Category: Behind The Black

April 2, 2024 Quick space links

4:35 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.

  • Head of France’s space agency visits Axiom

    • In recent weeks France has suddenly discovered the wonders of capitalism. This visit likely involves its recognition that ISS is soon going away, and that it will have to then deal with private commercial station operators.

 

 

 

 

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Patches of volcanic Martian ash covering patches of frozen volcanic dunes

11:30 am

Patches of volcanic Martian ash over frozen volcanic dunes

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on December 24, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

What makes this terrain intriguing are the series of parallel ridges that cover most of the picture, with smaller ridges at right angles filling the hollows between. It appears we are looking at two different sets of dunes, the larger ridges indicating the southeast-to-northwest direction of the prevailing winds, while the smaller ridges in the hollows suggest the wind patterns within the hollows, causing smaller ripple dunes to form at right angles.

Note however the flat patches in the lower left. The material there appears to fill the hollows, covering the dunes. We can tell this by the hollows to the east, which have an almost identical dune pattern. Those flat patches then are likely covering similar dunes, with the patched material either having been blown away to expose the lower dunes, or having been blown here to cover them in patches. That the dunes appear unchanged under this patched material when exposed also suggests strongly that these dunes are hardened into stone, no longer soft sand that can be blown by the wind.
» Read more

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Sunspot update: The weak solar maximum continues

10:38 am

NOAA yesterday posted its updated monthly graph tracking the number of sunspots on the Sun’s Earth-facing hemisphere. As I do every month, I have posted this graph below, with several additional details to provide some larger context.

The sunspot activity in March dropped, continuing the pattern of the last five months, where the Sun appears to be in a stable plateau after reaching a high peak in the summer of 2023. It continues to appear that we are in the middle low saddle of a double-peaked relatively weak solar maximum, with the Sun doing what I predicted in February:

If we are now in maximum, sunspot activity throughout the rest of 2024 should fluctuate at the level it is right now, with it suddenly rising again near the end of the year for a period lasting through the first half of 2025. After that it should begin its ramp down to solar minimum.

» Read more

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Video shows Astra rocket exploding on launchpad during early 2020 launch attempt

9:12 am

In March 2020 the rocket startup Astra was attempting to complete its first orbital test launch. After one attempt that was scrubbed, the next ended with what the company called “an anomaly” when a fire destroyed the rocket on the launchpad.

Immediately after that failure the company furloughed one fifth of its workforce, and did not succeed in getting a rocket to orbit until November 2021, after another two failures.

Video obtained by Tech Chrunch now shows what happened on that March 2020 failure. The Astra rocket simply exploded on launchpad, destroying everything.

The company has been an example of the risks of freedom and private enterprise. It appeared to be one of the big successes, getting rockets built and launched, during which it also went public. Instead, after a few launch successes it abandoned its rocket, ran out of cash, and then the stock was purchased for pennies by the company’s two founders — taking it private once again. At the moment it is not clear if the company will ever rise from the ashes.

In other words, buyer beware. The claims of any new company is not to be trusted blindly. Sometimes their claims are filled with hubris.

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De-orbiting debris from ISS hits a house in Florida

8:58 am

It appears that a 2-pound piece of a de-orbiting “cargo pallet” from ISS bored through the roof of a house in Florida on March 8, 2024 and broke through two floors.

A Nest home security camera captured the sound of the crash at 2:34 pm local time (19:34 UTC) on March 8. That’s an important piece of information because it is a close match for the time—2:29 pm EST (19:29 UTC)—that US Space Command recorded the reentry of a piece of space debris from the space station. At that time, the object was on a path over the Gulf of Mexico, heading toward southwest Florida.

This space junk consisted of depleted batteries from the ISS, attached to a cargo pallet that was originally supposed to come back to Earth in a controlled manner. But a series of delays meant this cargo pallet missed its ride back to Earth, so NASA jettisoned the batteries from the space station in 2021 to head for an unguided reentry.

NASA had taken possession of the piece to determine for certain if it is from ISS. Who is liable for the damages could become a legal tangle. The depleted batteries were owned by NASA, but were brought to ISS on a Japanese HTV cargo freighter. According to the Outer Space Treaty, the nation that launches an item is liable for any damages it causes when it crashes back on Earth. The language however doesn’t really cover a case where one nation builds the item for launch, and another nation launches it.

The owner, Alejandro Otero, had to use Twitter to get a response from NASA. According to his tweet, he had called and emailed the agency and had been ignored. Only after other news sources picked up the story did NASA respond. Furthermore, when NASA jettisoned the pallet from ISS it had insisted that the discarded batteries would burn up entirely in the atmosphere, even though other experts said differently.

The Aerospace Corporation, a federally funded research and development center, says a “general rule of thumb” is that 20 to 40 percent of the mass of a large object will reach the ground. The exact percentage depends on the design of the object, but these nickel-hydrogen batteries were made of metals with relatively high density. Ahead of the reentry, the European Space Agency also acknowledged some fragments from the battery pallet may survive to the ground.

What this information tells us is that NASA knew this discarded pallet posed a risk, but made believe it didn’t.

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SpaceX launches 22 Starlink satellites

8:27 pm

SpaceX tonight successfully placed another 22 Starlink satellites into orbit, its Falcon 9 rocket lifting off from Vandenberg in California.

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

The leaders in the 2024 space race:

33 SpaceX
13 China
5 Russia
4 Rocket Lab

American private enterprise now leads the entire world combined in successful launches 38 to 24, and SpaceX by itself remains ahead everyone one else combined 33 to 29.

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April 1, 2024 Quick space links

4:45 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.

 

 

  • US court asks India to pay $132 million to Deutsche Telekom in Devas Antrix case

    • Don’t ask me to explain this. The Devas Antrix legal case has been wandering through various international courts since 2005, and I have never been able to find a clear explanation for the court battles. What I do know is that it involves Antrix, what was then the commercial arm of India’s ISRO space agency, and a number of international companies, all of which have sued when the project was canceled.

 

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Boeing’s problems are only the tip of the iceberg

1:25 pm

Most of all beware this boy.’
As noted by the Spirit of Christmas Present in Dickens’ The Christmas
Carol, ‘This boy is ignorance, this girl is want. Beware them both,
but most of all beware this boy.’

Since the beginning of this year, following the near disaster when a door of a Boeing 737-Max airline blew off during the Alaska Airlines flight, the media has been obsessed with reporting every single subsequent Boeing airplane incident as attributed to bad management and quality control at Boeing.

The problem with this shallow reporting is that it fails entirely in recognizing the real depth of the problem.

First, in most of the incidents reported, the planes involved were not recent purchases from Boeing, but had been owned by the airlines for years, sometimes decades. Thus, any maintenance issues, such as a wheel falling off after take-off or a landing gear collapsing on landing or the sudden failure of an Airbus plane’s hydraulic system, are not Boeing’s fault, but the fault of the airline the plane belongs to. In the case of these particular incidents, that airline was United, and in every case, the failure was with its maintenance department, not Boeing’s bad management and poor quality control.

A similar string of incidents has also occurred at American Airlines, involving both Boeing and Airbus airplanes. With both United and American, evidence suggests that the quality of its maintenance staff has likely declined significantly since 2020, when both companies decided to abopt Diversity, Equity, and Inclusion (DEI) hiring practices, which made skin color and sex the most important qualification in hiring, rather than talent, skill, experience, or knowledge.

It is important for readers to recognize this fact when they see new stories about a Boeing plane forced to make an emergency landing, such as the story today about a United Airlines’ Boeing 787. It apparently had a cracked windshield, requiring an unscheduled landing in Chicago. The article at the link focuses a great deal on Boeing, but the focus should instead be on United Airlines, not the airplane maker, since it is United’s responsibility to keep its fleet flightworthy. When an airline fails to do so, future customers should take note, and consider other options when they need to fly.

In other words, you shouldn’t avoid flying on a Boeing plane, you should avoid flying on airlines that maintain their airplanes badly.

Having said this, I don’t want my readers to think I am trying to let Boeing off the hook. Far from it. » Read more

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Interacting galaxies

9:27 am

Interacting galaxies
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 as part of a dark energy survey. It shows two galaxies very close together, their perpheries only about 40,000 light years apart, with the larger galaxy about the size of the Milky Way.

For comparison, the Large Magellanic Cloud (LMC) is about 167,000 light years from the Milky Way, more than four times farther that this satellite galaxy. Yet the satellite galaxy here appears much larger than the LMC, having a central core that the LMC lacks. From the caption:

Given this, coupled with the fact that NGC 5996 is roughly comparable in size to the Milky Way, it is not surprising that NGC 5996 and NGC 5994 — apparently separated by only 40 thousand light-years or so — are interacting with one another. In fact, the interaction might be what has caused the spiral shape of NGC 5996 to distort and apparently be drawn in the direction of NGC 5994. It also prompted the formation of the very long and faint tail of stars and gas curving away from NGC 5996, up to the top right of the image. This ‘tidal tail’ is a common phenomenon that appears when galaxies get in close together, as can be seen in several Hubble images.

In this single picture we are witnessing evidence of a process that has been going on for likely many millions of years.

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Australian spaceport on sourthern coast prepares for launch

11:06 am

Australian commercial spaceports
Click for original map.

According to a report today, the first suborbital launch from a new commercial spaceport on the sourthern coast of Australia is now expected by the end of April or early May.

New launch facilities at the Koonibba Test Range, South Australia’s first permanent spaceport, are almost complete ahead of the impending inaugural launch. Located northwest of Ceduna, the range is a partnership between Southern Launch and the Koonibba Community Aboriginal Corporation. It is the largest commercial testing range in the Southern Hemisphere.

Space Industries Minister Susan Close is today visiting the site ahead of the sub-orbital test launch of German manufacturer HyImpulse’s SR75 rocket, which, subject to final regulatory approval, will go ahead at the end of April or early May. The rocket will reach an altitude of 50 kilometres before parachuting back to Earth where it will be recovered for testing.

Southern Launch, marked on the map to the right, is on south coast of Australia. Two other Australian commercial spaceports also under development are noted on the northern and eastern coasts.

We shall see if this suborbital launch occurs as planned. Recently the evidence has suggested that Australia’s regulatory state is as bad as the United Kingdom, taking forever to issue licenses for private launches.

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Russia launches Earth observation satellite

10:12 am

Russia early this morning successfully launched a new Earth observation satellite, its Soyuz-2 rocket lifting off from its Baikonus spaceport in Kazakhstan.

The side boosters, core stage, second stage, and fairings all crashed in two planned drop zones within Russia. No word if any landed near habitable areas.

The leaders in the 2024 space race:

32 SpaceX
13 China
5 Russia
4 Rocket Lab

American private enterprise still leads the entire world combined in successful launches 37 to 24, and SpaceX by itself remains ahead everyone one else combined 32 to 29.

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SpaceX completes two launches in three and a half hours; third launch scrubbed

10:50 pm

And the beat goes on: Today SpaceX set a new marker for future launch companies, successfully launching twice from two different launchpads in Florida only three and a half hours apart, and then scrubbing a third launch due to weather on the opposite coast of the U.S. only a few hours after that.

First SpaceX launched a Eutelsat geosynchronous communications satellite, its Falcon 9 rocket lifting off from Cape Canaveral at 5:52 pm (Eastern). Its first stage completed its twelth flight, landing on a drone ship in the Atlantic.

A little more than three and a half hours later, at 9:30 pm (Eastern), SpaceX launched 23 Starlink satellites, its Falcon 9 rocket lifting off from its second launchpad at Cape Canaveral. The first stage completed its eighteenth flight, landing on a drone ship in the Atlantic.

Finally, the third launch planned for the day, of another 22 Starlink satelites, was scrubbed at Vandenberg in California at about 10:30 pm (Pacific), or 1:30 am (Eastern) due to weather, despite multiple launch attempts during its two hour launch window. The flight will likely be rescheduled for sometime in the next few days.

No private company has ever attempted such a thing before, and only the Soviet Union might have done it during the height of its launch industry from 1970 to 1988, when it routinely launched between 80 and 100 times per year. Whether it ever did three launches in under nine hours however is not likely.

Even though only two of the three launches took off, what SpaceX tried to do today provides a further illustration of the company’s effort to make rocket launches as routine as airplane travel. It now launches at a pace and reliability that is unprecedented since the dawn of the space age, and was for decades considered by experts impossible. So much for experts. It always pays to ignore them when they tell you something is impossible.

The leaders in the 2024 space race:

32 SpaceX
13 China
4 Rocket Lab
4 Russia

American private enterprise now leads the entire world combined in successful launches 37 to 23, and SpaceX by itself leads everyone one else combined 32 to 28.

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Varda releases results of its in-orbit test for producing pharmaceuticals in weightlessness

9:48 pm

On March 20, 2024 Varda released the results from its seven-month-long flight of its unmanned capsule, claiming that the technology worked to produce pharmaceuticals in weightlessness that will be better at treating some difficult illnesses such as HIV.

From the abstract of the preprint paper [pdf]:

Despite notable progress in realizing the benefits of microgravity, the physical stability of therapeutics processed in space has not been sufficiently investigated. Environmental factors including vibration, acceleration, radiation, and temperature, if not addressed could impact the feasibility of in-space drug processing. The presented work demonstrates the successful recovery of the metastable Form III of ritonavir generated in orbit. The test samples and passive controls containing each of the anhydrous forms of ritonavir; Form I, Form II, Form III, and amorphous exhibit excellent stability. By providing a detailed experimental dataset centered on survivability, we pave the way for the future of in-space processing of medicines that enable the development of novel drug products on Earth and benefit long-duration human exploration initiatives.

More research is likely required, but I suspect Varda will be able to raise investment capital from this success, since there is a lot of money to be made from pharmaceuticals that can only be produced in weightlessness.

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March 29, 2024 Quick space links

3:25 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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Arizona city shuts down church program that fed the hungry for the last 25 years

2:43 pm

Nieves Riedel, mayor of San Luis, Arizona
Nieves Riedel, mayor of San Luis, Arizona, and
very hostile to churches feeding the hungry

They’re coming for you next: In 2022 a new mayor and administration arrived in San Luis, Arizona, and immediately thereafter the food program of Gethsemani Baptist Church in San Luis, Arizona, came under harassment, with repeated citations and bureaucratic demands that it limit its operations, to a point that the threatened fines (more than $4,000) and potential jail terms for its pastor forced the church stop the program, despite operating peaceably and acceptably for a quarter of a century.

After new officials took over in San Luis, the city sent a letter last fall ordering the church to stop using semi-trucks for food delivery at its property. Attempting to resolve the order, the church offered to use smaller trucks. The city denied the request and told the church it must stop the food ministry entirely. These limitations make it functionally impossible to carry out the ministry in the same way.

Since receiving the city’s letter, Pastor Jose [Castro] had to significantly cut back on the food ministry. He’s tried to continue feeding the hungry as best he can under these limitations. But this wasn’t enough for the city of San Luis and its new Mayor, Nieves Riedel. Just a few weeks ago, while Pastor Jose passed out emergency food supplies to a small group of people at the church, a city code enforcer showed up unannounced and issued him four citations. Less than a week later, when a third party parked a truck in front of the church for just five minutes, the code enforcer returned and issued Pastor Jose four more citations. Not only will Pastor Jose have to pay fines in municipal court, each future violation may result in criminal charges.

These aggressive tactics have now forced Gethsemani to pause its ministry, as the church and Pastor Jose cannot afford the heavy fines or to relocate. Because of the City and Mayor Riedel’s intimidation tactics, the church cannot feed the hungry. That means people are going hungry right now.

» Read more

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The Martian view from high on Mount Sharp

11:47 am

The Martian view of mountains
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was downloaded today from left navigation camera on the Mars rover Curiosity.

The image looks to the north from the lower foothills of Mount Sharp. The view is downhill across the floor of Gale Crater. The intermittent dotted red line that weaves between those foothills marks the approximate route that Curiosity took to climb through them to reach this point.

About 20 to 25 miles away the mountainous rim of the crater can be seen dimly. The air is filled with dust, because its is almost the peak of the dust season at Gale Crater, located just south of the Martian equator.

The overview map below provides some further context.
» Read more

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China working to save classifed lunar mission from launch failure

9:40 am

Orbital data now suggests that Chinese engineers are attempting to save a classifed lunar mission from the failure of its launch rocket to put the two satellites in their proper high orbit.

The small DRO-A and B spacecraft launched from Xichang spaceport on a Long March 2C rocket March 13. Hours later, the first acknowledgement of the mission came from Chinese state media Xinhua, which announced that the spacecraft had not been inserted accurately into their designated orbit by the rocket’s Yuanzheng-1S upper stage. “The upper stage encountered an abnormality during flight, causing the satellites to fail to accurately enter the preset orbit,” Xinhua stated. “Relevant disposal work is currently underway,” it added, citing Xichang launch center.

Data from the U.S. Space Force’s 18th Space Defense Squadron (SDS) initially showed objects associated with the launch in low Earth orbit (LEO). However, subsequent Two Line Element (TLE) data sets, a mathematical representation of a satellite’s mean orbit, from 18 SDS show an object from the launch (international designator 2024-048A) in a 525 x 132,577-kilometer, highly-elliptical, high Earth orbit. This has since been raised, with the spacecraft tracked in a 971 x 225,193-km orbit on March 26.

This indicates that at least one satellite, and perhaps both—if still attached to one another—separated from the upper stage, and that the object’s orbit has been raised.

It is very possible that further engine burns could put these satellites into lunar orbit, which would then save the mission and turn the March 13 launch failure into a success.

Why China is keeping this particular lunar mission so secret is another question, that still remains unanswered.

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Ispace, which built the lunar lander Hakuto-R1, has raised $53 million in investment capital

9:33 am

The lunar lander company Ispace, which built Hakuto-R1, the lunar lander that crashed on the Moon last year, announced yesterday that it has raised $53 million in investment capital from a sale of its publicly traded stock.

The Tokyo-based company, which went public on the Tokyo Stock Exchange nearly a year ago, announced March 28 that it completed a sale of 10.25 million shares of stock, raising approximately 8.1 billion yen ($53.5 million). The shares were sold to institutional investors outside of Japan.

Most of the funding — about 7.1 billion yen — will go towards various elements of what the company calls Mission 3, a lander being developed by its American subsidiary, ispace U.S., for Draper. That APEX 1.0 lander will fly a mission in 2026 for NASA’s Commercial Lunar Payload Services (CLPS) program, going to the far side of the moon.

Before APEX flies the company has a second Hakuto-R-type mission planned, dubbed Resilience and targeting a launch late this year.

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Head of France’s space agency blames too many subcontractors for high cost of Ariane-6

9:26 am

At a conference yesterday the head of France’s CNES space agency, Philippe Baptiste, strongly blasted the European Space Agency’s (ESA) system of distributing contracting work to many subcontractors in its partner countries for high cost of its new expendable Ariane-6, a high cost that makes it uncompetitive in today’s launch market.

While giving his remarks, the CNES boss explained that “the European space industry, which is largely French, is in danger today. Our industry is not pivoting quickly enough. We must move quickly, reduce cycles, costs, otherwise we will all die.” It should be noted that the hyperbole towards the end of that statement may be exaggerated thanks to its translation from French to English.

On Ariane 6, Baptiste stated that “today, we are too expensive, including on Ariane 6. We are missing several tens of millions of euros, which we cannot find among European subcontractors.”

As the article then notes, this is not a new problem. ESA attempted to reduce it when it agreed in 2017 to give ownership of Ariane-6 to ArianeGroup, a joint partnership of Airbus and Safran, two of Europe’s biggest aerospace companies. The idea was that ArianeGroup would be in charge, and thus less bound to give out multiple subcontracts to many different companies scattered throughout ESA’s European partners.

This apparently did not happen, and the reason is likely because Ariane-6 was still a rocket conceived by the ESA to be run by the ESA, not a private company. That government control is also the reason Ariane-6 was designed not be reusable, even though in 2017 it was very obvious that an expendable rocket would be uncompetitive in the 2020s launch market. The bureaucrats at ESA didn’t want to take chances, so they choose a conservative design.

Baptiste’s remarks today I think help explain France’s decision earlier this week to award contracts to four rocket startups. France has finally realized that its partnership in ESA has been hindering its own space industry, and is now moving to encourage its growth outside of ESA.

There is great irony here. France led the way in creating ESA, because it wanted others to help pay for its space program. Now it rejects that partnership because its partners are simply doing what is natural, demand their own piece of the action.

Regardless, this breakup is good news. It means the European government monopoly on launch services is truly ending.

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March 28, 2024 Quick space links

3:15 pm

Courtesy of BtB’s stringer Jay, who also tipped me off to the China and Japan stories immediately below. 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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Leftist students take-over building illegally and by force at Vanderbilt

2:38 pm

Leftist protesters break into Vanderbilt building
Anti-Israel protesters assault a security guard (grey jacket)
at Vanderbuilt. Click for full video.

The lawless left: Because Vanderbilt University officials canceled a vote on a student amendment to the student government constitution, on March 25, 2024 about thirty students broke into the chancellor’s office, assaulting a security guard as they did so, and occupied it about 22 hours before police forced them out.

The university canceled the amendment vote because it would require the boycott of any businesses linked with Israel, and thus would likely violate federal and state laws and would make the university “ineligible for new state contracts and could have existing contracts voided.”

Whether or not the cancellation was right, the violence of the students is typical of the spoiled-child tantrums of the left, that assume it has the right to do anything at all, including violence and trespass, if it doesn’t get what it wants.

In a statement, the Vanderbilt spokesperson said the protest was “not a peaceful one.”
» Read more

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Japan awards development agreements with four rocket startups

1:14 pm

Capitalism in space: Japan’s space agency this week awarded development agreements to four Japanese rocket startups, signaling that nation’s attempt to shift from depending on JAXA’s government-built rockets to becoming a customer of an industry of competing commercial rocket companies.

Japan Aerospace Exploration Agency (JAXA) and Interstellar signed a basic agreement in March. Space One, whose Kairos solid rocket exploded seconds after liftoff earlier this month, was also selected under the JAXA-SMASH (JAXA-Small Satellite Rush Program) initiative. Two further companies also signed basic agreements. These are Space BD and Mitsui Bussan Aerospace, which offer services aimed at the commercial utilization of space.

The agreements mean the companies will have priority for future contracts. These are designed to support private-sector entities capable of launching satellites developed under JAXA’s small satellite missions and advance the commercialization of space transportation services.

These deals are part of a new policy announced in November that includes $6.6 billion to help encourage the growth of a Japanese commercial space sector, independent of that nation’s space agency.

It remains uncertain whether JAXA will let go the purse strings and actually allow these new companies ownership of what they do. The deals as described sound like the agency is using its power to attempt to capture the companies, rather than encourage their independent growth.

We shall have to wait and see. On its face this announcement is very good news for Japan’s space industry, as it suggests that things might be changing.

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A detailed look at the international partners for China’s Moon base

1:03 pm

Link here. The article provides a nice summary of who has signed on to China’s project to build a Moon base in competition with the American Artemis project, prompted by the announcement that an astronomical association in Colombia has now signed on.

The contrast is stark between the nations that have signed the Artemis Accords to participate in the American project (36 so far) and the entities that have partnered with the Chinese. China at present only has seven partner nations (Belarus, Pakistan, Azerbaijan, Russia, Venezuela, South Africa, Egypt), only one of which, Russia, has any space capabilities. The remaining nine partners are all academic organizations of one kind or another, all of which also have little or no major space capabilities.

Essentially, these partners are mostly PR by China to make it appear it has an international team. In reality almost all of its lunar project will be done by China. China doesn’t even expect Russia to contribute that much. As the article notes, “China has regularly omitted any mention of Russia as an ILRS partner” since the Russia invaded the Ukraine in February 2022. Before then Russia’s ability to accomplish much of anything new in space had long been questionable, and since then the doubts have escalated.

Though many of the nations who have signed the Artemis Accords are as weak, the list also includes almost all the world’s major players in space, such as France, Germany, India, Japan, and Luxembourg.

Like the Cold War, the western capitalist alliance is larger and more capable, because no one really wants to join an partnership that discourages freedom and private enterprise.

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Martian waves of ridges and cracks

12:42 pm

Martian waves of ridges and cracks
Click for original image.

In preparing today’s cool image I initially planned to post an picture taken on December 26, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO), as it showed a strange series of ridges that almost resembled waves or ripples on a pond.

In digging into MRO’s context camera archive to get the larger context, however, I immediately switched to the photo on the right, cropped, reduced, and sharpened to post here. Taken on December 17, 2010, it shows a much more mysterious and striking set of geological features than the closer view of the high resolution image, with the wave-shaped ridges on its western half but another set of wave-shaped cracks on its eastern half.

Even more intriguing, the arcs for the ridges curve in the opposite direction from the arcs for the cracks. It is almost as if there were two flows moving in opposite directions, right next to each other.
» Read more

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The remnant of the supernova from 1181, as seen in multiple wavelengths

9:44 am

Supernova remnant as seen in multiple wavelengths
Click for original image.

Using a number of different telescopes and observing in many wavelengths outside the visible spectrum, astronomers have produced a new composite image of the remnant of a supernova that was detected in the year 1181 and remained visible to the naked eye for about six months.

That composite picture is to the right, cropped and reduced to post here. From the press release:

X-ray observations by ESA’s XMM-Newton (blue) show the full extent of the nebula and NASA’s Chandra X-ray Observatory (cyan) pinpoints its central source. The nebula is barely visible in optical light but shines bright in infrared light, collected by NASA’s Wide-field Infrared Space Explorer (red and pink). Interestingly, the radial structure in the image consists of heated sulfur that glows in visible light, observed with the ground-based Hiltner 2.4 m telescope at the MDM Observatory (green) in Arizona, USA, as do the stars in the background by Pan-STARRS (white) in Hawaii, USA.

Because the remnant is so dim in visible light, it has taken years of searching to locate it.

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SLIM survives its second lunar night, re-establishes contact

9:33 am

SLIM's view after surviving its 2nd night on the Moon
Click for original image.

According to Japan’s space agency JAXA, the SLIM lunar lander has successfully survived its long night on the Moon, re-establishiing contact with ground controllers yesterday.

Last night, we received a response from #SLIM, confirming that the spacecraft made it through the lunar night for the second time! Since the sun was still high and the equipment was still hot, we only took some shots of the usual scenery with the navigation camera

One of those pictures is to the right, reduced slightly to post here. It looks west across the floor of Shioli Crater, with the far rim about a thousand feet away. The picture is identical to previous images, tilted because the spacecraft landed on its side and has limited scientific capabilities, being primarily an engineering test mission.

That this engineering test has now survived two lunar nights speaks well for its design. It tells us that future Japanese lunar landers (and rovers) will have a good chance of surviving for a long time on the Moon.

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