Author: Robert Zimmerman

Strange meandering ridge amidst Martian glaciers

12:21 pm

Overview map

Strange meandering ridge in glacier country

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on June 21, 2023 by the high resolution camera on Mars Reconnaissence Orbiter (MRO). Its focus is the meandering ridge in the center of the picture, which the scientists intentially describe vaguely as a “ridged flow-like feature”.

The elevation difference between the high and low points within the picture is about 500 feet, though most of that slope occurs in the lighter terrain on the right. The darker area where the ridge is located has no clear elevation trend, though there are hints of depressions and rises within it.

The yellow dot on the overview map above marks this location, deep within the chaos terrain dubbed Deuteronilus Mensae, on the western end of the 2,000 long northern mid-latitude strip I dub glacier country, because practially every image from there shows glacial features.

To underline this fact, the red and white dots mark previous cool images from 2020 and 2021, with the first showing an eroded glacier and the second glacial ice sheets.

The mesa to the east of this picture rises more than 6,000 feet to its peak, as indicated by the black dot. This is also the highest point for this entire grouping of mesas. All are surrounded by a single large apron of material, likely a mixture of alluvial fill and ice.

What however caused the narrow ridge in the picture above? Is it ice or bedrock? If ice why is it so different than the glacial material that seems to surround it? If bedrock, it suggests it is instead an ancient inverted channel created when that ridge was a canyon through which ice or water flowed, compacting the canyon floor. When the terrain around it eroded away it was more resistent and became a ridge instead.

I have no answer. The colors suggest the ridge is rock, not ice, but that is not conclusive.

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FCC raises questions about SpaceX’s application to link cell phones to Starlink

9:20 am

The FCC has responded to SpaceX’s application to link cell phones to Starlink with a set of questions, mostly centered on finding out whether the company’s system might interfere with other communications systems.

“This analysis should take into account the worst case scenario of all satellites transmitting at the same time, including different power levels required for rain fade and cloud cover as well as clear sky conditions over a particular area of coverage,” the FCC wrote.

In addition, the same analysis should look at the “possibility of loss of service by other authorized satellite and terrestrial operators in that area,” the Commission added. Another request asks SpaceX to provide “a map with projected beam coverage” for the US, showing the maximum and typical power levels of the satellite cellular service. The FCC also wants to know how the company can shut down the cellular Starlink system in the event interference arises over certain geographic areas.

The FCC’s concerns appear reasonable, but no one should dismiss the possibility that politics are involved as well. The Biden administration, which now has a majority of appointees on the FCC, has made it clear it opposes almost everything Elon Musk is doing.

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Virgin Galactic trims staff and spending

9:08 am

Despite having completed its fifth commercial suborbital flight on November 2, 2023, Virgin Galactic announced yesterday that it is laying off staff and cutting spending.

The number of people laid off was not revealed. Supposedly the company has done this as part of its effort to develop an upgraded version of SpaceShipTwo.

The company reported having $980 million of cash and equivalents on hand at the end of the second quarter this year, when it reported a net loss of $134.4 million. The company has not disclosed its estimated costs for development of the Delta vehicles, but said it expected those vehicles to enter service in 2026. The company expects only limited revenue from VSS Unity, which is able to fly monthly carrying up to four customers at a time.

I instead suspect that demand for suborbital flights is dwindling because of the competition from orbital operations. Had this company started flying a decade ago, as promised numerous times by Richard Branson, it would have been ahead of the curve. It didn’t and thus missed the boat.

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Bulgaria to sign Artemis Accords

9:01 am

NASA yesterday announced that Bulgaria will sign the Artemis Accords tomorrow, becoming the 32nd nation to join the alliance.

The full list of signatories is as follows: Argentina, Australia, Bahrain, Brazil, Bulgaria, Canada, Columbia, Czech Republic, Ecuador, France, Germany, India, Iceland, Israel, Italy, Japan, Luxembourg, Mexico, the Netherlands, New Zealand, Nigeria, Poland, Romania, Rwanda, Saudi Arabia, Singapore, South Korea, Spain, the United Kingdom, the United Arab Emirates, the Ukraine, and the United States.

The competing alliance of communist nations, led by China, includes only Russia, Venezuala, Pakistan, Belarus, Azerbaijan, and South Africa. That former deep Soviet block nations like Bulgaria and Romania went with the west rather than China illustrates the international distrust of China and its authoritarian methods.

Regardless, we now see a rough outline of the coming cold war in space.

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Lucy: Dinkinesh’s moon is actually a contact binary

8:42 am

Dinkinesh's contact binary moon
Click for original image.

As more images have arrived from Lucy’s fly-by of Dinkinesh scientists have discovered that its moon is actually a contact binary.

The Lucy picture to the right, cropped, reduced and sharpened to post here, shows that contact binary on the right.

This image shows the asteroid Dinkinesh and its satellite as seen by the Lucy Long-Range Reconnaissance Imager (L’LORRI) as NASA’s Lucy Spacecraft departed the system. This image was taken at 1 p.m. EDT Nov. 1, 2023, about 6 minutes after closest approach, from a range of approximately 1,010 miles. From this perspective, the satellite is revealed to be a contact binary, the first time a contact binary has been seen orbiting another asteroid.

Data from the fly-by is still being downloaded.

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SpaceX launches 23 Starlink satellites

8:27 am

SpaceX last night successfully launched 23 Starlink satellites, its Falcon 9 rocket lifting off from Cape Canaveral.

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

The leaders in the 2023 launch race:

80 SpaceX
50 China
14 Russia
7 Rocket Lab
7 India

American private enterprise now leads China 92 to 50 in successful launches, and the entire world combined 92 to 79. SpaceX by itself once again leads the rest of the world (excluding American companies) 80 to 79.

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November 7, 2023 Quick space links

2:21 pm

Courtesy of BtB’s stringer Jay.

 

 

 

 

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While 100 universities condemn Hamas, the Ivy League is condemned for looking the other way

1:33 pm

These might be the worst colleges in the country
These are probably the worst colleges in the country

The one good thing that has come from the horrible slaughter of innocents by Hamas on October 7th is that it has made obvious the bankruptcy of America’s so-called elite Ivy League colleges, suggesting without question that if you are either a high school student who wants to get a real education or an employer who wants to hire the best college graduates, these are not the places to find either.

The constrast was made very clear by two letters this week. First, more than one hundred universities nationwide issued a letter harshly condemning Hamas while expressing whole-hearted support for Israel.

We Stand Together With Israel Against Hamas

We are horrified and sickened by the brutality and inhumanity of Hamas. Murdering innocent civilians including babies and children, raping women and taking the elderly as hostages are not the actions of political disagreement but the actions of hate and terrorism. The basis of all universities is a pursuit of truth, and it is times like these that require moral clarity. Like the fight against ISIS, the fight against Hamas is a fight against evil. We, the presidents and chancellors of universities, colleges and higher education associations across the United States of America and the world, stand with Israel, with the Palestinians who suffer under Hamas’ cruel rule in Gaza and with all people of moral conscience. [emphasis in original]

Not surprisingly, none of the Ivy League schools as well as Stanford and the entire California university system signed on. Apparently the torture, rape, and murder of women and children is okay with these “elite” colleges, as long as it is Jewish women and children who are tortured, raped, and murdered.

The second letter directly addressed this lack of moral commitment by these so-called “elite” colleges, and did so by attacking Harvard in particular. On November 4, Bill Ackman, a billionaire hedge fund manager and Harvard alumni, published a 3,000+ word letter directed Harvard’s president, Claudine Gay, and the Harvard Corporation Board, strongly condemning Gay’s unwillingness to unequivocally condemn the oppressive culture on Harvard’s campus, as well as its growing anti-Semitism.
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The grand Valles Marineris of Mars

11:30 am

The grand canyon of Mars
Click for original image.

Time for another cool image of the grand canyon of Mars, Valles Marineris. The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on May 24, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows a small section of the floor of this gigantic canyon, where orbital data has detected light-toned materials. From the caption:

Many of the Valles Marineris canyons, called chasmata, have kilometer-high, light-toned layered mounds made up of sulfate materials. Ius Chasma, near the western end of Valles Marineris, is an exception.

The light-toned deposits here are thinner and occur along both the floor and walls, as we see in this HiRISE image. Additionally, the sulfates are mixed with other minerals like clays and hydrated silica. Scientists are trying to use the combination of mineralogy, morphology, and stratigraphy to understand how the deposits formed in Ius Chasma and why they differ from those found elsewhere in Valles Marineris.

The picture however gives no sense of the monumental terrain that surrounds it.
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ESA commits to a zero space junk policy

9:18 am

The European Space Agency (ESA) announced yesterday that it is now commited to a zero space junk policy, and has established its own standards for the end-of-life disposal of all orbiting spacecraft, to be included during the design and construction.

The policy also requires collision avoidance systems as well as engineering designed to reduce light pollution that harms ground-based astronomy.

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Three European nations sign deal with Arianegroup for use of Ariane-6

9:12 am

In a separate deal outside of the European Space Agency, Germany, France, and Italy have signed a deal with the private rocket company Arianegroup to use its still unlaunched Ariane-6, assuming the company can reduce costs.

The agreement will provide €340 million ($365 million) of financing a year for Arianespace’s Ariane 6 rocket in exchange for a commitment to an 11% cut in costs. The rocket will also be awarded at least four missions from public institutions a year, while the lighter Vega C launcher will get at least three.

Essentially the deal is intended to keep Ariane-6 afloat, as its high cost has made it difficult to attract customers. At the same time, the contract demands those costs be reduced, and adds pressure to that demand by noting that future and additional launches will be awarded on a purely competitive bidding process. It appears these three countries will open bidding not only to the new rocket startups being developed in Europe, but American rocket companies as well.

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Japan delays asteroid mission due to its rocket problems

9:02 am

Japan’s space agency JAXA has decided to delay its Destiny+ mission to the asteroid Phaethon until 2025 due to the continuing problems getting its Epsilon-S rocket off the ground.

Epsilon-S is intended as an upgrade to Japan’s Epsilon rocket, but its development has been plagued by failures. In October ’22 there was a launch failure of Epsilon, and in July ’23 the second-stage solid-fueled motor of Epsilon-S exploded during a test.

Phaethon is the parent asteroid of the Geminid meteor shower that occurs each year in December. According to the original plan Destiny+ would have done its fly-by of the asteroid in 2029. No new arrival date has been announced.

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Two Russian satellites — one thought defunct — have been tracked in rendezvous maneuvers

8:51 am

The American commercial satellite tracking company has over the past two years identified two Russian satellites — one thought defunct — that have rendezvoused and done proximity maneuvers.

Resurs-P3 — a Russian Earth observation satellite — performed a large maneuver in November 2022 after years of inactivity, and approached the Russian military satellite Cosmos-2562, according to a LeoLabs briefing.

The maneuver by Resurs-P3 “placed it in an entirely new orbit shared by Russian assets with non-publicly disclosed payloads,” said the briefing. “Based on the approaches observed by LeoLabs, it’s highly likely that Cosmos-2562 has an electro-optical payload and has collected high-resolution imagery of Resurs-P3.”

This new data further documents the long-term classified Russian effort to develop such satellite maneuvering capability, both to track and inspect its own satellites as well as do the same to the satellites of others. The unstated capability also includes the ability to destroy a satellite also, once rendezvous is achieved.

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Astra secures temporary investment funding to keep it afloat

8:44 am

Astra announced yesterday that it has secured temporary funding from private sources to cover its shortfall of cash and allow it to secure additional funds to keep it alive. From the second link:

In a statement issued after the close of trading, Astra said that JMCM Holdings LLC and Sherpa Venture Funds II, LLP, which it described as affiliates of two early investors in Astra, agreed to provide $13.4 million in “initial financing” as part of a non-binding term sheet Astra announced Oct. 23 that sought to raise $15 million to $25 million.

As part of the agreement, the investors will purchase the $8 million loan that Astra had from an unnamed institutional investor from August. Astra had defaulted on the terms of the loan agreement last week when its cash reserves dropped below $10.5 million, triggering a $3.1 million payment at a higher interest rate. The investors will also provide a $3.05 million bridge loan due Nov. 17, and purchase warrants for Astra stock.

The company is not out of the woods quite yet. It needs to obtain new investment capital by November 17th, when that bridge loan comes due.

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Sing with me!

6:01 pm

An evening pause: Reggie, the performer, simply sets up on the street and asks passersby to sing with him. This video includes a selection of some singers. From the youtube website:

As a musician, I’m all about creating musical experiences that have people feeling happy and free, and that’s why the “Sing With Me for Free” series exists. Since 2018, I have asked thousands of random people to sing with me on camera. A lot of people have said no, some have said no initially but changed their minds to yes, and some have said yes right away. I ask these people to sing with one purpose: to create a way for them to experience a sense of happiness and freedom they did not feel before. And much of the time, this actually works (and that makes ME happy).

Hat tip Diane Zimmerman

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Martian lava that buried a crater

5:21 pm

Martian lava flow through crater
Click for original image.

Cool image time! The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on June 24, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows a lava flow that cut through an older 2-mile-wide crater, mostly burying it as it burst through the crater’s southwest and northeast rims. From the caption:

A lava channel extends from the feature and continues 60 kilometers to the northeast, growing deeper along its path. The circular formation is likely an eroded impact crater whose walls have been breached by the lava as it surrounded the rim and then infilled the crater. Alternatively, it could represent the location of a volcanic vent that sourced some of the lavas that formed the channel.

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November 6, 2023 Quick space links

3:55 pm

Courtesy of BtB’s stringer Jay.

 

 

 

 

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Middle East Arabs know Hamas is wrong and Israel is right, even if America’s stupid college students don’t

12:28 pm

Hamas vs Israel
Even the Arabs recognize these facts.
Courtesy of Doug Ross.

The past week has been very revealing, as hundreds, even thousands of pro-Hamas demonstrators have swarmed the streets of New York, Washington, London, with some protesters in Washington actually attempting to break into the White House while others vandalized statues and monuments.

These new-Nazis demanded Israel stop fighting Hamas and let it get away with its savage slaying of more than 1,400 citizens, including the torture and rape of women and children. To these fools, Hamas is heroic for killing Jews, and must be allowed free rein to kill them all so that Hamas can rule Israel “from the river to the sea.”

The great irony here is that while these protesters see nothing wrong with mass murder by Hamas, the leaders of other Arab countries have a decidedly different opinion. On October 31, 2023, only days after Israel’s ground attack began, a major official in the government of the United Arab Emirates (UAE) made it clear that not only does that country support the Abraham Accords, its peace treaty with Israel, he also unequivocally condemned Hamas’ brutality.
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