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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Spherex completes first infrared map of the sky

11:02 am

Spherex's first infrared map
Click for original image.

Astronomers have now released the first all-sky map produced by the new infrared space telescoe Spherex, launched in March.

The map to the right covers only some of the infrared wavelengths mapped, with the stars indicated by blue, green, and white, hot hydrogen gas by blue, and cosmic dust by red. Other false color maps map the universe’s galaxies, star forming regions, and numerous other heavenly phenomenon. From the press release:

Circling Earth about 14½ times a day, SPHEREx (which stands for Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer) travels from north to south, passing over the poles. Each day it takes about 3,600 images along one circular strip of the sky, and as the days pass and the planet moves around the Sun, SPHEREx’s field of view shifts as well. After six months, the observatory has looked out into space in every direction, capturing the entire sky in 360 degrees.

Managed by NASA’s Jet Propulsion Laboratory in Southern California, the mission began mapping the sky in May and completed its first all-sky mosaic in December. It will complete three additional all-sky scans during its two-year primary mission, and merging those maps together will increase the sensitivity of the measurements.

Spherex has a greater resolution across more infrared wavelengths than the previous wide-field infrared space telescope, WIRE. Its wide-field view also differs from Webb, which has a very small field of view to get high resolution infrared images of specific objects.

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Genesis cover

On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.

The print edition can be purchased at Amazon or any other book seller. If you want an autographed copy the price is $60 for the hardback and $45 for the paperback, plus $8 shipping for each. Go here for purchasing details. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.


The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
 

"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News

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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Scientists think they have detected a collision in the debris disk surrounding the star Fomalhaut

9:24 am

Fomalhaut asteroid collision
Click for original.

Using the Hubble Space Telescope, astronomers have detected a bright object in the debris disk that surrounds the nearby star Fomalhaut that wasn’t there previously, suggesting it is a glowing cloud of material left over from the collision of two asteroids.

You can read the published paper here [pdf]. Fomalhaut is a young star about 25 light years away, and has one of the best-mapped debris disks known.

The image to the right, reduced to post here, shows this new object, labeled CS2 and detected in 2023. CS1 is a similar detection from 2012 that was initially thought to be an exoplanet. When CS1 faded over time that theory was dismissed, replaced instead with the hypothesis that it was a cloud produced by an asteroid collision.

The recent appearance of CS2 strengthens this hypothesis, which will be further confirmed by future observations that show CS2 fading in the same manner. It also provides scientists a chance to measure the rate of such collisions within Fomalhaut’s debris disk, which scientists believe is essentially a baby solar system in formation. While very uncertain due to the short time scale, this data will help them begin to figure out the rate in which planets will form in such a disk.

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Conscious Choice cover

Now available in hardback and paperback as well as ebook!

From the press release: In this ground-breaking new history of early America, historian Robert Zimmerman not only exposes the lie behind The New York Times 1619 Project that falsely claims slavery is central to the history of the United States, he also provides profound lessons about the nature of human societies, lessons important for Americans today as well as for all future settlers on Mars and elsewhere in space.

 
Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space, is a riveting page-turning story that documents how slavery slowly became pervasive in the southern British colonies of North America, colonies founded by a people and culture that not only did not allow slavery but in every way were hostile to the practice.  
Conscious Choice does more however. In telling the tragic history of the Virginia colony and the rise of slavery there, Zimmerman lays out the proper path for creating healthy societies in places like the Moon and Mars.

 

“Zimmerman’s ground-breaking history provides every future generation the basic framework for establishing new societies on other worlds. We would be wise to heed what he says.” —Robert Zubrin, founder of the Mars Society.

 

All editions are available at Amazon, Barnes & Noble, and all book vendors, with the ebook priced at $5.99 before discount. All editions can also be purchased direct from the ebook publisher, ebookit, in which case you don't support the big tech companies and the author gets a bigger cut much sooner.

 

Autographed printed copies are also available at discount directly from the author (hardback $29.95; paperback $14.95; Shipping cost for either: $6.00). Just send an email to zimmerman @ nasw dot org.

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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Celtic Woman – Hark! The Herald Angels Sing

6:01 pm

An evening pause: Performed live 2013. I know this song is a bit over-played this time of year, but this performance brings a freshness to it well worth experiencing. And it is about what Christmas actually celebrates.

Hat tip Judd Clark.

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Leaving Earth cover

Leaving Earth: Space Stations, Rival Superpowers, and the Quest for Interplanetary Travel, can be purchased as an ebook everywhere for only $3.99 (before discount) at amazon, Barnes & Noble, all ebook vendors, or direct from my ebook publisher, ebookit.

If you buy it from ebookit you don't support the big oppressive tech companies and I get a bigger cut much sooner.

 

Winner of the 2003 Eugene M. Emme Award of the American Astronautical Society.

 
"Leaving Earth is one of the best and certainly the most comprehensive summary of our drive into space that I have ever read. It will be invaluable to future scholars because it will tell them how the next chapter of human history opened." -- Arthur C. Clarke

New Trump executive order today guarantees major changes coming to NASA’s Moon program

4:51 pm

Change is coming to Artemis!
Change is coming to Artemis!

The White House today released a new executive order that has the typically grand title these type of orders usually have: “Ensuring American Space Superiority”. That it was released one day after Jared Isaacman was confirmed as NASA administrator by the Senate was no accident, as this executive order demands a lot of action by him, with a clear focus on reshaping and better structuring the entire manned exploration program of the space agency.

The order begins about outlining some basic goals. It demands that the U.S. return to the Moon by 2028, establish the “initial elements” a base there by 2030, and do so by “enhancing sustainability and cost-effectiveness of launch and exploration architectures, including enabling commercial launch services and prioritizing lunar exploration.” It also demands this commercial civilian exploration occur in the context of American security concerns.

Above all, the order demands that these goals focus on “growing a vibrant commercial space economy through the power of American free enterprise,” in order to attract “at least $50 billion of additional investment in American space markets by 2028, and increasing launch and reentry cadence through new and upgraded facilities, improved efficiency, and policy reforms.”

To achieve these goals, the order then outlines a number of actions required by the NASA administrator, the secretaries of Commerce, War, and State, as well as the Director of the Office of Management and Budget (OMB) and the Assistant to the President for Domestic Policy (APDP), all coordinated by the assistant to the President for Science and Technology (APST).

All of this is unsurprising. Much of it is not much different than the basic general space goals that every administration has touted for decades. Among this generality however was one very specific item, a demand to complete within 90 days the following review:
» Read more

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December 18, 2025 Quick space links

2:55 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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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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Kenya to build its own spaceport

9:04 am

Kenya spaceports
Kenya spaceports

The Kenyan government has now initiated a project to establish a second commercial spaceport on the country’s coast, located near the town of Kipini.

As stated in the document made public on December 16, 2025, the government is looking to recruit a skilled transaction advisor who is capable of analyzing the technical, financial, legal, environmental, and social feasibility of the construction of the spaceport based on a PPP model. The strategy utilizes Kenya’s location on the equator, which provides some benefits in satellite launches, among them lower fuel consumption, lower launch costs, and easier satellite placement in low-inclined orbits around the earth’s equatorial region.

…Under the plan, the transaction advisor will prepare a detailed feasibility study in line with the PPP Act, 2021. The study will include concept designs, launch vehicle options, infrastructure requirements, lifecycle cost estimates, and a phased implementation plan for the facility.

As shown on the map to the right, this new facility would be to the north of the San Marco offshore platform that had been used for eight launches by Italy from the ’60s to the ’80s and that the Italian rocket company Avio is now planning to re-open.

The Kenyan government apparently wants to build its own a launch site that it can offer to others to use.

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