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Northwestern University joins Giant Magellan Telescope consortium

10:14 am

In what might be a signal as to the future of the two competing giant telescopes being built in the United States, Northwestern University has now chosen to join the consortium building the Giant Magellan Telescope (GMT) in Chile.

The university could have instead joined the consortium building the Thirty Meter Telescope (TMT) in Hawaii. That project however has been stalled for almost a decade due to opposition by DEI protesters who claim its construction would be a desecration to Mauna Kea, the mountain where it is being built.

At the moment both telescopes are lobbying the National Science Foundation (NSF) for the additional funds needed for completion. The NSF however can’t fund both, and either has to chose one or the other, or get Congress to give it more money. Right now it has been lobbying for more money, even though it has recognized that GMT is farther along and is in better shape. This decision by Northwestern might be telling us that university officials don’t expect that additional NSF funding to come through, and thus it is putting its money on the project most likely to get finished.

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Ispace awarded $5.83 million loan from Japanese government

10:01 am

Ispace landing map

The planetary lander startup Ispace today announced that it has been awarded a $5.83 million loan from the Japan Finance Corporation, a government corporation designed to issue loans to encourage Japanese businesses.

The money will be issued this month, and Ispace will have ten years to pay it back. Depending on whether the company is profitable or not, the interest rate will be either 0.5% or 4.15%.

Ispace’s one lunar landing attempt so far, Hakuto-R1, was a failure when its software thought it was close to the ground at three miles altitude and shut off its engines. The company however is going to try again, with the launch of its second lander, dubbed Resilience, scheduled for a January 2025 launch. It will also carry the company’s own Tenacious micro-rover, and will hopefully land as shown in the map to the right, in the north of the Moon’s near side.

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Genesis cover

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

 

The print edition can be purchased at Amazon, any other book seller, or direct from my ebook publisher, ebookit. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.


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

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

China launches first set of satellites for planned internet megaconstellations

9:42 am

China today successfully launched an unknown number of satellites in the first launch of one of its planned internet megaconstellations designed to compete with Starlink, its Long March 5B rocket lifting off from its coastal Wenchang spaceport.

Not revealing the number of satellites launched is probably a violation of the Outer Space Treaty, which requires each signatory to inform others of its launches and at a minimum the number of objects placed in orbit. This constellation, dubbed Guowang, is hoping to launch as many as 13,000 satellites, and that will require some coordination to prevent it from interfering with the constellations launched by others. Not revealing the size of this satellite group makes such coordination impossible.

In a bit of good news, it appears China has solved the problem of its Long March 5B rocket, which in the past had used its core stage to place objects in orbit. After payload deployment that core stage would be in an unstable an orbit that would quickly decay, allowing the stage to crash uncontrolled, thus threatening habitable areas worldwide. The rocket’s new upper stage now takes the payloads into orbit, so the core stage can drop off sooner and fall into the ocean harmlessly.

The leaders in the 2024 launch race:

129 SpaceX
61 China
16 Russia
13 Rocket Lab

American private enterprise still leads the rest of the world combined in successful launches 148 to 93, while SpaceX by itself leads the entire world, including American companies, 129 to 112.

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FAA eliminates a stupid licensing requirement imposed when it “streamlined” its launch licensing regulations

9:18 am

We’re from the government and we’re here to help! The Federal Aviation Administration (FAA) announced last week that it will stop demanding rocket companies redo a flight safety analysis that have already been done by the rocket’s spaceports, a new bit of red tape that was apparently added when the agency introduced its Part 450 “streamlined” licensing regulations in 2021.

The FAA announced Dec. 13 that it will accept flight safety analyses performed by federal launch ranges in California, Florida and Virginia in applications for launch licenses under regulations known as Part 450. That decision means that companies will no longer have to perform similar analyses specifically for the FAA as part of the licensing process. Launch companies had complained of the duplication of work needed to carry out FAA analyses in addition to those required by the ranges they were launching from.

The FAA’s own bureaucracy had recognized the stupidity of this requirement (as well as many others) in July 2023 report [pdf], but the agency’s management did nothing. Apparently the political appointees who ran the agency during the Biden administration either liked this red tape — slowing American business — or were too dense to take action.

Trump’s election victory has now obviously forced some action. Not only has the agency suddenly recognized this particular problem, one week after Trump’s victory it announced the formation of an independent committee of industry and academia to review, once again, its Part 450 regulations.

It seems this committee is largely a Potemkin Village to make the Trump leadership think the agency is doing something. Instead, the FAA should do what it did last week, and adopt the many recommendations of the July 2023 report, now. The committee can then move forward cleaning up Part 450 in other areas instead of simply repeating that past work.

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Conscious Choice cover

Now available in hardback and paperback as well as ebook!

 

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

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

 

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

 

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

 

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

Boeing to take more than a decade to refit two 747s for Air Force One

7:30 pm

Utter incompetence: According to recent news reports, Boeing will not be able to deliver the two 747s it is refitting to be the president’s Air Force One fleet until 2029, even though it signed a $3.9 billion contract to do so in 2018.

The delay is startling given that Boeing isn’t building the planes from scratch. During Trump’s first term, Boeing started to overhaul two 747s that were built for a Russian airline that never took the jets.

This is more than absurd, it is obscene. Boeing is handed two flightworthy 747s and almost $4 billion, and it can’t refit the two planes in less than a decade? It seems one of the first things Trump should do once he returns to office next month is cancel this contract entirely, demand a refund from Boeing, and simply convert his present fleet of “Trump Force One” airplanes that he has been using since 2020 for use as president. Cheaper, faster, and certainly a wiser use of taxpayer money.

As for Boeing, this story illustrates once again how far this company has fallen. Remember, it was Boeing that conceived, designed, and built the 747. Moreover, its 747 has been used for decades for Air Force One. For its engineers now to be incapable to refitting another two 747s for this purpose seems inconceivable, and suggests those same engineers should not be trusted on any new planes they build.

22 comments

Juno spots changes on Io’s surface in just a two-month span

10:57 am

Before and after images by Juno of volcanic ring on Io
Click for original image.

New photos taken just two months apart by Juno of a region dubbed Nusk Patera on the Jupiter moon Io showed the appearance of a distinct ring that had hardly been there before.

The pictures, taken during two recent fly-bys of the moon, are above, and show the change. From the caption:

A red ring formed around Nusku Patera in the two months between the spacecraft’s 58th flyby on Feb. 3, 2024, and its 60th on April 9, 2024. The ring obscures some nearby features like Creidne Patera. This ring, 683 miles (1,100 kilometers) wide is likely from a Pele-type plume rich in sulfur. Similar transient red rings were observed by NASA’s Galileo mission around Grian Patera and Surt and were associated with intense but short-lived thermal “outburst” eruptions.

In other words, sulfur from eruption from the central vent/caldera was flung into the sky enough that when it eventually settled back down it landed in a ring about 340 miles away from the center.

Other data from Juno, also released this week here and here, detected fresh lava flows at another volcanic region of Io dubbed, Zal Patera.

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Leaving Earth cover

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

 

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

 

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

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

Thanksgiving/Christmas fund drive is over. Big thanks to everyone who donated!

11:41 pm

Scroll down to read the newest posts.

Readers!

My annual Thanksgiving/Christmas fund drive for Behind the Black is now over. Though it sagged in the middle, the final week was an amazing barn-burner. My readers responded in an astonishing manner, so that 2024 now looks like it will turn out to be the best year for me financially since I started this webpage in 2010.

Thank you to all! I am always at a loss to express my gratitude for this support. No one is required to pay anything to read my work. And yet so many of you are still willing to do so. Thank you again!

I will leave this thank you notice up for the next few days, so that everyone can see it.

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SpaceX launches more Starlink satellites

9:39 pm

SpaceX today successfully launched 22 Starlink satellites, 13 of which were for its direct-to-cell constellation. The Falcon 9 rocket lifted off from Vandenberg in California, its first stage completing its ninth flight by landing successfully on a drone ship in the Pacific.

According to a tweet by SpaceX at the end of October, only five more launches were necessary to complete the first version of its direct-to-cell Starlink constellation. Today’s launch meets that criteria. Since the FCC has approved the constellation’s license, this means T-Mobile can start offering the service to customers, filling in all dead spots worldwide.

What makes this launch even more unique is that for the first time in quite awhile there was a four-day-plus gap between SpaceX launches. The company has been launching so often that it has been rare for more than two days to pass this year without a launch.

The leaders in the 2024 launch race:

129 SpaceX
60 China
16 Russia
13 Rocket Lab

American private enterprise now leads the rest of the world combined in successful launches 148 to 92, while SpaceX by itself leads the entire world, including American companies, 129 to 111.

One comment

Melinda Kathleen Reese – O Come O Come Emmanuel

6:01 pm

An evening pause: This was first posted in February 2019. As I noted then,

The video replays her singing the same thing three times. There is a good reason, as she almost appears to have begun singing as a lark, and the acoustics of the church astonish her. The repeats help bring out this amazing quality.

I always open the Christmas-Hannukah holiday season with this truly glorious piece of music, as it speaks to both religions. And it is one magnificent song, sung here magnificently.

May all my readers have a glorious weekend.

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Perseverance reaches top of Jezero Crater rim

1:41 pm

The view west out of Jezero Crater
Click for high resolution panorama. For original images, go here and here.

Overview map
Click for interactive map.

After spending more than three and a half years exploring the floor of Jezero Crater, the rover Perseverance has finally reached the top of the crater’s western rim, and is about to begin exploring the mountainous and potentially rich mining region to the west.

The panorama above, created from two pictures taken by Perseverance’s right navigation camera on December 11, 2024 (here and here), has been cropped, reduced, enhanced, and annotated to post here. It looks west into that mountainous region, with the yellow lines on the overview map to the right indicating the approximate view. The blue dot on that map marks Perseverance’s present position, on top of Lookout Hill, the name the rover team has given to that spot on the rim.

The low resolution of the region beyond the grey strip is unexplained. For some reason the rover team has not yet updated the interactive map showing Perseverance’s travels with the many high resolution pictures that Mars Reconnaissance Orbiter (MRO) has taken of this region, in anticipation of Perseverance’s travels there. I expect however this will change shortly.

Witch Hazel Hill is the first target beyond the rim, where there is an outcrop 330-feet-high with many layers. The rover will then head downhill and south to check out a spot that the scientists believe might show features existing from before Jezero Crater was formed. The rover will then head back up to the rim further south to look at an outcrop of blocks that might actually be ejecta from another much larger Martian impact.

These blocks may represent ancient bedrock broken up during the Isidis impact, a planet-altering event that likely excavated deep into the Martian crust as it created an impact basin some 745 miles (1,200 kilometers) wide, 3.9 billion years in the past.

Jezero sits on the northwestern rim of Isidis.

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Curiosity begins to round the corner out of Gediz Vallis

11:37 am

Curiosity looks ahead
Click for original image.

According to an update yesterday from the rover team, the Mars rover Curiosity has finally begun to round the corner of the northern nose of the long ridge dubbed Texoli that forms the western wall of Gediz Vallis, the slot canyon that the rover has been exploring since August 2022.

The picture to the right, reduced, sharpened, and annotated to post here, was taken on December 10, 2024 and shows the view looking west. The red dotted line indicates the planned route. As the rocky ground indicates, travel forward in the near term will be interesting. As noted in the update:

While we want to head southwest, we had to divert a bit to the north (right of the image shown) to avoid some big blocks and high tilt. The path is very constrained in order to avoid driving over some smaller pointy rocks, scraping wheels along the sides of blocks, or steering into the side of blocks that might cause the steering to fail. And we also needed to worry about our end-of-drive heading to be sure the antenna will be clear to talk to Earth for the next plan. We ended up relying on the onboard behavior to help us optimize everything by implementing a really interesting and curvy 24-meter path (about 79 feet).

» Read more

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Rocket startup Stoke Space completes static fire test of first stage engine

10:02 am

Stoke's Nova rocket
Stoke’s Nova rocket

The rocket startup Stoke Space revealed yesterday that it has completed a static fire test of the first stage engine it will use on its Nova rocket, shown in the graphic to the right.

The test, which was not the first for this engine, proved out several new technologies.

Stoke Space called the test significant for several reasons. It’s the first hotfire of the company’s Block 2 (flight layout) stage 1 engine, and this engine architecture — called full-flow staged combustion (FFSC) — is considered particularly challenging. Only two entities in the world — Stoke and SpaceX — have successfully developed FFSC engines. … Stoke’s stage 1 engine is a liquified natural gas/liquid oxygen engine capable of producing 100,000 pounds of thrust. The duration of the test was not revealed.

It was the first time Stoke has tested on its new vertical test stand in Moses Lake. The company’s testing philosophy is that you must “test like you fly,” and it believes vertical testing is key to engine development.

Nor is the first stage engine the only technological innovation. Nova’s second stage uses a radical design whereby the engine releases its thrust through a ring of small nozzles on the outside perimeter of the stage, rather than a single central nozzle. This design is what the company hopes will allow it to return that upper stage intact for reuse.

The four year old company has raised $100 million in investment capital, but has also faced environmental red tape from the Space Force for its launch facility at Cape Canaveral. It had previously targeted 2025 for the first test flights of Nova, but that schedule appears unlikely because of this red tape.

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SpaceX requests special election to make Starbase at Boca Chica a city

9:41 am

In a letter [pdf] sent yesterday to a local judge, SpaceX requested that a special election be held in Cameron County on whether its Starbase facilities in Boca Chica should be incorporated as a city.

To continue growing the workforce necessary to rapidly develop and manufacture Starship, we need the ability to grow Starbase as a community. That is why we are requesting that Cameron County call an election to enable the incorporation of Starbase as the newest city in the Rio Grande Valley.

Incorporating Starbase will streamline the processes required to build the amenities necessary to make the area a world class place to live—for the hundreds already calling it home, as well as for prospective workers eager to help build humanity’s future in space. As you know, through agreements with the County, SpaceX currently performs several civil functions around Starbase due to its remote location, including management of the roads, utilities, and the provision of schooling and medical care for the residents. Incorporation would move the management of some of these functions to a more appropriate public body.

The letter went on to list the many other things SpaceX is already doing to benefit the area, including many of the environmental requirements imposed on it by the FAA and Fish & Wildlife.

At this moment there has been no response from the judge or Cameron County. I suspect there will be no objection, and this vote will take place in the near future. I also expect it will pass, because SpaceX employees now make up almost the entire population of Boca Chica.

9 comments

December 12, 2024 Quick space links

4:55 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

Head of FAA resigns

1:32 pm

You could leave now for all I care: Mike Whitaker, who has been director of the Federal Aviation Administration (FAA) under the Biden administration and who has apparently been the main source of that agency’s increased red tape that has almost destroyed the new rocket industry that had been emerging during the first Trump administration, announced today that he is stepping down next month.

Mike Whitaker announced his pending resignation in a message to employees of the FAA, which regulates airlines and aircraft manufacturers and manages the nation’s airspace. He became the agency’s administrator in October 2023.

Since then, the challenges confronting Whitaker have included a surge in close calls between planes, a need for stricter oversight of Boeing. antiquated equipment and a shortage of air traffic controllers at a time of high consumer demand for air travel.

The article at the link is from PBS, so of course it makes this federal bureaucrat appear a hero. Instead, he was a disaster for America’s space industry, forcing unnecessary delays in SpaceX’s Starship/Superheavy program, imposing new regulations that claimed to streamline the launch licensing process but did exactly the opposite, and generally forcing FAA regulators to take a fearful attitude to any new technology, so much so that it became almost impossible for that new technology to launch.

As for the aviation industry, Whitaker’s term did little to change things. For example, he did nothing to shut down the DEI programs at major airline and airplane companies that were causing the hiring of unqualified people.

All I can say is good riddance.

5 comments

Land of knobs

12:53 pm

Land of knobs
Click for original image.

Cool image time! The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on July 17, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). Labeled merely as a “terrain sample,” it was likely taken not as part of any specific research project, but to fill a gap in the camera’s schedule in order to maintain its proper temperature.

When the camera team does this, they try to pick interesting targets. In this case, they targeted this 400-foot-high pointy-topped hill. The smoothness of its slopes suggest this hill is made up largely of packed dust, possibly a hardened former dune. This hypothesis seems strengthened by the erosion on the eastern slopes, which appears to be areas where that packed sand has worn or blow away.

Think of sandstone in the American southwest. It is made of sand that has hardened into rock, but wind and water and friction can easily break it back into dust particles, resulting often in the spectacular and weird geological shapes that make the southwest so enticing.

But is this sand?
» Read more

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Io’s volcanoes get their lava from separate magma chambers, not a global underground ocean of magma

11:11 am

Io's interior as presently theorized
Click for original animation.

Using data collected from Juno’s multiple fly-bys of the Jupiter moon Io, scientists now hypothesize that the moon does not have a global underground ocean of magma, feeding its many volcanoes, but that instead each volcano is fed its lava from a separate magma chamber.

The graphic to the right illustrates the present conclusion. You can read the paper here [pdf]. From the press release:

The Juno team compared Doppler data from their two flybys with observations from the agency’s previous missions to the Jovian system and from ground telescopes. They found tidal deformation consistent with Io not having a shallow global magma ocean.

“Juno’s discovery that tidal forces do not always create global magma oceans does more than prompt us to rethink what we know about Io’s interior,” said lead author Ryan Park, a Juno co-investigator and supervisor of the Solar System Dynamics Group at JPL. “It has implications for our understanding of other moons, such as Enceladus and Europa, and even exoplanets and super-Earths. Our new findings provide an opportunity to rethink what we know about planetary formation and evolution.” [emphasis mine]

The highlighted words indicate the significance of this data. It possibly suggests that the underground oceans of water that have been theorized for these other moons — where life could possibly exist — might be mistaken. Instead, they might have smaller pockets of water, similar to Io’s many magma chambers.

Everything here however is uncertain, including these new conclusions about Io. We just don’t have enough data from any of these moons to make any definitive conclusions.

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ESA continues to dither about building a heavy lift rocket

10:47 am

In what almost appears to be a clown show, the European Space Agency (ESA) has three times issued and then retracted and then reissued a request for proposals for studying possible designs to possibly build a heavy lift rocket to both replace Ariane-6 as well as compete with SpaceX’s Starship/Superheavy.

ESA published an initial call for its European 60T LEO Reusable Launch System Pathfinder Study initiative on 20 November. The call was, however, deleted later that day. On 3 December, a second version of the call was published and then removed, once again, on the same day. On 10 December, ESA published a third iteration of the call, with this one being the first to remain published overnight.

The second version put more emphasis on “time and cost efficiency.” The third version added details noting the limitations of Ariane-6 (its cost, limited payload capacity, and non-re-usability).

When ESA issued the second version, I noted its lack of urgency. “This is ‘call’ for a ‘study’ to ‘explore’ the ‘options’ for development. Hell will freeze over before ESA starts construction.” The new version doesn’t change this in the slightest. It only recognizes more fully the bad decisions that ESA made in 2015 when it approved the expendable design of Ariane-6, making it too expense then to compete with SpaceX’s Falcon 9.

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Chinese citizen arrested for flying drone illegally over Vandenberg

10:29 am

Yinpiao Zhou, a Chinese citizen in America on a legal immigrant visa, has been arrested for flying a drone illegally over Vandenberg Air Force Base.

Nearly a mile above Vandenberg Space Force Base in Santa Barbara County, a hacked drone soared through restricted airspace for roughly an hour. The lightweight drone photographed sensitive areas of the military facility on Nov. 30, including a complex used by SpaceX, according to federal investigators. The drone then descended back to the ground, where the pilot and another man waited at a nearby park.

Before either could leave however, four security officers from Vandenberg showed up. Initially Zhou lied about what he was doing, hiding the drone under his jacket. At one point however the officers spotted the drone, forcing Zhou to admit the truth as well as delete the footage on the drone.

Neither Zhou or the second man, who remains unidentified, were arrested at that time. Zhou was arrested on December 9, 2024 at San Francisco International Airport, just before he was to board a flight back to China. He is charged with flying a drone illegally out of his line of sight and in a no-fly zone, and remains in custody.

It appears this was an intended spying operation by China or one of its pseudo-companies, attempting to steal more information about SpaceX’s technology in order to copy it. Why Zhou and that other man were not arrested immediately is unclear.

17 comments

Ispace signs agreement with lunar mining startup

10:15 am

Landing sites on Moon

The Japanese lunar lander startup Ispace has now signed an agreement with a lunar mining startup dubbed Magna Petra to transport the latter company’s helium-3 mining equipment to the Moon.

In a memo of understanding, ispace and Magna Petra have agreed to collaborate to utilize the moon’s resources for economic benefits to life on Earth, the companies announced Tuesday, Dec. 10. Through “non-destructive, sustainable harvesting,” according to a joint statement, Magna Petra plans to one day extract “commercial quantities” of helium-3 isotopes from regolith on the lunar surface for delivery and distribution back on Earth, where the resource is facing an extreme supply shortage.

Ispace meanwhile still has to prove it can put a lander on the Moon. Its first attempt, Hakuto-R1, almost succeeded, but crashed in April 2023 when its software thought it was just above the ground and shut down its engines when it was still three miles high. The company’s second attempt, dubbed Resilience and carrying a rover dubbed Tenacious, is scheduled for launch in January 2025. The landing site is shown on the map to the right, within Mare Frigoris in the northern part of the Moon’s nearside hemisphere.

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A satellite startup in Oman signs on to China’s lunar base partnership

10:03 am

Middle East, showing Oman's proposed spaceport

Oman Lens, a satellite startup in Oman, has signed an agreement with China to participate in its International Lunar Research Station (ILRS) lunar base project.

This follows Oman’s first suborbital launch, which according to Oman’s state-run press lifted off from its Duqm proposed spaceport facility and reached space. None of this however has been confirmed, though government officials said they hope to do three more suborbital test flights in the next year.

The Duqm spaceport hopes to be fully operational for orbital flights by 2026. Besides China, Oman has also been in negotiations with various American rocket startup companies, though no deals have been announced, mostly because of the State Department’s ITAR restrictions protecting American technology from hostile foreign theft. Oman is not necessarily considered a friendly country.

It appears Oman decided to make a deal with China when it couldn’t make one with the U.S.

As for China’s ILRS project — it formed in competition with the U.S. Artemis Accords — it has now signed thirteen countries and about a dozen academic institutions and international companies. It claims it hopes to get fifty countries on board, but that number likely includes such institutions, not nations.

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China launches five satellites to test the design of a planned laser communications constellation

9:41 am

China today successfully placed the first five satellites of a planned satellite constellation called the “High Speed Laser Diamond Constellation,” its Long March 2D rocket lifting from the Jiuquan spaceport in northwest China.

The satellites are apparently intended to test the engineering of using lasers for communications. China’s state-run press provided little further information. Nor did it say where the rocket’s lower stages, using toxic hypergolic fuels, crashed inside China.

128 SpaceX (with a launch scheduled for later today)
60 China
16 Russia
13 Rocket Lab

American private enterprise still leads the rest of the world combined in successful launches 147 to 92, while SpaceX by itself leads the entire world, including American companies, 128 to 111.

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ADRAS-J gets within 50 feet of abandoned rocket stage

3:28 pm

abandoned upper stage, taken by ADRAS-J
Image taken during ADRAS-J’s initial approach in April 2024.
Click for original image.

The demo maneuvering spacecraft ADRAS-J, built by the Japanese orbital tug startup Astroscale, has successfully maneuvered to within 50 feet of the abandoned rocket stage that the company hopes to grab and de-orbit on a later mission.

When ADRAS-J was 50 meters behind the upper stage the spacecraft reduced the gap in a straight-line approach then maneuvered to approximately 15 meters below the Payload Attach Fitting (PAF) — the planned capture point for the follow-on ADRAS-J2 mission — aligning the spacecraft’s relative speed, distance, and attitude. ADRAS-J successfully maintained this position until an autonomous abort was triggered by the onboard collision avoidance system due to an unexpected relative attitude anomaly with the upper stage. The spacecraft safely maneuvered away from the debris as designed before reaching the CIP. Astroscale Japan is currently investigating the cause of the abort.

Engineers will have to understand that the cause of that abort prior to launching ADRAS-J2, the mission that will grab the stage and de-orbit it.

Hat tip to BtB’s stringer Jay.

3 comments

December 11, 2024 Quick space links

3:17 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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A review of the last half century of major ice calving events in Antarctica detects no trend

11:58 am

47-year trend of large iceberg calving events in Antarctica
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The uncertainty of science: A review by scientists of major ice calving events in Antarctica that have occurred in the last 47 years has detected absolutely no trend either up or down, despite decades of predictions that human caused global warming would cause huge sections of the icecap to break off and catastrophically change the Earth’s climate.

The graph to the right comes from figure 4 of the paper, and illustrates the lack of trend. Note how the actual observations, the blue dots, show no increase in large calving events. From the abstract:

We use 47 years of iceberg size from satellite observations. Our analysis reveals no upward trend in the surface area of the largest annual iceberg over this time frame. This finding suggests that extreme calving events such as the recent 2017 Larsen C iceberg, A68, are statistically unexceptional and that extreme calving events are not necessarily a consequence of climate change.

The researchers of course genuflect to human-caused global warming in their conclusion by stating that the shrinkage predicted in the Antarctic ice cap (but not yet seen in any significant amount) could instead be occurring due to an increase in small calving events.

The lack of an upward trend in annual maximum iceberg area could be attributed to an overall increase in the number of smaller calving events, which may inhibit the development of extremely large calving events. As such, small calving events pose the greatest threat to the current stability of Antarctic ice shelves.

Since there is no detailed or reliable data of the number of smaller calving events, this hypothesis is entirely made up, and carries no weight. It is simply a fantasy created to maintain the fiction of global warming. A more open-minded look at these results would say that the larger events provide an excellent guide to the overall trend, and that the icecap simply isn’t shrinking as predicted.

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