Category: Points of Information

Very brief descriptions, with appropriate links, of current or recent news items.

Starlink and National Science Foundation sign deal coordinating spectrum use

9:10 pm

SpaceX and the National Science Foundation (NSF) today signed an agreement coordinating the use of radio spectrum so that Starlink satellites will not interfere with radio astronomy.

The National Science Foundation (NSF) and SpaceX have finalized a radio spectrum coordination agreement to limit interference from the company’s Starlink satellites to radio astronomy assets operating between 10.6 and 10.7 GHz. The agreement, detailed in a statement released by NSF today, ensures that Starlink satellite network plans will meet international radio astronomy protection standards, and protect NSF-funded radio astronomy facilities, including the National Radio Astronomy Observatory (NRAO) and the Green Bank Observatory (GBO).

This deal was part of a larger negotiation with the entire astronomy community to limit the problems caused to astronomy by the 3,000-plus Starlink satellites presently in orbit. These other actions include

…continuing to work to reduce the optical brightness of their satellites to 7th visual magnitude or fainter by physical design changes, attitude maneuvering, or other ideas to be developed; maintaining orbital elevations at ~700 km or lower; and providing orbital information publicly that astronomers can use for scheduling observations around satellite locations.

This agreement demonstrates again that SpaceX has tried hard to be a good citizen in this matter. It also illustrates once again that ground-based astronomical observations is becoming increasingly impractical. Astronomers have to go to space, and if Starship flies as SpaceX desires, the company will provide them a way to do it.

One comment

January 10, 2023 Quick space links

5:11 pm

Courtesy of BtB’s stringer Jay, who probably has more energy than me at this time.

 

 

 

  • Virgin Orbit’s finances are really bad

    • The article essentially outlines the loss of revenue because the company could not launch in 2022, waiting for the UK bureaucrats to say yes. To stay afloat it borrowed lots of money, with the hope that revenues would begin pouring in with launches in 2023. That is now unlikely, at least for several months.

 

 

  • China’s CAS-Space shows off models of its future rockets

    • CAS-Space is a pseudo-company, supposedly private but really owned by the Chinese Academy of Sciences. As Jay wrote, “Looks like they copied both SpaceX and Blue Origin.” I found the similarity to be shameless, especially with its manned capsule.

 

One comment

China’s Mars orbiter and rover in trouble

8:37 am

Yesterday we reported a tweet from Scott Tilley that suggested engineers were having trouble establishing a communications link with China’s Mars orbiter Tienwen-1.

Today it appears that communications with China’s rover Zhurong have also not resumed following its winter hibernation from May until December.

The Post independently confirmed with two sources on Thursday that the rover should have resumed running by now, but no contact has been established.

Though Zhurong’s solar panels can be tilted to kick dust from them, during hibernation this is apparently not possible. Because the winter dust season this year was especially bad (killing InSight for example), it is possible that Zhurong experienced the same fate.

Zhurong had a 90 day mission, and instead lasted a year. Moreover, tt was never expected to survive a Martian winter. The achievement thus remains grand.

As for the Tienwen-1 orbiter, it would be a much bigger failure if communications cannot be re-established. China without question expected this orbiter to operate for years, even functioning as a communications link for later landers/rovers. Its loss will force a revision of later plans.

3 comments

SpaceX successfully launches 40 OneWeb satellites

10:02 pm

Using its Falcon 9 rocket, SpaceX tonight successfully placed 40 OneWeb satellites into orbit from Cape Canaveral, Florida.

This was only the second launch of this first stage, which landed successfully at Cape Canaveral. The rocket has now deployed all 40 satellites successfully, putting more than 80% of OneWeb’s constellation in orbit.

SpaceX had also planned a Starlink launch from Vandenberg in California tonight, but an hour before launch it was delayed until tomorrow.

At the moment only SpaceX and China have launched any satellites in 2023, and are both tied at 2 launches each.

3 comments

Virgin Orbit launch a failure today from Cornwall, Great Britain

4:43 pm

Five minutes after I posted the information below, Virgin Orbit’s announcer came on to announce that LauncherOne had suffered “an anomaly” and would not successfully place the satellites in orbit.

The failure must have occurred during a later stage after the rocket was released and was preparing for the second engine burn of its upper stage. They have ended the live stream without providing a further update, which is not surprising considering the data that needs to be analyzed.

Original post:
—————
Virgin Orbit today successfully completed the first orbital launch ever the United Kingdom, taking off from a runway in Cornwall, Great Britain, and then releasing its LaunchOne rocket from the bottom of a 747.

All in all 9 satellites were launched. This was Virgin Orbit’s fifth successful commercial launch, and hopefully will open a 2023 whereby the company will makeup for six months of bureaucratic red tape that essentially blocked about six launches last year. As of this writing the satellites have not yet deployed.

The 2023 launch race:

2 China
1 SpaceX

Two SpaceX launches coming later this evening.

5 comments

January 9, 2023 Quick space links

3:42 pm

Courtesy of BtB’s stringer Jay.

  • An image and video as SpaceX restacks Superheavy #7 and Starship #24 for testing

 

 

 

 

Leave a comment

Defrosting Martian Dunes

3:07 pm

Defrosting Martian dunes
Click for full image.

Cool image time! The photo to the right, cropped, reduced, and sharpened to post here, was a captioned image on January 6, 2023 from the science team of the high resolution camera on Mars Reconnaissance Orbiter (MRO). From the caption by Alfred McEwen of the Lunar & Planetary Laboratory in Arizona:

In the late winter when first illuminated, the carbon dioxide frost at high latitudes will begin to sublimate. Over sand dunes, the defrosting spots and mass wasting on steep slopes produce striking patterns. This scene is especially artistic given the shapes of the dunes as well as the defrosting patterns.

» Read more

5 comments

Webb finds “wide diversity of galaxies in the early universe”

12:35 pm

Webb galaxies in the early universe
Click for full image.

New data from the Webb Space Telescope and presented this week at an astronomy conference has found that galaxies in the early universe exhibit much of the same range of shapes and morphologies seen in the recent universe, a result that was not expected.

The image to the right comes from the press release. You can read the research paper here [pdf].

The study examined 850 galaxies at redshifts of z three through nine, or as they were roughly 11-13 billion years ago. Associate Professor Jeyhan Kartaltepe from Rochester Institute of Technology’s School of Physics and Astronomy said that JWST’s ability to see faint high redshift galaxies in sharper detail than Hubble allowed the team of researchers to resolve more features and see a wide mix of galaxies, including many with mature features such as disks and spheroidal components.

“There have been previous studies emphasizing that we see a lot of galaxies with disks at high redshift, which is true, but in this study we also see a lot of galaxies with other structures, such as spheroids and irregular shapes, as we do at lower redshifts,” said Kartaltepe, lead author on the paper and CEERS co-investigator. “This means that even at these high redshifts, galaxies were already fairly evolved and had a wide range of structures.”

The results of the study, which have been posted to ArXiv and accepted for publication in The Astrophysical Journal, demonstrate JWST’s advances in depth, resolution, and wavelength coverage compared to Hubble. Out of the 850 galaxies used in the study that were previously identified by Hubble, 488 were reclassified with different morphologies after being shown in more detail with JWST. Kartaltepe said scientists are just beginning to reap the benefits of JWST’s impressive capabilities and are excited by what forthcoming data will reveal.

“This tells us that we don’t yet know when the earliest galaxy structures formed,” said Kartaltepe. “We’re not yet seeing the very first galaxies with disks. We’ll have to examine a lot more galaxies at even higher redshifts to really quantify at what point in time features like disks were able to form.”

In other words, it appears galaxies of all shapes, as we see them today, already existed 11-13 billion years ago, shortly after the universe was born. This defies most theories about the formation of the universe, which predict that these early galaxies would be different than today’s.

The data however at this point is sparse. Webb has only begun this work, and as Kartaltepe notes, they need to look a lot more galaxies.

5 comments

Steady decline for decades in the publication of “disruptive science”

12:16 pm

The steady decline in the publication of disruptive science

Though their definition of what makes a science paper disruptive is open to debate, a review of millions of peer-reviewed papers published since the end of World War II has shown a steady decline in such papers, as if scientists are increasingly unwilling or unable to think outside the box.

The graph to the right comes from this research.

The authors reasoned that if a study was highly disruptive, subsequent research would be less likely to cite the study’s references, and instead cite the study itself. Using the citation data from 45 million manuscripts and 3.9 million patents, the researchers calculated a measure of disruptiveness, called the ‘CD index’, in which values ranged from –1 for the least disruptive work to 1 for the most disruptive.

The average CD index declined by more than 90% between 1945 and 2010 for research manuscripts, and by more than 78% from 1980 to 2010 for patents. Disruptiveness declined in all of the analysed research fields and patent types, even when factoring in potential differences in factors such as citation practices.

The authors also analysed the most common verbs used in manuscripts and found that whereas research in the 1950s was more likely to use words evoking creation or discovery such as ‘produce’ or ‘determine’, that done in the 2010s was more likely to refer to incremental progress, using terms such as ‘improve’ or ‘enhance’.

The article that I link to above is from Nature, so of course it can’t see the elephant in the room, citing as a possible explanation “changes in the scientific enterprise” where most scientists today work as teams rather than alone.

I say, when you increasingly have big government money involved in research, following World War II, it becomes more and more difficult to buck the popular trends. Tie that to the growing blacklist culture that now destroys the career of any scientist who dares to say something even slightly different, and no one should be surprised originality is declining in scientific research. The culture will no longer tolerate it. You will tow the line, or you will be gone. Scientists are thus towing the line.

To my readers: I had intended to include this paper as part of a larger essay about the general blacklist culture that now dominates American society, but my continuing health issues make it difficult to sit at my desk for long periods. I hope to have things under control in the next few days, but until then my posting is going to continue to be limited.

12 comments

Two nearby galactic neighbors

11:46 am

Two nearby galactic neighbors
Click for full image.

Cool image time! The photo to the right, cropped, reduced, and sharpened to post here, was taken by the Hubble Space Telescope of two nearby galaxy neighbors to the Milky way.

This image from the NASA/ESA Hubble Space Telescope features the galaxy LEDA 48062 in the constellation Perseus. LEDA 48062 is the faint, sparse, amorphous galaxy on the right side of this image, and it is accompanied by a more sharply defined neighbour on the left, the large, disc-like lenticular galaxy UGC 8603. A smattering of more distant galaxies also litter the background, and a handful of foreground stars are also visible throughout the image.

LEDA 48062 is estimated to be approximately 30 million light years away. This image was part of a recent Hubble campaign to study every known galaxy within 33 million light years.

Assuming that UGC 8603 is about the same approximate distance, the utter dissimilarity between these two galaxies is quite mystifying. It is also possible that UGC 8603 is larger and much farther away.

2 comments

Musk: SpaceX is now targeting late February/March for 1st orbital launch of Starship

10:01 am

According to a tweet put out by Elon Musk on January 8, 2023, SpaceX is now targeting late February/March for 1st orbital launch of the 24th prototype of Starship and the seventh prototype of Superheavy.

The testing in 2022 has not gone as smoothly as hoped, and is the reason no launch occurred last year:

Super Heavy B7 first left SpaceX’s Starbase factory in March 2022 and has been in a continuous flux of testing, repairs, upgrades, and more testing in the nine months since. The 69-meter-tall (~225 ft), 9-meter-wide (~30 ft) steel rocket was severely damaged at least twice in April and July, requiring weeks of substantial repairs. But neither instance permanently crippled the Starship booster, and Booster 7 testing has been cautious but largely successful since the rocket’s last close call.

Following its return to the OLS [orbital launch site] in early August, Super Heavy B7 has completed six static fire tests of anywhere from one to fourteen of its 33 Raptor engines. It has almost certainly dethroned Falcon Heavy to become the most powerful SpaceX rocket ever tested. And on January 8th, 2023, SpaceX rolled the rocket back to Starbase’s orbital launch site for the seventh time. According to statements made by CEO Elon Musk and a presentation from a NASA official, the last major standalone test between Booster 7 and flight readiness is a full 33-engine static fire. Together, B7’s 33 Raptor 2 engines could produce up to 7600 tons (16.7 million lbf) of thrust at sea level, likely making Starship the most powerful rocket stage in the history of spaceflight.

I had read speculation earlier that it was impossible for SpaceX to do a full 33-engine static fire test because the OLS could not hold the rocket down. That now appears to be incorrect.

Musk’s tweet and proposed schedule should also not be taken with great seriousness. He routinely sets ambitious targets merely to keep the pace fast, even if those targets are not met.

11 comments

Decision on leaking Soyuz and its replacement to be made by Russia on January 11th

9:52 am

According to Russian space reporter Anthony Zak, Russia now says it will make its final decision on replacing the leaking manned Soyuz capsule on ISS January 11. Zak added this:

According to unofficial reports, the damaged spacecraft would return to Earth without crew, while the Soyuz MS-23 spacecraft would be launched in February 2023 piloted by a single cosmonaut Oleg Kononenko. His crew mates Nikolai Chub and Andrei Fedyaev would remain on the ground to free return seats for the two Russian members of the stranded Soyuz MS-22 crew. NASA astronaut Frank Rubio, who also traveled to the ISS on Soyuz MS-22, would return to Earth aboard a US Dragon vehicle, according to that scenario. On Jan. 9, 2023, Roskosmos denied that such a plan had been approved.

I have strong doubts about these “unofficial reports.” First, there would be no reason to fly the Soyuz manned, as it can do everything automatically, just like a Progress freighter. Second, there are serious safety issues about flying Rubio home as an extra passenger on Dragon. More likely someone in Russia wants to tweak some noses by suggesting Russia considers its own astronauts more valuable than the American.

Expect Russia to announce that the new Soyuz will arrive unmanned in February, and bring all three men home.

14 comments

China launches twice today to start its 2023 year

9:42 am

China today launched twice with two different rockets from two different spaceports.

First, a Long March 7 rocket took off from its coast Wenchang spaceport, placing three satellites into orbit. Few details were released about the satellites, other than they were being used for various tests of new technology.

Second, the Chinese pseudo-company Galactic Energy used its military-derived solid fueled Ceres-1 rocket to place five smallsats into orbit from China’s interior Jiuquan spaceport. Once again, little information was released about the satellites.

At this moment China leads SpaceX 2 to 1 in the 2023 launch race. However, there are three more U.S. launches planned for today. First Virgin Orbit hopes to finally launch from Cornwall. You can watch the broadcast here.

Then SpaceX has two launches from opposite coasts within an hour, first launching a batch of Starlink satellites from Vandenberg at 9:15 pm (Pacific), then following with a launch from Kennedy of a batch of OneWeb satellites.

One comment

January 6, 2023 Quick space links

1:19 pm

Courtesy of Jay, BtB’s stringer. I am still under the weather, so this might be the last post of the day.

 

  • Anthony Zak’s predicts major additional cuts in Russia’s space program

    • This only confirms what I have been saying for about a decade, since Putin consolidated the entire space industry into a single government-controlled corporation and thus ended all competition. His war in the Ukraine has only underlined his poor judgment. These cuts also continue the downward budget spiral for Roscosmos that has been ongoing for about a decade.

 

3 comments

General Atomics wins Air Force contract to build technology test lunar satellite

10:35 am

General Atomics yesterday announced that it has been awarded an Air Force Research Laboratory (AFRL) contract to build a satellite to test a variety of technologies in near lunar space.

The AFRL Oracle spacecraft program is intended to demonstrate advanced techniques to detect and track objects in the region near the Moon that cannot be viewed optically from the Earth or from satellites in traditional orbits such as geosynchronous earth orbit (GEO). The anticipated launch date for the Oracle spacecraft is late 2025.

While this is good business for General Atomics, the company is not selling its product to the Air Force, but building what the Air Force wants, making the spacecraft government owned. This is how the space industry functioned in the United States for almost a half century after Apollo, generally accomplishing little for great cost. Much better in the long run if the military bought this kind of product from private companies, who developed it for profit and for sale not just to the military.

5 comments

Private lunar rover to fly on private lunar lander

10:24 am

Yaoki deployed from Nova-C
Yaoki deployed from Nova-C

The Japanese based robot company Dymon has now purchased payload space on Intuitive Machines second lunar lander, Nova-C, in order to fly its own lunar rover, dubbed Yaoki, to the Moon.

Yaoki is expected to be flown to the lunar south pole on board Intuitive Machines’ Nova-C lunar lander in the second half of 2023. After landing, Yaoki is expected to deploy from Nova-C to demonstrate Dymon’s lunar mobility technology designed by its Founder and Chief Executive Officer, Shin-ichiro Nakajima.

The agreement with Dymon leverages Intuitive Machines’ Lunar Access Services and Lunar Data Services business segments to land the Yaoki rover on the Moon and control it via secure lunar communications.

The main passenger on this mission is NASA, but Inituitive Machines is free to make money by selling payload space to others. The graphic, from the press release, is intriguing, as it does not show how the rover will be deployed.

3 comments

Impulse’s first demo space tug scheduled for launch

10:14 am

Impulse Space announced on January 4, 2023 that it has now scheduled the launch of its first demo space tug, Mira, for the fourth quarter of 2023.

Impulse Space said its LEO Express-1 mission, using a transfer vehicle it is developing called Mira, is manifested for launch on SpaceX’s Transporter-9 rideshare mission currently scheduled for launch in the fourth quarter of 2023. LEO Express-1 will carry a primary payload for an undisclosed customer.

Barry Matsumori, chief operating officer of Impulse Space, said in an interview that the mission can accommodate additional payloads, like cubesats. The mission profile is still being finalized, but he said the vehicle, after making some initial deployments, may raise its orbit, then lower it to demonstrate operations in what’s known as very low Earth orbit, around 300 kilometers.

After this demonstration flight the company has plans for additional flights in 2024. This tug will then join a growing fleet of companies offering this orbital transport capability to cubesats.

3 comments

Virgin Orbit’s launch from Cornwall finally scheduled for January 9th

9:54 am

The first orbital launch from the United Kingdom has finally been scheduled, with Virgin Orbit’s 747 taking off from an airport in Cornwall on January 9, 2023 and carrying its LauncherOne rocket with 9 satellites.

Monday’s mission opportunity has been purchased by the US National Reconnaissance Office and is being used to advance a number of satellite technologies of security and defence interest to both the American and British governments. But there are also civil applications being taken up on the flight – and a number of firsts, such as the first satellite built in Wales and the first satellite for the Sultanate of Oman.

The UK’s Civil Aviation Authority [CAA], which regulates commercial spaceflight in the UK, said on Thursday that all nine spacecraft on the manifest had now been licensed. Virgin and Spaceport Cornwall received their launch licences before Christmas.

The launch was originally planned for sometime in the summer, but delays in obtaining the launch permits from the CAA pushed it back a half year. That unexpected and unnecessary delay now threatens the very existence of Virgin Orbit, as the company could do no other launches as it waited and thus earned nothing.

3 comments

Virgin Orbit completes $37 million stock sale

3:18 pm

It appears that Virgin Orbit has just completed a $37 million sale of new common stock, valued at $0.0001 per share, and equal to about 10% of the company.

Hat tip to stringer Jay, who writes, “To me, it is like V.O. is printing money. They have already lost most of the value of the original stock, they are losing about $20 million a quarter, and they just raised $37M.”

Virgin Orbit had planned in 2022 about eight launches. It completed two, and then got blocked by the UK bureaucracy, completing no more launches for the rest of year while it waited months for permits to launch from Cornwall. During that time it could not launch its other customers because it only had one 747 in its fleet to launch its rocket.

No launches means no income. To keep the company afloat Branson has had his larger company Virgin Group transfer first $25 million and then another $20 million to Virgin Orbit. This stock sale appears to be another effort to keep Virgin Orbit above water.

The endless and unexpected delays getting permits to launch from Cornwall now suggests that some people in the UK government might not like Branson, and took this opportunity to sabotage him. Pure speculation I know, but not beyond the realm of possibility.

7 comments

The dry and dusty equatorial regions of Mars

1:50 pm

The dry cratered highlands of Mars
Click for full image.

Cool image time! The photo to the right, rotated, cropped, and reduced to post here, was taken on October 2, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows a cluster of craters filled with ripple dunes.

The color strip tells us something [pdf] about the surface materials here. The reddish-orange in the craters is thought to be dust. The greenish terrain above the craters is likely coarse rock or bedrock, covered with a veneer of dust.

There is no ice here, just dust that over time has become trapped in the craters and cannot escape. And though there is also dust on the surrounding terrain, there is not that much. The craters themselves are likely very ancient, based on their shape and the eroded condition of their rims.

» Read more

One comment

Cornell confirms its plan to punish students for disrupting Coulter speech

11:26 am

The modern dark age: Only days after a speech by Ann Coulter on November 9, 2022 at Cornell University was disrupted by protesters, the president of Cornell University, Martha Pollack, apparently confirmed the university’s stated public intention to punish the students involved.

Pollack confirmed during a Nov. 15 assembly meeting that the students, who were warned and escorted from the event for preventing Coulter from speaking, would be referred to the Office of Student Conduct” who would then assign “punishments.”

“I will just be honest, I think this was a really stupid move,” Pollack said of the protest in an audio recording obtained by The Cornell Review. “Ann Coulter’s basically irrelevant at this point… and this is exactly what she wanted.”

If you click on the link to the audio recording and go to 18:22, you can hear the question and Pollack’s answer. It is very clear that both she and the questioner want to support free speech and wish to prevent future such disruptions from silencing speakers at Cornell. As Pollack states:
» Read more

12 comments

Voyager signs deal with Airbus to build its private space station

8:58 am

Voyager Space, the division of Nanoracks that has a contract with NASA for building one of four private space stations, has now signed a deal with Airbus, which will provide Voyager additional technical support.

It appears this deal is going to give Europe access to at least one of those American stations, once ISS is gone.

“We are proud to partner with Airbus Defence and Space to bring Starlab to life. Our vision is to create the most accessible infrastructure in space to serve the scientific community,” said Dylan Taylor, Chairman and CEO of Voyager Space. “This partnership is unique in that it engages international partners in the Commercial Destinations Free-Flyer program. Working with Airbus we will expand Starlab’s ecosystem to serve the European Space Agency (ESA) and its member state space agencies to continue their microgravity research in LEO.”

Unlike ISS, where profit was not a motive, Voyager has to make money on its Starlab space station. If Europe wants in, it needs to provide Voyager something, and this deal is apparently part of that contribution. I also suspect that high level negotiations occurred within NASA, ESA, and Voyager to make this deal happen so that Europe would continue to have access to at least one of the American stations.

Leave a comment

Updates on India’s space effort

8:46 am

It appears that India’s effort in space is evolving rapidly, based on several news stories today.

First, the Indian space agency ISRO signed a deal with Microsoft, whereby the software giant will provide support to private Indian space start-ups.

As part of a memorandum of understanding that Microsoft has signed with the Indian Space Research Organization, the firm will also provide space tech startups with go-to-market support and help them become enterprise ready, it said.

Startups handpicked by ISRO will be onboarded to Microsoft for Startups Founders Hub platform, where they will receive free access to several tools and resources. These tools include help with building and scaling on Azure, as well as GitHub Enterprise, Visual Studio Enterprise, Microsoft 365 and Power BI and Dynamics 365. [emphasis mine]

The highlighted phrase indicates once again that there is an aggressive turf war going on in India about who will control the aerospace industry. Similar to the battles that occurred at NASA in the 00s and 10s, there are people within ISRO who do not wish to cede their power to an independent private industry, and are doing whatever they can to block the Modi government’s effort to create such an independent industry.

In the end, as long as Modi government stands firm, this effort will fail. Private companies will increasingly succeed, and that success will feed the transition from a government-run industry to an independent and competitive one.

In other stories from India:
» Read more

2 comments

January 4, 2023 Quick space links

2:57 pm

Courtesy of BtB’s stringer Jay.

 

 

4 comments

Backlash against MIT’s blacklisting of teacher forces it to adopt Free Speech Resolution

1:52 pm

MIT: unsure of its support of free speech

Today’s blacklist story is really a follow-up on an earlier story from November 2021. At that time MIT had cowardly bowed to the demands of the intolerant left and cancelled a lecture on planetary science by a planetary scientist, Dorian Abbott, merely because Abbott had also posted videos on line advocating the radical idea of free speech.

This action by MIT however did not go unnoticed, and in fact produced an aggressive backlash from both alumni and faculty members. The alumni withdrew their financial support to the school, while a group of 73 faculty members signed a letter demanding the school support free speech.

The faculty suggest[ed] the adoption of the Chicago Statement, which states, in part: “[T]he University is committed to free and open inquiry in all matters, it guarantees all members of the University community the broadest possible latitude to speak, write, listen, challenge, and learn,” and that “it is not the proper role of the University to attempt to shield individuals from ideas and opinions they find unwelcome, disagreeable, or even deeply offensive.”

Out of this effort the MIT Free Speech Alliance was formed, aimed at forcing these changes at MIT.

Now, less than two months later, it appears that this effort has borne fruit. » Read more

14 comments

Drainage out of a Martian crater

12:42 pm

Drainage out of a Martian crater
Click for full image.

Today’s cool image to the right, rotated, cropped, reduced, and sharpened to post here, not only gives us another example of a Martian geological feature that is unique to Mars and whose origins are not yet understood, it also shows what appears to have once been a lake-filled crater that over time drained out to the east through a gap.

This picture was taken on October 14, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). The inexplicable geology is called brain terrain, and it fills the floor of the crater on the picture’s left side. The rim shows a gap, from which a meandering channel continues downhill to the east. The lake inside the crater might not have been liquid water, but ice. The channel might not have been formed by flowing water, but by a glacial flow downhill.

What makes this glacial evidence especially interesting is that it is located in a very different part of the Martian mid-latitudes.
» Read more

One comment
1 … 154 155 156 157 158 … 912