work, though there are definitely observations of value it can accomplish, such as those listed above. Its main purpose is as a demonstration project to attract a bigger round of new investment capital, from universities like the ones listed above, for launching a larger private telescope with greater capabilities.

This is how all telescopes were funded in the U.S. until World War II, through private funds privately built. Blue Skies effort here suggests we are heading back to that model, with government budgets increasingly constrained. The company is already working on a second and larger space telescope, dubbed Twinkle with a 18-inch primary mirror. It hopes over time to continue to scale up its orbital telescopes until it is matching Hubble and Webb, and doing so faster and at far less cost.

And for profit no less!

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Something caused a Starlink satellite to tumble and its fuel tank to vent

9:00 am

According to an update yesterday by SpaceX on X, one of its many Starlink satellites is now tumbling with its fuel tank venting, and is thus losing altitude.

On December 17, Starlink experienced an anomaly on satellite 35956, resulting in loss of communications with the vehicle at 418 km. The anomaly led to venting of the propulsion tank, a rapid decay in semi-major axis by about 4 km, and the release of a small number of trackable low relative velocity objects. SpaceX is coordinating with the @USSpaceForce and @NASA to monitor the objects.

The satellite is largely intact, tumbling, and will reenter the Earth’s atmosphere and fully demise within weeks. The satellite’s current trajectory will place it below the @Space_Station, posing no risk to the orbiting lab or its crew.

Either the tank burst, or got hit with something causing it to burst.

The media reports I’ve seen have tried to make this event more significant than it is. First, it is remarkable how few of SpaceX’s thousands of Starlink satellites have failed in this manner. These low numbers show how this incident is rare and not very concerning. Second, the spacecraft’s orbit is decaying, and will soon burn up harmlessly in the atmosphere. It will not add any space junk to low Earth orbit.

In fact, that this event illustrates more than anything how well SpaceX manages its Starlink constellation. Thousands of satellites launched, and only a handful have failed like this.

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New study: AI is corrupting the minds of children

12:26 pm

AI report
Click for source.

A new study has found that the unsupervised use of AI by young children increasingly has them involved in bad things that are violent and emotionally harmful.

A new report conducted by the digital security company Aura found that a significant percentage of kids who turn to AI for companionship are engaging in violent roleplays — and that violence, which can include sexual violence, drove more engagement than any other topic kids engaged with.

Drawing from anonymized data gathered from the online activity of roughly 3,000 children aged five to 17 whose parents use Aura’s parental control tool, as well as additional survey data from Aura and Talker Research, the security firm found that 42 percent of minors turned to AI specifically for companionship, or conversations designed to mimic lifelike social interactions or roleplay scenarios. Conversations across nearly 90 different chatbot services, from prominent companies like Character.AI to more obscure companion platforms, were included in the analysis.

Of that 42 percent of kids turning to chatbots for companionship, 37 percent engaged in conversations that depicted violence, which the researchers defined as interactions involving “themes of physical violence, aggression, harm, or coercion” — that includes sexual or non-sexual coercion, the researchers clarified — as well as “descriptions of fighting, killing, torture, or non-consensual acts.”

Half of these violent conversations, the research found, included themes of sexual violence. The report added that minors engaging with AI companions in conversations about violence wrote over a thousand words per day, signaling that violence appears to be a powerful driver of engagement, the researchers argue. [emphasis mine]

You can read the study here. As bad as this data above is, the most frightening aspect of the report is this quote:
» Read more

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Ancient Martian drainage into crater lake, now turned into ridges

11:41 am

Inverted channels
Click for original image.

Cool image time! The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on September 9, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the science team labels “an inverted channel.” From the caption:

Topographic inversion is a process where geologic features that were once low-lying, like impact craters or riverbeds, become elevated over time, like mesas or ridges. In this process, a crater or channel is filled with lava or sediment that becomes lithified [hardened]. If this infill is more resistant to erosion than the surrounding landscape, the less-resistant material can be eroded away by wind or water. The former crater or valley fill, being more resistant, remains elevated as the landscape around it lowers. The original low-lying feature becomes a mesa or ridge.

In this image, an ancient river network and nearby impact craters have undergone topographic inversion. Impact craters contain round mesas within them, and the stream channel is defined by a network of ridges.

The location of this inverted channel makes its history even more interesting.
» Read more

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More delays expected in India’s first manned Gaganyaan orbital mission

9:30 am

Artist rendering of India's Gaganyaan capsule
Artist rendering of India’s Gaganyaan capsule

It appears that India’s space agency ISRO is now hinting that the first manned orbital flight of India’s Gaganyaan capsule will not occur in 2027 as planned, but could be delayed until 2028.

ISRO had hoped to fly the first unmanned orbital test flight, Gaganyaan G1, before the end of this year, followed by several more unmanned flights in 2026, with the manned flight in 2027. G1 however has slipped to early 2026, though it appears the mission is finally coming together.

In a response to a question posed at the Lok Sabha, the State Minister for Space, Jitendra Singh noted that the first Gaganyaan mission is nearly ready to fly, “Major infrastructure such as the Orbital Module Preparation Facility, Gaganyaan Control Centre, Crew training facility have been established. Second launch pad modifications have been incorporated. Precursor missions such as TV-D1 and IADT-01 have been successfully accomplished. Ground tracking networks, terrestrial links and IDRSS-1 feeder stations have been established. Crew Module Recovery plan as well as assets to be deployed have been finalized. For the first uncrewed mission (G1), all HLVM3 stages and CES motors are ready. Crew and Service Module systems have been realized. Assembly and integration activities are nearing completion.”

…The Gaganyaan G1 flight is the first of eight planned missions as part of an expanded programme cleared by the Union Cabinet last year with a total budget of Rs 20,193 crore. Initially, the programme was envisioned with two developmental flights followed by a crewed flight, with a budget of Rs 9,023 crore. There are now two crewed flights in the revised campaign, with ISRO aiming for the first crewed flight in 2027-28. [emphasis mine]

The highlighted dates are the first time ISRO has suggested the first manned flight might slip to 2028.

When the Gaganyaan program was first announced in 2018, the first manned flight was scheduled for 2022. Since then that schedule has been repeatedly delayed. I suspect ISRO’s schedule will only become more reliable after it finally completes that first G1 orbital test flight.

The endless incremental delays however are reminiscent of NASA’s Artemis program, designed to hide a sluggish program with problems.

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Station module builder Max Space announces new Thunderbird inflatable module

8:30 am

Thunderbird, with cut-out showing interior and person for scale
Thunderbird, with cut-out showing interior and person
for scale. Click for original images.

The startup Max Space yesterday unveiled a new larger and upgraded inflatable module, dubbed Thunderbird, that it proposes to sell to the various space stations being built in the U.S. and globally.

Thunderbird Station is built to support 4 or more crew members continuously, with an incredible 350m³ of pressurized volume, more than triple that of a standard ISS module. Launched on a single standard Falcon 9 rocket, the full expandable habitat launches compactly and expands 20x once deployed in orbit, requiring no in-orbit assembly. The interior features a novel reconfigurable architecture, morphic interior structure,that allows astronauts to dynamically adapt the space for research, manufacturing, or living during a mission. The design was developed in collaboration with veteran astronauts to take full advantage of three-dimensional volume in microgravity, not just traditional floor and wall space, to create the most spacious and functional habitable volume ever built. [emphasis in original]

The company also announced that it plans to fly a much smaller demonstration mission of this inflatable module design in the first quarter of 2027, launching on a Falcon 9 rocket and dubbed Mission Evolution.

The primary objective is to test and verify the on-orbit deployment of the expandable module with its exceptional micrometeoroid protection layers. After many years of successful ground testing and development, the flight unit is in full production and is scheduled for launch Q1 2027 onboard a scheduled SpaceX launch.

Max Space first appeared in 2024 when it announced its intention to fly an inflatable demo mission by 2025. Obviously that schedule has undergone some significant delays, though it appears the company used the time to refine its designs considerably. Its management includes one former NASA astronaut and one former member of the Bigelow space station team that built the first private orbiting inflatable modules, Genesis-1, Genesis-2, and BEAM (still operating on ISS).

The company is not trying to build its own space stations. Instead, it is marketing its inflatable modules to all the other space station startups as a quick way to get an additional large module added to their stations.

Hat tip to BtB’s stringer Jay.

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South Korean rocket startup Innospace signs deal to launch from Australia

8:02 am

Proposed Australian spaceports
Australian spaceports: operating (red dot) and proposed (red “X”)
Click for original image.

The South Korean rocket startup Innospace — about to attempt its first orbital launch from Brazil on December 19, 2025, earlier this week signed an agreement with Australia’s Southern Launch spaceport to launch its rockets from there.

Leading space mission service provider Southern Launch has signed South Korean launch service provider Innospace to conduct space missions from the Whalers Way Orbital Launch Complex and the Koonibba Test Range. This strategic partnership enables Innospce to conduct a diverse range of missions from Southern Launch sites, including orbital satellite launches and suborbital technology demonstrations.

Beginning in 2026 and continuing for at least the next decade, this agreement strengthens South Australia’s position as an emerging global hub for space innovation.

Whether or not its launch from Brazil’s long unused Alcantera spaceport is a success, it appears Innospace was looking for another spaceport option closer to South Korea. Moreover, Southern Launch has been an on-going active launch site for suborbital launches as well as a landing zone for spacecraft, unlike Alcantera which has sat unused for decades. That activity probably makes it a more viable place to operate.

Hat tip to BtB’s stringer Jay.

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Rocket Lab launches a set of technology test satellites for Space Force

10:19 pm

Rocket Lab tonight successfully placed into orbit a set of Space Force technology test satellites dubbed DISKSat, its Electron rocket lifting off from Wallops Island in Virginia.

DISKSat is a new standard satellite design, shaped like a flat disk about a yard across and developed by the Aerospace Corporation. The idea is that these disk-shaped satellites will more efficiently fit payload into the standard cylindrical fairings used by rockets. This mission includes four that will be deployed in low Earth orbit, but during the mission will also test operation in much lower orbits than satellites normally fly. I suspect the flat design reduces the atmospheric drag at those low orbits, thus allowing the satellite to remain in orbit for longer time periods.

The leaders in the 2025 launch race:

168 SpaceX
84 China
17 Rocket Lab (a new record)
15 Russia

SpaceX still leads the rest of the world in successful launches, 168 to 140.

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European sea-level satellite releases first data

10:39 am

First data from Sentinel-6B
Click for original.

The European Space Agency’s (ESA) Sentinel 6B satellite, launched a month ago, has now released its first sea-level data.

Following its launch on 17 November 2025, the first data from Sentinel-6B was captured on 26 November by the satellite’s Poseidon-4 altimeter. The image [to the right] is a combination of altimeter data from both the Sentinel-6 sea-level tracking satellites: Sentinel-6B and its twin, Sentinel-6 Michael Freilich, which was launched in 2020. The image shows the Gulf Stream current in the North Atlantic Ocean, off the eastern coasts of the US and Canada.

The Gulf Stream is a hugely important area of the North Atlantic Ocean, not only for the role it plays in global weather patterns and climate, but also because it’s a busy shipping route as well as a key ecosystem for marine species and therefore an important fishing zone.

What makes this particular government press release unusual is that though it is about a climate-related satellite, it makes no mention of global warming and how the sea level rise that has been recorded by the string of similar orbital satellites going back to 1993 is going to eventually drown us all. Maybe that’s because that total rise measured since 1993 equals only about 4 inches. That’s 4 inches of rise detected in more than three decades. At that rate, a little over an inch per decade, it will take centuries to drown anyone, but only those who refuse to walk a few feet to higher ground.

It could be the scientists and government PR hacks that are involved in writing this release also realized that the gig is up, and everyone now knows it, and it would only embarrass them further to push the global-warming hoax again.

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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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Mars Reconnaissance Orbiter’s high resolution camera takes its 100,000 picture

1:54 pm

Oblique view
Click for original image.

Cool image time! On October 7, 2025, the science team that operates HiRISE, the high resolution camera on Mars Reconnaissance Orbiter (MRO), took its 100,000th picture since entering Mars orbit in March 2006.

The objective of this observation is to better resolve sand dunes and the rocky material underneath them. These dark, eroded rocks may be the source for some of these Syrtis Major sand dunes. Our image was suggested by a high school student enrolled in the Jefferson County Executive Internship program in Colorado in 2023, one of many public outreach programs the HiRISE Team engages in.

To celebrate this accomplishment and the fantastic geology of the scene, students and staff in the HiRISE Photogrammetry lab constructed this digital terrain model. This oblique image highlights the hummocky mounds of the plains that border Jezero Crater, which are among the oldest on Mars.

That oblique image, cropped, reduced, and sharpened to post here, is to the right. The location is about 50 miles to the southwest of Jezero Crater where the rover Perseverance landed.
» Read more

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Astronomers propose a new explanation for “Bright Blue Outbursts”

1:16 pm

Among the number of quick transient events discovered by the new automated survey telescopes on the ground and in space that have been built in the past two decades are something astronomers have labeled “bright blue outbursts”, bright flashes of blue and ultraviolet light that appear quickly and then fade away, leaving behind X-ray and radio emissions.

There are several theories as to what causes these flashes, but none are accepted whole-heartedly. Now a team of astronomers have looked at one flash and proposed a new theory.

This curious class of objects is known as luminous fast blue optical transients (LFBOTs), and with slightly more than a dozen discovered so far, astronomers have debated whether they are produced by an unusual type of supernova or by interstellar gas falling into a black hole.

Analysis of the brightest LFBOT to-date, named AT 2024wpp and discovered last year, shows that they’re neither. Instead, a team led by researchers from the University of California, Berkeley, concluded that they are caused by an extreme tidal disruption, where a black hole of up to 100 times the mass of our Sun completely shreds its massive star companion within days.

… “The sheer amount of radiated energy from these bursts is so large that you can’t power them with a core collapse stellar explosion — or any other type of normal stellar explosion,” says Natalie LeBaron, UC Berkeley graduate student and first author on the paper presenting the Gemini data [1]. “The main message from AT 2024wpp is that the model that we started off with is wrong. It’s definitely not just an exploding star.”

The researchers hypothesize that the intense, high-energy light emitted during this extreme tidal disruption was a consequence of the long parasitic history of the black hole binary system. As they reconstruct this history, the black hole had been sucking material from its companion for a long time, completely enshrouding itself in a halo of material too far from the black hole for it to swallow.

Need I mention that this theory, while better explaining the data, remains unconfirmed and decidedly uncertain.

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France and U.S. militaries complete rendezvous maneuvers in orbit

9:21 am

According to a statement by France’s military, the U.S. and France have successfully completed planned rendezvous maneuvers by two of their satellites in orbit.

These operations also apparently included the United Kingdom.

While the neither the US nor its allies have made public the satellites involved in any of the joint RPOs, the private space tracking firm COMSPOC said Sept. 19 that the maneuvers with the UK involved a US Geosynchronous Space Situational Awareness Program (GSSAP) neighborhood watch bird. The GSSAP satellite, USA 271, began moving on Sept. 5 and on Sept. 12 stopped just 13 kilometers (8.1 miles) from the UK’s SKYNET 5A military communications bird, the firm explained.

COMSPOC also watched the Franco-American pas-de-deux, which a company spokesperson told Breaking Defense involved another GSSAP, USA 324, and France’s SYRACUSE 3A. The satellites performed three sets of maneuvers: Nov. 11-14; Nov. 22-23; and Nov. 28-29, according to COMSPOC’s observations. “In all these movements, SYRACUSE 3A seems to lead and USA 324 seems to follow as the maneuvers performed by USA 324 is lagged by a day,” the spokesperson said, with the closest approach being about 25.1 kilometers (15.6 miles). [emphasis mine]

I have highlighted the distances above because these military maneuvers are actually quite unimpressive when compared with similar recent commercial rendezvous and proximity tests in orbit. The just completed Impulse/Starfish test for example got within 1.25 kilometers. And in 2024 Japan’s Astroscale did proximity operations within 50 meters of an old abandoned upper stage.

I suspect the best thing these militaries could do is to stop wasting money trying to do this themselves, and just hire the commercial companies instead. They’d do much better.

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Two launches early today

9:02 am

Both China and the American company ULA successfully completed launches since yesterday.

First, China placed the third satellite in an new Earth observation constellation, its Long March 4B rocket lifting off from its Taiyuan spaceport in northeast China.

Developed by the China Academy of Space Technology, the satellite will join the Ziyuan III 02 and 03 satellites already in orbit to form a high-precision observation constellation. Equipped with a stereoscopic mapping camera, multispectral camera, and laser altimeter, it will capture high-resolution 3D imagery critical for geographic data collection and natural resource management.

It appears however that this constellation is used by China’s military, so I suspect its purposes do not exactly match this description. China’s state-run press also provided no information as to where the rocket’s lower stages, using very toxic hypergolic fuels, crashed inside China.

Next, ULA launched another 27 Leo satellites for Amazon, its Atlas-5 rocket lifting off from Cape Canaveral in Florida. Amazon now has 181 satellites in orbit, with a requirement to get about 1,600 in orbit by July 2026 to meet its FCC license obligations. As it took about eight months to get those first 181 satellites into space (with SpaceX launching 72), Amazon’s three launch providers, ULA (42 launches), Arianespace (18 launches), and Blue Origin (27 launches), will have to ramp up their launch rate significantly to get even close to meeting those obligations in the next six months. There is also a question whether Amazon can manufacture enough satellites at a fast enough pace for those rockets.

As for the rocket, ULA now has only ten Atlas-5 rocket left in stock, with four reserved for Leo launches and six for Boeing’s Starliner manned capsule.

This was also ULA’s sixth launch in 2025. The leaders in the 2025 launch race:

166 SpaceX
84 China (a new record)
16 Rocket Lab
15 Russia

SpaceX now leads the rest of the world in successful launches, 166 to 138.

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Updates on the status of two Mars missions, Maven and Escapade

7:59 pm

NASA today posted two separate updates on the status of two of its missions to or at Mars.

First, it appears there is an issue with one engine on one of the two Escapade orbiters on their way to their parking orbit where they will await the right moment to head to Mars.

During trajectory correction maneuvers for NASA’s twin ESCAPADE spacecraft on Dec. 8 and Dec. 12, the mission operations team noticed low thrust during the burn for one of the spacecraft. The team is working to identify the cause and will attempt a trajectory correction maneuver in the coming weeks.

The other spacecraft has successfully completed its two trajectory correction maneuvers, as planned. Both spacecraft are operating normally otherwise, and currently there are no long-term impacts from the trajectory correction delay.

While not the best news, this issue does not at this moment appear critical.

The second update however was even more negative. It appears engineers have not yet been able to re-establish contact and control of the Mars orbiter Maven.

To date, attempts to reestablish contact with the spacecraft have not been successful. Although no spacecraft telemetry has been received since Dec. 4, the team recovered a brief fragment of tracking data from Dec. 6 as part of an ongoing radio science campaign. Analysis of that signal suggests that the MAVEN spacecraft was rotating in an unexpected manner when it emerged from behind Mars. Further, the frequency of the tracking signal suggests MAVEN’s orbit trajectory may have changed. The team continues to analyze tracking data to understand the most likely scenarios leading to the loss of signal. Efforts to reestablish contact with MAVEN also continue.

It appears the loss of Maven is also impacting communications with the two Mars rovers Curiosity and Perseverance. While NASA has use of three orbiters at present, Mars Reconnaissance Orbiter, Mars Odyssey, and Europe’s Trace Gas Orbiter, to relay data from the ground to Earth, the loss of Maven reduces that communications network by 25%. Engineers are revising plans to make up some of the loss, but operations for both rovers will be for the time being reduced somewhat.

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An Impulse tug using Starfish equipment has successfully completed autonomous rendezvous maneuvers

9:42 am

Remora rendezvous
Images taken by Starfish’s camera.

A Mira orbital tug built by the startup Impulse Space has successfully completed rendezvous and proximity operations near a previously launched Mira tug, using software and equipment provided by the startup Starfish Space.

The Remora mission marked an industry first: a fully autonomous rendezvous executed by Starfish with a single lightweight camera system and closed-loop guidance, navigation and control software running on a peripheral flight computer.

Starfish and Impulse conducted the mission using Impulse’s Mira spacecraft that was flown on the Impulse LEO Express 2 mission. Starfish’s payloads enabled Mira to perform close-proximity maneuvers with another Impulse Mira spacecraft on orbit, which had been previously used for the LEO Express 1 mission. During operations in LEO, Starfish software autonomously controlled the LEO Express 2 Mira, guiding the satellite through a series of maneuvers which ultimately brought it to within approximately 1,250 meters of the LEO Express 1 Mira.

The significance of this test is its simplicity. Starfish has now demonstrated rendezvous technology that cubesats can use. Previously such precise maneuvers could only be done by larger satellites using more complex equipment. Starfish has orbital tug contracts using its own Otter tug, and will use this technology on those missions.

Impulse meanwhile demonstrated the maneuverability of its own Mira tug. And both companies demonstrated the ability to put this mission together quickly, in about nine months, and then launch it on a SpaceX rocket.

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SpaceX launches another 29 Starlink satellites

9:13 am

SpaceX last night successfully placed another 29 Starlink satellites into orbit, its Falcon 9 rocket lifting off from Cape Canaveral in Florida.

The first stage completed its 9th flight, landing on a drone ship in the Atlantic.

The leaders in the 2025 launch race:

166 SpaceX (a new record)
83 China
16 Rocket Lab
15 Russia

SpaceX now leads the rest of the world in successful launches, 166 to 136.

8 comments

Software issue forces Russia to delay Proton launch until next year

11:28 am

Because of a software issue detected once the rocket was arrived in Baikonur, Russia has been forced to delay one of its last Proton launches from next week until next year, with the new launch date undetermined.

[O]n Dec. 13, 2025, final checks revealed a problem in the Block DM-03 upper stage which forced to postpone the launch, Roskosmos announced. According to the Zakryty Kosmos Telegram channel, a software issue will require the return of the rocket back to the processing building and the disassembly of the payload section. The potential need to ship the onboard avionics back to the manufacturer would likely push the mission well into 2026.

Proton has largely been retired, though it appears it has some undetermined number of military and government launches left on its manifest. In 2023 there were discussions to restart its assembly line, but nothing since has been announced.

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Components for the first Ariane-6 Amazon’s Leo launch shipped to French Guiana

11:20 am

The components for the first Ariane-6 launch in its 18-launch contract with Amazon are now on their way by boat to French Guiana for a launch earlier in 2026.

Amazon’s low Earth orbit satellite network, Amazon Leo, reached another milestone this week as Arianespace’s hybrid industrial cargo ship, Canopée, departed from Bordeaux, France, transporting essential components of the Ariane 6 rocket for its first Amazon mission planned for early next year.

…Canopée’s voyage is supporting Amazon Leo’s inaugural mission on Ariane 64—an Ariane 6 variant featuring four additional boosters for maximum satellite launch capacity. The vessel will transport the rocket’s central core stage, upper stage, and other critical components on a weeks-long journey across the Atlantic to the European Spaceport in Kourou, French Guiana. Once there, the components will undergo final assembly and integration in preparation for the LE-01 mission.

Though Ariane-6 has successfully launched four times, none of those versions were this most powerful version. The plan is for it to place in orbit 32 Leo satellites, some of which Amazon has already shipped to French Guiana.

Arianespace plans six Ariane-6 launches in 2026, though it is unclear how many of these launches will be for Amazon. Amazon, which has about 154 satellites in orbit, needs to get about 1,450 more launched by July to meet its FCC license obligations. Both ULA and Blue Origin say they will be ramping up their launch pace in 2026 to meet this need, but it remains unclear if all three rocket companies can get the job done on time.

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Vast opens Japanese office

11:06 am

As part of its recent push to establish links with as many foreign governments as possible, Vast announced earlier this week the opening of a new Japanese office, to be headed by a retired Japanese astronaut.

In November Vast announced preliminary agreements with Uzbekistan, the Maldives, and Columbia. This new office in Japan continues that trend. The company is clearly marketing its demonstration single module space station Haven-1 to these international customers. None have yet committed to a flight, but expect a lot of action once Haven-1 launches in the spring and is proven operational. The company wants to fly four 30-day manned missions to the module during its three year mission, and if launched successfully these international customers are likely to sign on for flights.

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The two American launches today set a new global annual launch record exceeding 300+

10:56 pm

Liberty enlightens the world
Now liberty is enlightening the solar system!

Two American companies today successfully completed launches from opposite sides of the globe, and in doing so set a new global benchmark for rocket launches in a single year.

First, Rocket Lab placed a Japanese technology test smallsat into orbit, its Electron rocket taking off from one of its two launchpads in New Zealand. The satelliite, dubbed Raise-4, was built by Japan’s space agency JAXA and carries eight different experimental payloads from a variety of academic and industry entities, including a test of a new solar sail design.

SpaceX then followed, launching another 27 Starlink satellites, its Falcon 9 rocket lifting off from Vandenberg Space Force Base in California. The first stage completed its 9th flight, landing on a drone ship in the Pacific.

The leaders in the 2025 launch race:

165 SpaceX (a new record)
83 China
16 Rocket Lab (a new record)
15 Russia

SpaceX now leads the rest of the world in successful launches, 165 to 136.

More significantly, with these two launches the total number of successful orbital launches in 2025 has now exceeded 300, for a present total of 301. To put the spectacular nature of this number in perspective, until 2020 it was rare for the world to exceed 100 launches in a year, especially after the fall of the Soviet Union. Most often, the total each year ranged between 50 to 80 launches.

Those numbers are now history, and it has been competition and freedom that has made all the difference.
» Read more

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China launches recoverable capsule; satellite launched two days ago just misses Starlink satellite

11:03 pm

Two Chinese launch-related stories tonight. First, one of the nine satellites launched on a Kinetica-3 rocket on December 10, 2025 apparently almost collided with a Starlink satellite after deployment in orbit.

As far as we know, no coordination or deconfliction with existing satellites operating in space was performed, resulting in a 200 meter close approach between one of the deployed satellites and STARLINK-6079 (56120) at 560 km altitude.

The government-owned pseudo-company that launched the rocket, CAS Space, responded shortly thereafter.

Our team is currently in contact for more details. All CAS Space launches select their launch windows using the ground-based space awareness system to avoid collisions with known satellites/debris. This is a mandatory procedure. We will work on identifying the exact details and provide assistance as the LSP.

It is possible China did the proper due diligence but the large number of satellites in orbit as well as being launched simply makes these events increasingly likely. It is also possible CAS Space is lying, and it didn’t do a thorough analysis prior to launch. Either way, this incident should force it to do a better job in the future.

Next, China tonight (December 13, 2025 in China) continued its annual end-of-year ramp up of launches, placing the first Dear-5 recoverable capsule into orbit, its Kuaizhou-11 rocket lifting off from its Jiuquan spaceport in northwest China. This capsule is comparable to Russia’s Bion capsule, designed to be used for research in orbit for return to Earth for sale.

China’s state-run press made no mention where the rocket’s lower stages crashed inside China.

The leaders in the 2025 launch race:

164 SpaceX
83 China (a new record)
15 Rocket Lab
15 Russia

SpaceX still leads the rest of the world in successful launches, 164 to 135.

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The beginnings of a planetary nebula

9:49 am

Calabash Nebula
Click for original image.

Cool image time! The picture to the right, reduced and sharpened to post here, was taken by the Hubble Space Telescope back in 2017 but released this week by NASA’s PR department. It shows what astronomers have nicknamed the Calabash Nebula. From the Wikipedia page:

The Calabash Nebula, also known as the Rotten Egg Nebula or by its technical name OH 231.84 +4.22, is a protoplanetary nebula (PPN) 1.4 light years (13 Pm) long and located some 5,000 light years (47 Em) from Earth in the constellation Puppis. The name “Calabash Nebula” was first proposed in 1989 in an early paper on its expected nebular dynamics, based on the nebula’s appearance.[5] The Calabash is almost certainly a member of the open cluster Messier 46, as it has the same distance, radial velocity, and proper motion.[6] The central star is QX Puppis, a binary composed of a very cool Mira variable and an A-type main-sequence star.

The star in the center is an ancient red giant that is in the initial stages of dying. As it does so it periodically erupts, sending out jets of material from its poles. The result is this elongated shape. According to the release, “the gas shown in yellow is moving close to a million kilometers an hour.”

Over the next few thousand years these eruptions will shape the planetary nebula. Since the central star is actually a binary, those two stars will likely act like the blades in a mixer, adding more interesting forms to the material as it is shot out to form this nebula.

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Iraq and SpaceX close to signing Starlink deal

9:28 am

Meetings this week between SpaceX officials and the Iraqi government appear to have finalized an agreement that would allow Starlink to be marketed inside Iraq.

The meeting on Thursday concluded with discussions on “the final procedures related to granting satellite internet licenses, including the license designated for SpaceX, as well as avenues for strengthening cooperation in the telecommunications sector, the services provided by the company, and its prospective coverage areas,” the statement added.

It is not clear if the deal has been signed, or is simply written and still needs review. Based on the little information provided, it sounds as if SpaceX will be marketing its terminals directly to Iraqi citizens. I suspect however that some Iraqi government entity will demand a cut, and might even demand the right to do the marketing itself, as a number of other nations have done.

Regardless, Starlink continues to expand worldwide, and in doing so makes censorship increasingly difficult for the petty power-hungry thugs that run many of these third world nations. And when Amazon Leo begins operations, that censorship will become even more difficult.

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Avio to build $500 million rocket facility in Virginia

9:18 am

The Italian rocket company Avio has selected Virginia as the location where it will build a $500 million solid-fueled rocket facility as part of establishing its American-based division.

Italian rocket builder Avio has announced that it has selected the state of Virginia to build its planned US-based production facility. The $500 million project forms part of the company’s expansion of its defence business.

Avio founded its wholly owned US subsidiary, Avio USA, in 2022 to capitalise on a market opportunity created by constrained solid rocket motor production capacity relative to surging demand for tactical propulsion solutions. Since then, the company has signed contracts with the US Armed Forces, Raytheon, and Lockheed Martin.

Avio presently builds the Vega-C solid-fueled rocket, which until this year was managed and controlled by the European Space Agency’s (ESA) commercial division, Arianespace. That arrangement however is ending. Beginning next year, Arianespace will be out of the picture. Avio is already marketing its own rocket, as indicated above, and as part of that process the company has been expanding operations, such as creating this U.S. division.

And for Avio this situation presents a great opportunity. The only company producing solid-fueled rockets and missiles in the U.S. appears to be Northrop Grumman, and the lack of competition has made its rockets expensive. There is room for competition. Moreover, the decisions of the Biden administration to provide the Ukraine a very large percentage of the Pentagon’s missile stock means there is a big need to replenish those stocks.

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Turkey begins construction of spaceport in Somalia

9:07 am

Somalia

According to statements by one Turkish official this week, his nation has begun building its own spaceport on the southeast coast of Somalia at a location not yet specified.

Türkiye has begun construction of a space launch facility in Somalia, marking the country’s entry into an exclusive group of nations with oceanside spaceports, Board Chairman of Baykar Selcuk Bayraktar announced on Thursday. “Türkiye now has a space launch station. Normally, you need to be by the ocean. Türkiye has a 30 kilometer by 30 kilometer area in Somalia,” Bayraktar said during a panel at Take Off İstanbul 2025. “When you have oceanside access, you can deploy launch vehicles, meaning you have a spaceport. There are 12 such places in the world. Because Somalia is part of our heartland geography, there will be a space station there,” he noted.

This plan has been in the works since earlier this year, though few real details (such as its specific location) have not been released. It appears however that Turkey wants to use it to test both ballistic missiles and eventually launch orbital rockets. The location on the coast will permit test flights of bigger missiles that Turkey cannot do from its present test sites inside Turkey.

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China launches nine more Guowang internet-of-things satellites

8:56 pm

China today successfully launched another nine internet-of-things satellites for the Guowang (or SatNet) constellation, its Long March 12 rocket lifting off from its coastal Wenchang spaceport.

China’s state-run press did not reveal the number of satellites, but the previous three Long March 12 launches that carried Guowang satellites all launched nine, so I think it is safe to assume nine launched today as well. This was the sixteenth launch for this constellation, which now has about 119 satellites in orbit, with a planned 13,000 once complete.

The Long March 12 is expendable. Though the launch proceeded over the ocean, one drop zone for the rocket’s lower stages was in the Philippines, where authorities warned its citizens to avoid those zones and to exercise caution if they see any likely rocket debris.

An upgraded version, the Long March 12A, with a first stage designed to land vertically and be reused, is scheduled to launch sometime in the next two weeks.

The leaders in the 2025 launch race:

164 SpaceX
82 China (a new record)
15 Rocket Lab
15 Russia

SpaceX still leads the rest of the world in successful launches, 164 to 134.

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Scientists posit that Neptune and Uranus might be rockier than previously theorized

12:35 pm

Scientists doing new computer modeling of the known data now posit that Neptune and Uranus might not be as icy as previously believed and instead could be more like the inner terrestrial planets like Earth, much rockier in their interior.

According to the work carried by the UZH scientific team, Uranus and Neptune might actually be more rocky than icy. The new study does not claim the two blue planets to be one or the other type, water- or rock- rich, it rather challenges that ice-rich is the only possibility. This interpretation is also consistent with the discovery that the dwarf planet Pluto is rock-dominated in composition.

…With their new agnostic, and yet fully physical model, the University of Zurich team found the potential internal composition of the “ice giants” of our Solar system, is not limited at all to only ice (typically represented by water). “It is something that we first suggested nearly 15 years ago, and now we have the numerical framework to demonstrate it,” reveals Ravit Helled, a professor at the University of Zurich and initiator of the project. The new range of internal composition shows that both planets can either be water-rich or rock-rich.

This new hypothesis might also help explain the multi-polar magnetic fields of both planets.

All is uncertain of course, as this is just a computer model based on limited data. Nor is it a surprise that an alternative conclusion appears to work. We know so little about these distant worlds that it is likely that multiple theories could fit the data, and all could be wrong when we finally learn more.

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