Category: Behind The Black

Leftist lawsuit against beach closures at Boca Chica appealed to higher Texas court

10:59 am

The leftist anti-Musk activists groups have now appealed the dismissal of their lawsuit against the law allowing more frequent beach closures at Boca Chica for Starship/Superheavy launches.

The lawsuit was filed by Save the Rio Grande Valley (SaveRGV), the Sierra Club, and the Carrizo/Comecrudo Nation of Texas against Cameron County, the Texas General Land Office, Texas Land Commissioner Dawn Buckingham, and the Texas attorney general. When the case was reviewed by the lower court in Cameron county, it dismissed it entirely, saying the activist groups had no standing and had failed to show any harm from the law.

The activists then appealed to a higher court.

The Thirteenth Court of Appeals found the Plaintiffs have standing and that immunity had been waived for each Defendant. The case was remanded to the trial court to proceed on the merits, but Defendants appealed the Thirteenth Court’s ruling to the Supreme Court of Texas.

Oral arguments before the Supreme Court of Texas will occur on January 13, 2026. In the more rational world of America until two decades ago, the case would be thrown out again, since the law that initially limited these beach closures was legally revised by the state legislature.launches. Just because these leftists don’t like it doesn’t mean they and the courts have the right to cancel legal legislation.

We no longer live in that more rational American world, however. Politics now rule, and it is leftist politics that most often win, regardless of the law or rationality.

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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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Space Force creates new naming system for its satellites

9:36 am

Though this is hardly the most important story of the day, the head of the Space Force yesterday announced that the agency has now established a new naming system for its in-space satellites and weapons.

The result is a taxonomy of seven categories tied to seven mission areas. Orbital warfare systems will take their names from the Norse pantheon. Cyber warfare tools from mythological creatures. Electromagnetic warfare systems from serpents. Navigation warfare tools from sharks. Missile warning assets from sentinels. Space domain awareness systems from ghosts. And satellite communications systems from constellations.

The service is also taking care to avoid copyright issues, Saltzman said: “We had to find categories that you could use, like ghosts or constellations or things that nobody could claim ownership of.”

This naming system will allow one to immediately identify the general purpose of the satellite or payload, though of course more specific details will be classified.

The system will however also include a less informative numbering system:

Alongside the thematic nicknames, the Space Force is also adopting a new alphanumeric satellite designation scheme. Each spacecraft will receive a two-letter prefix indicating mission type followed by a number. For example, the next generation of geostationary reconnaissance satellites will carry the RG-XX designator, adding a layer of standardized classification to complement the symbolic names attached to operational systems.

It was not made clear whether this naming system will be applied to previously launched spacecraft.

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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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SpaceX launches 29 more Starlink satellites

3:08 pm

The beat goes on! SpaceX today continued its torrid launch pace, launching another 29 Starlink satellites, its Falcon 9 rocket lifting off from Cape Canaveral in Florida.

The first stage completed its 16th flight, landing on a drone ship in the Atlantic.

The leaders in the 2025 launch race:

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

SpaceX now leads the rest of the world in successful launches, 164 to 133.

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December 11, 2025 Quick space links

2:45 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.

  • Perseverance detects static electricity produced by Martian dust devils
    I didn’t post this story last week when it was first announced because the media framed it as “Lightning found on Mar!” That’s balderdash. What was actually found was that the dust moving in dust devils produces static charges that have now been detected. I should have clarified this point then. I thank Jay for getting me to correct this omission.
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Astronomers: 70% of smaller galaxies don’t have supermassive black holes at their center

2:43 pm

Astronomers reviewing data collected by the Chandra X-ray Observatory have found that 70% of smaller galaxies don’t appear to have supermassive black holes at their center.

A team of astronomers used data from over 1,600 galaxies collected in more than two decades of the Chandra mission. The researchers looked at galaxies ranging in heft from over ten times the mass of the Milky Way down to dwarf galaxies, which have stellar masses less than a few percent of that of our home galaxy. … The team has reported that only about 30% of dwarf galaxies likely contain supermassive black holes.

You can read the paper here [pdf].

This conclusion not only impacts the theories on the formation of supermassive black holes in the center of galaxies, it influences the present theories on the formation of galaxies themselves.

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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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French startup The Exploration Company now building an in-orbit servicing spacecraft

12:28 pm

The French startup The Exploration Company, which has been developing an unmanned cargo spacecraft called Nyx to supply the commercial space stations under development, has now also gotten funds from the European Space Agency (ESA) to build an in-orbit spacecraft designed to provide refueling and servicing capabilities as well.

More information here.

In a 25 November update on its progress with an ESA-funded project, the company revealed that it is also working on a spacecraft called Oura, designed to refuel satellites in orbit, thereby extending their operational lifespan.

…As part of the 25 November update, the company announced that it had been awarded a Phase B2 contract for the InSPoC-1 programme. The Phase B2 development of the project will include activities up to Technology Readiness Level 6, which represents the development of a prototype and its demonstration in a relevant environment.

Once again, this contract from ESA is radically different than its past policy of building and owning everything itself. Instead, it is hiring this French company to develop this capability, which this French company will then own and be able to sell for profits to others.

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Scientists map the outside edge of the Sun’s atmosphere

12:22 pm

The mapping of the Sun's atmosphere

Using multiple solar observatories in space, scientists have now been able to map the approximate location of the outside edge of the Sun’s atmosphere, the point “where the speed of the outward solar wind becomes faster than the speed of magnetic waves.”

The panels to the right are a sampling of that mapping, and is figure 3 of the peer-reviewed paper [pdf]. The bulk of the data (black) comes from five spacecraft observing the Sun from the L1 point a million miles from Earth. The blue line is data from Solar Orbiter, while the red line is data from the Parker Solar Probe. From the press release:

Astronomers have produced the first continuous, two-dimensional maps of the outer edge of the Sun’s atmosphere, a shifting, frothy boundary that marks where solar winds escape the Sun’s magnetic grasp. By combining the maps and close-up measurements, scientists from the Center for Astrophysics | Harvard & Smithsonian (CfA) showed that the boundary grows larger, rougher and spikier as the Sun becomes more active.

…The boundary in the Sun’s atmosphere where the solar wind’s outward speed becomes faster than the speed of magnetic waves, known as the Alfvén surface, is the “point of no return” for material that escapes the Sun and enters interplanetary space; once material travels beyond this point, it cannot travel back to the Sun. This surface is the effective “edge” of the Sun’s atmosphere, and provides scientists with an active laboratory for studying and understanding how solar activity impacts the rest of the solar system, including life and technology on and around Earth.

This new data further refines the nature of the boundary, as earlier probes had already given scientists a rough idea of its size and nature.

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Yesterday’s posts are sadly lost

12:07 pm

The outage earlier today unfortunately toasted everything I did yesterday. That also appears to include the comments people left as well.

I will attempt to recreate those posts later today and over the weekend. Sorry however about the comments. I don’t think I can recover them.

UPDATE: I think I have recreated all the posts from yesterday. I was also able to repost the lost comments from the National Academies of Science story because commenter Edward had them still and sent them to me.

If I have missed anything, please comment below.

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Pentagon decides New Glenn must fly four times before its certifies it for military launches

11:33 am

Pentagon officials yesterday announced that before it will certify Blue Origin’s New Glenn rocket for commercial military payloads, it must complete two more successful orbital launches, for a total of four flights.

Blue Origin’s New Glenn rocket will have to complete four successful orbital flights as its pathway to certification under the U.S. Space Force’s National Security Space Launch (NSSL) program, Lt. Gen. Philip Garrant said Dec. 10 at the Spacepower conference. Garrant, who leads the Space Systems Command, said Blue Origin selected the four-flight benchmark and the government agreed. “The government is supporting a four-flight certification for New Glenn,” he told reporters. The rocket has logged two successful missions so far, and Garrant said a third launch is expected “earlier in the new year than later.” If upcoming flights stay on track, he added, “I think they’re going to be in a fantastic place to become our third certified provider and compete for missions.”

If certified, Blue Origin would join SpaceX and United Launch Alliance as the Space Force’s third heavy-lift launch provider.

It is surprising that the military is requiring four successful flights from Blue Origin, but required only two from ULA’s new Vulcan rocket, and certified that even though there were problems on Vulcan’s second flight.

These extra flights should not cause a significant delay, since Blue Origin is expecting to complete a number of launches in 2026 to meet its obligations under its Amazon Leo contract

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Svetlana Zakharova – Nikiya’s Death in La Bayadère

6:01 pm

An evening pause:This website provides a quick summary of what is happening during the dance:

Nikiya’s epic “death” solo at the end of La Bayadère‘s second act is more than a test of stamina: It’s integral to the ballet’s plot. In it, Nikiya laments her doomed relationship with Prince Solor, rejoices upon receiving a basket of flowers she believes to be from him and collapses after being bitten by a snake hidden in the basket.

Hat tip Judd Clark, who adds, “The High Brahmin offers to give Nikiya the antidote to the poison if she will renounce her vow to Solor, but she chooses death rather than life without her beloved.”

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December 10, 2025 Quick space links

3:05 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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Three launches today

1:31 pm

Three launches today, two by China and one by SpaceX.

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

China then placed nine smallsats into orbit, its Kinetica-1 (or Lijian-1) rocket lifting off from its Jiuquan spaceport in northwest China. One of those satellites was for the United Arab Emirates.

In neither case did China’s press provide any information about where the rocket’s lower stages crashed.

In between these launches SpaceX launched 27 more Starlink satellites into orbit, its Falcon 9 rocket lifting off from Vandenberg in California. The first stage completed its 18th flight, landing on a drone ship in the Pacific.

The leaders in the 2025 launch race:

163 SpaceX (a new record)
81 China (a new record)
15 Rocket Lab
15 Russia

SpaceX now leads the rest of the world in successful launches, 163 to 133.

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Abstract art produced by nature within Mars’ north pole ice cap

1:17 pm

Abstract art created by nature on Mars
Click for original

Cool image time! The picture to the right, cropped, reduced, sharpened, and annotated to post here, was taken on October 27, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). I have also rotate the image so that north is to the top.

The science team labels this “Exposure of North Polar Layered Deposits,” an apt description of the horizontal red and grey and blue layers that dominate the image and make this geology look more like an abstract painting than a natural landscape. What we are actually looking at is a canyon 800-to-1,200 feet deep within the north polar ice cap of Mars.

The picture was taken in the summer with the Sun about 12 degrees above the horizon to the south. Thus, the northern cliff face is illuminated, revealing its many colored layers, while the south face is mostly in shadow, hiding those layers.
» Read more

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Chinese astronauts complete spacewalk inspecting damaged Shenzhou capsule

12:53 pm

Two Chinese astronauts yesterday completed their first spacewalk since arriving on China’s Tiangong-3 space station, during which they inspected the damaged viewport on the Shenzhou-20 capsule as well as installed a cover to protective that damage when the capsule returns to Earth.

Shenzhou-21 mission commander Zhang Lu and rookie crewmate Wu Fei began an extravehicular activity (EVA) at 9:28 p.m. Eastern, Dec. 8 (0228 UTC, Dec. 9), when Zhang opened the Wentian experiment module airlock hatch and exited the Tiangong space station.

The more than eight-hour EVA concluded at 5:42 a.m. Eastern (1042 UTC) Dec. 9, with the pair safely back inside Tiangong. Zhang and Wu, wearing Feitian EVA suits with red and blue markings respectively, were assisted by the space station’s robotic arm, crewmate Zhang Hongzhang from inside Tiangong, and teams in mission control. New, upgraded Feitian suits were delivered to Tiangong via the July Tianzhou-9 cargo mission.

The first series of tasks centered on the Shenzhou-20 spacecraft, the return module of which suffered a suspected debris impact to a viewport window, rendering the spacecraft unsafe to return its three-astronaut crew to Earth in early November. At around 12:19 a.m. Eastern, Zhang Lu approached the viewport window of the Shenzhou-20 return module while attached to the Tiandong robotic arm and photographed and assessed the damage.

China has said that the damage was caused by a millimeter-sized object that impacted at high speed. It has yet however to release any images of the damage, and provided no other details.

Thus, we still do not know the damage’s exact nature, other than what that state-run press has told us. It could very well be that this damage was caused by some other factor that China does not wish to reveal.

NOTE: This is a recreation of a post published on December 10, 2025 that was lost during this morning’s server outage.

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Unconfirmed anonymous sources at Reuters and Bloomberg claim SpaceX is planning a public stock offering

12:46 pm

Two stories from Reuters and Bloomberg yesterday suggest Elon Musk is considering making SpaceX a publicly traded company, with an initial stock offering sometime in 2026. From the Reuters’ report:

Elon Musk’s SpaceX is looking to raise more than $25 billion through an initial public offering in 2026, a move that could boost the rocket-maker’s valuation to over $1 trillion, a person familiar with the matter told Reuters on Tuesday. The company’s move towards a public listing, which could rank among the largest global IPOs, has been largely driven by the rapid expansion of its Starlink satellite internet business, including plans for direct-to-mobile service and progress in its Starship rocket program for moon and Mars missions.

SpaceX has started discussions with banks about launching the offering around June or July, the person said, requesting anonymity to discuss confidential information.

Since both stories rely entirely on anonymous sources, we should not take either very seriously. I only post this now merely to put it on the record. And though Elon Musk has since hinted there might be some truth to both, he has also been very vague about his plans. While a public offering would garner him a lot of cash, it would bring with it a lot of regulatory headaches that would seriously interfere with what he wants to do. In the end I think (and hope) he will decide it ain’t worth it. Starlink right now is bringing in enough money to allow him to accomplish everything, and more.

If anything, these stories illustrate again the corruption in our modern propaganda press. Such stories would have been considered junk four decades ago. Then it was traditional practice that a story needed at least two independent sources, one of which was not anonymous. No longer. Anyone can push any lie, and these news outlets will publicize it, for the sake of clicks.

NOTE: This is a recreation of a post published on December 10, 2025 that was lost during this morning’s server outage.

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Engineers lose contact with Mars orbiter Maven

8:48 am

NASA announced late yesterday that the engineering team running the Maven Mars orbiter lost contact with the spacecraft on December 6, 2025, and are still trying to figure out what happened and regain communications.

NASA’s MAVEN (Mars Atmosphere and Volatile EvolutioN) spacecraft, in orbit around Mars, experienced a loss of signal with ground stations on Earth on Dec. 6. Telemetry from MAVEN had showed all subsystems working normally before it orbited behind the Red Planet. After the spacecraft emerged from behind Mars, NASA’s Deep Space Network did not observe a signal.

The spacecraft and operations teams are investigating the anomaly to address the situation. More information will be shared once it becomes available.

No other information was released.

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December 9, 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.

2 comments

SpaceX completes its 11th launch this year for the National Reconnaissance Office

1:46 pm

SpaceX today successfully placed its 11th payload into orbit this year for the National Reconnaissance Office, its Falcon 9 rocket lifting off from Cape Canaveral in Florida.

The first stage completed its fourth flight, landing back at Cape Canaveral. The rocket’s two fairings were both new, flying their first mission.

The leaders in the 2025 launch race:

162 SpaceX (a new record)
79 China
15 Rocket Lab
15 Russia

SpaceX now leads the rest of the world in successful launches, 162 to 131.

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Academia makes its first comprehensive attempt to plan science missions to Mars using Starship

1:28 pm

Figure 2-2 from the NAS report
Figure 2-2 from the National Academies
of Science report

A new report released today by the National Academies of Science, entitled “Highest Priority Science for the First Human Missions to Mars,” is essentially the first attempt by the planetary science community to plan its future science missions to Mars using the gigantic capabilities that SpaceX’s Starship is expected to provide them.

You can download the report here.

Even though the report made the search for life on Mars its big priority — a bugaboo that NASA and the science community trots out repeatedly to garner clicks from the ignorant propaganda press — this report is radically different then all previous similar NASA studies proposing future Mars exploration, as indicated by the graphics from figure 2-2 of the report to the right. Unlike those past studies, which were badly limited by the inadequate capabilities of any spacecraft NASA could send to Mars, this new report recognizes how much the game is changed by SpaceX’s Starship.

First, the new panel did not attempt to place any limit on any landing zones. Earlier reports had forbidden landings in the high latitudes or high altitudes because of the risks to NASA’s proposed landers. Starship overcomes much of those risks, giving researchers much greater flexibility.

Second, the focus of the missions will not be solely devoted to scientific or geological research, as had been the case for all previous similar reports by NASA and the academic community. Instead, the proposed research goals includes important engineering and human exploration requirements outside of science, including efforts to use the resources on Mars itself as well as find locations better suited for human habitation. Once again, the vastly greater capabilities of Starship influenced this change.

Even more important, the study doesn’t assume the future missions will be unmanned, as all previous NASA reports have done. In fact, it does the opposite, proposing multiple 30-day manned missions, as shown in the graphic. One set of three missions would go to three different locations, while another set of three missions would focus on one place in particular.

Much of this shift towards manned flight I think stemmed from the presence on the panel of representatives from the private companies SpaceX and The Exploration Company (a French startup), as well as an engineer from the National Academy of Engineering. Previously studies were almost always entirely dominated by planetary scientists, so the goals outlined were always focused on their interests. Now the idea of human exploration has become prevalent.

The panel’s work was clearly also influenced by the realization that SpaceX’s Starship is not only far more capable, its first flights are just around the corner. SpaceX plans sending it numerous times to Mars in the very near future, as shown in the graphic below that Elon Musk released during a presentation in May 2025.
» Read more

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New data detects potassium and chlorine in Cassiopeia supernova remnant

11:30 am

The Cassiopeia supernova remnant
Click for original.

Using the Japanese orbiting XRISM space telescope, astronomers have now detected evidence of both potassium and chlorine in the ancient Cassiopeia supernova remnant.

The picture to the right, reduced to post here, shows the evidence for potassium in the remnant, overlaid onto an image of Cassiopeia produced by combining data from X-ray data from Chandra, infrared data from Webb, and optical data from Hubble. The green grid boxes indicate strong evidence of potassium, while the yellow grid boxes indicate weaker evidence.

The roughly circular Cas A supernova remnant spans about 10 light-years, is over 340 years old, and has a superdense neutron star at its center — the remains of the original star’s core. Scientists using NASA’s Chandra X-ray Observatory had previously identified signatures of iron, silicon, sulfur, and other elements within Cas A.

In the hunt for other elements, the team used the Resolve instrument aboard XRISM to look at the remnant twice in December 2023. The researchers were able to pick out the signatures for chlorine and potassium, determining that the remnant contains ratios much higher than expected. Resolve also detected a possible indication of phosphorous, which was previously discovered in Cas A by infrared missions.

The orientation and position of these grid boxes on the face of the expanding supernova remnant suggest the original star and explosion might have formed unevenly.

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Nova explosions appear to have multiple slow and fast explosive outflows

10:46 am

Nova
Click for original.

According to new observations of two different recent nova events have shown that the star’s eruption is complex, with multiple outflows moving at both fast and slow speeds.

The graphic and images to the right come from figure 1 of the paper, and show the evolution of one of these novae, Nova V1674 Herculis. The initial slow flow along the star’s equator, indicated at the top, acts to force the later fast flow to move out along the star’s poles, as shown at the bottom. From the paper’s abstract:

The images of the very fast 2021 nova V1674 Her, taken just 2–3 days after discovery, reveal the presence of two perpendicular outflows. The interaction between these outflows probably drives the observed γ-ray emission. Conversely, the images of the very slow 2021 nova V1405 Cas suggest that the bulk of the accreted envelope was ejected more than 50 days after the eruption began, as the nova slowly rose to its visible peak, during which the envelope engulfed the system in a common-envelope phase. These images offer direct observational evidence that the mechanisms driving mass ejection from the surfaces of accreting white dwarfs are not as simple as previously thought, revealing multiple outflows and delayed ejections.

Novae are stellar explosions of a much smaller scale than supernovae, and occur when a white dwarf star gathers enough material on its surface stolen from a binary star companion for that material to go critical. Because the stars are binaries, with some systems this process is periodic.

That these better observations, including good high resolution visuals, reveal the explosions are more complicated than “previously thought” should not be a surprise to anyone. In fact, to even suggest that anyone expected the process to be simply is absurd. Whenever we get a better view we discover new details that increase the complexity of any phenomenon.

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A new study blasts the European Union’s proposed space act

9:28 am

The European Union
This label would be more accurate if it read
“NOT made in the European Union”

A new study [pdf] just published by the generally leftist Progressive Policy Institute (PPI) has concluded that the proposed European Union’s space act would do great harm to both the European and American space industries if passed and should be reconsidered.

The economic analysis relied on the European Commission’s own estimates of increased compliance costs. The commission projected that the act would increase the cost of manufacturing a satellite in Europe by 2% and a launch vehicle by 1%. The study assumed companies would pass those costs on to customers through average price increases of 2.7%. Depending on price elasticity in each market segment, that could reduce demand by 1% to 13.6%. The resulting loss to European companies would be 245 million euros ($285 million) in annual revenue and 100 million euros in profits, the study concluded.

U.S. companies exporting to the EU would also be affected. The study estimates that American firms would lose 85 million euros in annual revenue and 7 million euros in profits from reduced European sales.

Officials from PPI are further quoted as opposed to the act as presently written, calling for a complete rewrite before passage. As PPI is a decidedly partisan leftwing think tank, formed initially by the Democratic Party in 1989, this clear public opposition to this decidedly leftwing top-down law suggests support for the bill is truly waning.

The bill itself won’t be voted on until the summer of 2026, and even if approved would not begin going into effect until 2027. Considering the opposition from the U.S. and other member nations of the European Union and the European Space Agency, it would demonstrate the EU’s utter disregard for its claimed democratic principles if it were to go ahead and ratify it as presently written. And that remains a possibility.

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