Author: Robert Zimmerman

A galactic ball and spiral interact

9:55 am

A galactic ball and spiral interact
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken by the Hubble Space Telescope as part of a study of the star populations in these two interacting galaxies. From the caption:

Arp 105 is a dazzling ongoing merger between an elliptical galaxy and a spiral galaxy drawn together by gravity, characterized by a long, drawn out tidal tail of stars and gas more than 362,000 light-years long. The immense tail, which extends beyond this image from NASA’s Hubble Space Telescope, was pulled from the two galaxies by their gravitational interactions and is embedded with star clusters and dwarf galaxies.

The three blue objects on the outskirts of both galaxies are thought to be active star-forming regions. Whether all three are part of this collision is unclear, as the object on the lower right might simply be a foreground object based on the available data.

What makes this galactic pair so intriguing is that the two galaxies are so different with very different theorized histories. Elliptical galaxies (“the ball”) are thought to be very old, the result of the long term evolution of spirals. You would therefore not think an elliptical would normally interact with a spiral, as their ages are likely so dissimilar.

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Anonymous sources: Starship will need a major rebuild after two consecutive failures

9:38 am

Starship just before loss of signal
Starship just before loss of signal on March 6, 2025

According to information at this tweet from anonymous sources, parts of Starship will likely require a major redesign due to the spacecraft’s break-up shortly after stage separation on its last two test flights.

These are the key take-aways, most of which focus on the redesign of the first version of Starship (V1) to create the V2 that flew unsuccessfully on those flights:

  • Hot separation also aggravates the situation in the compartment.
  • Not related to the flames from the Super Heavy during the booster turn.
  • This is a fundamental miscalculation in the design of the Starship V2 and the engine section.
  • The fuel lines, wiring for the engines and the power unit will be urgently redone.
  • The fate of S35 and S36 is still unclear. Either revision or scrap.
  • For the next ships, some processes may be paused in production until a decision on the design is made.
  • The team was rushed with fixes for S34, hence the nervous start. There was no need to rush.
  • The fixes will take much longer than 4-6 weeks.
  • Comprehensive ground testing with long-term fire tests is needed. [emphasis mine]

It must be emphasized that this information comes from leaks from anonymous sources, and could be significantly incorrect. It does however fit the circumstances, and suggests that the next test flight will not occur in April but will be delayed for an unknown period beyond.

I think the tweet however is much too pessimistic. If the problems are all within the fuel lines, engine wiring, and the power unit, they are well localized. Moreover, the design of these components on version 1 of Starship apparently worked reasonably well, which gives them a good basis for that redesign. Nonetheless, if these facts are correct, my guess is the next test flight won’t occur before June.

The one saving grace is that FAA red tape is clearly no longer an additional obstacle. It is very clear now that with the change from Biden to Trump it is letting SpaceX lead all investigations, and immediately accepting its conclusions and fixes, rather than sitting on those conclusions as it retyped them for weeks or months in its own report.

Hat tip to reader Richard M.

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After a decade of development, ESA finally starts testing a part of its Callisto grasshopper

9:12 am

Callisto's basic design
Callisto’s basic design

My heart be still! First proposed in 2015 as Europe’s answer to SpaceX’s Falcon 9, the European Space Agency, in partnership with Japan, has finally begun acoustical testing of just one part of its Callisto grasshopper-type reusable test prototype, as shown on the right.

Callisto consists of five main sections: the Aft Bay, which includes the engine and landing legs, the LH2 Tank, the LOx Tank, the VEB, and the Fairing. The VEB houses much of the demonstrator’s electronics, including its onboard computer, avionics, and a reaction control system that uses H2O2 propellant. Its distinctive features include a pair of control fins.

In addition to confirming that the VEB had been transported to the CNES facilities in Toulouse, the 4 March Institute of Space Systems update also revealed that the acoustic test campaign for the key Callisto module had commenced last week. The acoustic test campaign simulates the intense sound vibrations the demonstrator will experience during flight to ensure structural integrity and component reliability.

The whole project has a budget of $100 million. The first test hop won’t occur until 2026, eleven years after the project began, and six years behind its original launch date. In that same time, SpaceX has completed several hundred commercial landings of its Falcon 9 first stage, reusing those stages up to two dozen times.

Nor is Callisto part of any program to develop a similar reusable rocket. It is a typical dead-end government project, with ESA having no clear goal to apply it commercially. The best Europe can hope for is that the engineering lessons from its tests will be given freely to the new European commercial rocket startups, so that they can use it someday.

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China launches classified communications test satellite

8:58 am

China yesterday successfully launched a classified communications satellite “to carry out multi-band and high-speed communication technology validation, its Long March 3B rocket lifting off from its Xichang spacesport in southwest China.

All we really know about this satellite is that it is part of series. Nor did China reveal where the core stage and four strap-on boosters of the rocket, which use very toxic hypergolic fuels, crashed inside China.

The leaders in the 2025 launch race:

26 SpaceX
10 China
3 Russia
2 Rocket Lab

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Space Force’s X-37B completes seventh flight, lasting 434 days

8:22 am

With landing on March 7, 2025 at Vandenberg in California, of one of the Space Force’s two X-37B reusable mini-shuttles, the military completed the seventh total flight, this one lasting over 434 days.

The mission achieved a number of important milestones. First, it was the first launched on SpaceX’s Falcon Heavy rocket. Previously launches had used both ULA’s Atlas-5 as well as SpaceX’s Falcon 9.

Second, the spacecraft successfully demonstrated its ability to use aerobraking to adjust its orbit.

The Space Force also claimed other classified experiments on board “tested space domain awareness technology experiments that aim to improve the United States Space Force’s knowledge of the space environment.” That’s however all they told us.

Because the Space Force has stopped telling us which of the two X-37B’s is flying on each launch, it is not clear the Space Force even has a fleet of two any longer. It could be one has been retired.

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Ballinator – History & Lore of 32nd of an Inch Bolts

6:01 pm

An evening pause: Some engineering history for the weekend. I know the title makes this sound boring, but it is worth watching, because it illustrates the incredible complexity of some of what we think are the simplest tools. I wonder if the engineers in the space business are thinking about these issues.

Hat tip Mike Nelson.

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March 7, 2025 Quick space links

3:56 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.

  • NASA and the press team up to lobby against possible significant cuts to the agency’s science budget
    I have been following NASA science work for decades, and though much of it is extremely worthwhile, much of it is also fat that could be trimmed, most especially centers and programs that have been shown to fudge climate numbers to fit the theory of human-caused global warming (I’m most specifically looking at the Goddard Institute for Space Studies in New York). These should be shut down as fast as possible.
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Intuitive Machines confirms Athena fell over at landing; ends mission

1:33 pm

Athena on its side on the Moon

Artist rendering of lander on Moon

Intuitive Machines today officially ended its Athena lunar lander mission after it released a picture taken from the top of the lander showing clearly that it had fallen over on its side after landing.

That picture, cropped, reduced, and brightened to post here, is to the right. You can clearly see two of the landing legs in the air, with the horizon in the background.

“With the direction of the sun, the orientation of the solar panels, and extreme cold temperatures in the crater, Intuitive Machines does not expect Athena to recharge,” the company stated. “The mission has concluded and teams are continuing to assess the data collected throughout the mission.”

This is the second Intuitive Machines lunar lander to tip over. More and more it does appear that the tall design of this lander is fundamentally flawed. The artist rendering to the right illustrates this. Most unmanned lunar landers are much wider than they are tall. Intuitive Machines’ Nova design has the lander’s height matching the spread of its legs. It creates a center of gravity high enough that the lander will tip over too easily if conditions are not perfect.

The company denies this, saying the center of gravity is much lower than this graphic makes it appear, but the proof is in the pudding. Their design has tried to land on the Moon twice, and both times the lander tipped over.

It is not clear what the company can do to fix this. Expanding its diameter to lower its height is a major redesign. It also might make the lander too wide to fit inside most rocket fairings. A better solution might be to redesign the legs, making their spread wider, and even increasing their number.

Fortunately, NASA’s shift to capitalism in space has produced a number of different companies building lunar landers. Firefly’s Blue Ghost is clearly a success. In June Ispace will make its second attempt to soft land its private lander design on the Moon. And Astrobotic has a contract to try again after it had a fuel line leak after launch last year that prevented it from even attempting a landing.

And of course, Intuitive Machines is still in the game. It has a contract for one more landing mission, plus a mission to put two data relay satellites in lunar orbit.

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India’s Vikram lunar lander: Data suggests there could be more water impregnated in more places on the Moon

12:16 pm

According to scientists analyzing the data sent back from India’s Vikram lunar lander, it appears that water could be impregnated in the upper lunar soil in more places than previously predicted.

You can read their paper here [pdf]. One instrument on the lander measured the temperature of the soil down about four inches, and found the temperature to be 25 degrees Celsius warmer than expected. That location was on a sunward-facing slope, so it was expected to be warmer but not by that amount. From the paper’s abstract:

This demonstrates that local topography at metre scales can alter temperature at high latitudes, unlike equatorial regions. Numerical model calculations using ChaSTE measurements, suggest that larger poleward facing slopes(>14°) at high latitudes can harbour water-ice, making them promising and technically less challenging sites for future lunar exploration and habitation.

In other words, slopes that get much less sunlight near the poles but are not permanently shadowed could still be cold enough only a few inches below the surface to harbor water molecules.

Sounds good, but I am beginning to sense a bit of blarney in these stories, over-pushing the possible existence of water to encourage more government space funding. It might be true that there is more water molecules in more places than predicted, but rarely do these reports say how much, which I expect will be very very little, in the parts per billion range. Nor do these stories ever consider the processing necessary to extract that water. Based on other data obtained from the Shadowcam instrument on South Korea’s Danuri lunar orbiter, it increasingly seems to me that any water found in polar regions of the Moon could be very slight, or even if in large amounts much more difficult to access than anyone ever mentions.

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Once again the leftist propaganda press takes out its knives to stab SpaceX and Musk

11:18 am

Superheavy captured safely by the chopsticks, for the third time in four attempts
Superheavy captured safely yesterday by the chopsticks,
for the third time in four attempts

As should be expected, the destruction of Starship yesterday just before it made orbit on its eighth test flight was immediately used by partisan leftist media outlets to play “Let’s beat up on SpaceX and Elon Musk because he’s a friend of Trump!”

All these outlets decided to emphasize the falling debris and disruption to air traffic, but in doing so they all spun the story in a very dishonest way. First, both SpaceX and the FAA had been prepared for this possibility, and had used well-established procedures — in league with all other involved nations — to respond to the launch failure. The air space was cleared for only about fifteen minutes, as only this Florida Today article noted. Take-off delays at affected airports ranged from minutes to almost an hour, but hardly much different that normal delays seen every day.

Most important, no one was hurt, no planes were damaged, and there were no negative consequences. If anything, yesterday’s Starship flight illustrated the competence shown by SpaceX as it runs a very ambitious and radical development program of the most powerful rocket ever built. For example, why so little mention of the successful catch of Superheavy, something SpaceX has been able to do three times in the first four test flights? That achievement is truly mind-blowing.

The obviousness of these attacks is truly getting tedious. Moreover, why the hostility to one of the most spectacular efforts by an American company? Shouldn’t the American news outlets above be enthused by this effort? Have they become so hateful of their own country in all things, they want it to fail, always?

Sadly, I think we know the answer to that last question. The leftist indoctrination effort that now dominates almost all of America’s universities has produced a generation that does hate America, because they literally know nothing of its history except the distorted lies put forth by these Marxist colleges. They would rather destroy success than have America succeed.

It is both tragic and shameful, and a perfect example of someone cutting off their own nose to spite their face.

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French official lauds Ariane 6 launch; demands Europe have its own launch capability

10:08 am

Philippe Baptiste, France’s Minister for Higher Education and Research, yesterday loudly touted the second successful launch of Ariane 6 rocket, even though it occurred years late and costs far more than any other rocket on the market today.

Baptiste did so even as he insisted the Europe must continue to have its own launch capability so that it need not depend on rockets from other countries.

Europe must have sovereignty in space and “not yield to the temptation of preferring SpaceX or another competitor that may seem trendier, more reliable, or cheaper,” Baptiste [said]. “This first commercial launch of Ariane 6 is not just a technical and one-off success. It marks a new milestone, essential in the choice of European space independence and sovereignty. In the labyrinth of the global space race, Ariane 6 is the guiding thread of our strategic autonomy for the years to come.

“We must also collectively advance, as Europeans, on the governance of Europe’s space ambitions. We must ask ourselves all the questions, without taboos. For Europe in space, I am convinced that the European Union must fully assume its role as the political leader in this matter. The challenges are immense, no one knows this better than we do.”

Note Baptiste’s focus on having the European Union (EU) run things, with a focus on Ariane-6, despite its high cost. He was previously head of France’s space agency CNES, which for years has used the EU and the European Space Agency’s (ESA) partners help pay for France’s space program by requiring that all rocket launches be run by ESA’s commercial division, Arianespace.

That situation is now changing, with other ESA nations (Germany, Italy, Spain, and the United Kingdom) all breaking free from Arianespace and instead encouraging the development of competing private rocket startups independent of ESA or Arianespace. Moreover, these ESA partners have aggressive reduced Arianespace’s areas of control. It no longer runs the French Guiana spaceport. Its management of the Vega-C rocket has been transferred back to the Italian company Avio, which builds it. All it now has is Ariane-6, which has limited value because it is so expensive.

So while Baptiste desire for European autonomy matches the efforts of these European countries, his apparent desire to keep all control within the continent’s centralized government authority has been rejected. Europe has a chance to compete, but only because it is freeing its rocket startups from government control.

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