Category: Points of Information

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

Jupiter’s changing Great Red Spot, as seen by Juno

9:28 am

Montage of Jupiter's Great Red Spot since 2017
Click for full image.

Citizen scientist Björn Jónsson has compiled the montage to the right, reduced to post here, of the five times Jupiter’s Great Red Spot (GRS) was imaged by Juno during its repeated orbital fly-bys.

The mosaics show how the GRS and nearby areas have changed over the course of the Juno mission. The mosaics cover planetographic latitudes 4.7 to 38 degrees south.

The resolution of the source data is highly variable and this can be seen in some of the mosaics. The viewing geometry also varies a lot. Some of the images were obtained almost directly above the GRS (in particular some of the perijove 7 images) whereas other images were obtained at an oblique viewing angle (in particular the perijove 17 images).

These are approximately true color/contrast mosaics but there may be some inaccuracies in areas where the original images were obtained at a highly oblique angle. The contrast is also lower in these areas.

Some of the changes are remarkable, considering the short time involved. For example, note the appearance of the large white storm below the Spot in the third image, taken in December 2018. It wasn’t there in April 2018, and was gone by Feburary 2019. This doesn’t mean it had dissipated. Instead, the storm is in a different band which moves at a different speed than the band that the Spot is in. It has thus simply moved away.

This movement is even more remarkable when we remember that the Great Red Spot is about the width of the Earth.

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SpaceX gets 2nd boat to catch rocket fairings

9:12 am

Capitalism in space: It appears, from a Elon Musk tweet, that SpaceX has obtained a second boat to catch its rocket fairings for reuse.

Based on previous comments by Musk, the company is now on the verge of recovering and reusing about 70% of its Falcon 9 rockets during each launch. I’d say that’s pretty good, especially considering industry rocket experts have been saying for half a century that none of this was even possible or practical.

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Chandrayaan-2 successfully puts itself in route to the Moon

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Chandrayaan-2 today successfully completed its last Earth perigee burn, raising its orbital apogee so that it will enter the Moon’s gravitational sphere of influence on August 20th.

Chandrayaan-2 will approach Moon on August 20, 2019 and the spacecraft’s liquid engine will be fired again to insert the spacecraft into a lunar orbit. Following this, there will be further four orbit maneuvers to make the spacecraft enter into its final orbit passing over the lunar poles at a distance of about 100 km from the Moon’s surface.

…Subsequently, Vikram lander will separate from the orbiter on September 02, 2019. Two orbit maneuvers will be performed on the lander before the initiation of powered descent to make a soft landing on the lunar surface on September 07, 2019.

Vikram will be doing the hardest part, the landing.

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Arecibo gets $12.3 million NSF grant

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The National Science Foundation has awarded the Arecibo radio telescope in Puerto Rica a $12.3 million grant to pay for needed repairs and upgrades following the hurricane damage from 2017.

The money will pay for the following work:

  • Repairing one of the suspension cables holding the primary telescope platform, ensuring long-term structural integrity of one of the main structural elements of the telescope.
  • Recalibrating the primary reflector, which will restore the observatory’s sensitivity at higher frequencies.
  • Aligning the Gregorian Reflector, improving current calibration and pointing.
  • Installing a new control system for S band radar, which is part of the microwave band of the electromagnetic spectrum.
  • Replacing the modulator on the 430 MHz transmitter, increasing consistency of power output and data quality.
  • Improving the telescope’s pointing controls and data tracking systems.

Most of this looks to be very basic maintenance, which suggests the telescope is still very starved for funds.

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Riot police attack Hong Kong airport protesters

1:16 pm

Riot police today attacked the Hong Kong airport protesters, storming into their midst with batons and pepper spray.

CNN International reported, following the police operation that reporters witnessed at least four arrests and that officers appeared to be targeting specific people. To get through the protesters, police used pepper spray and batons to push back the crowd. According to an official statement from Hong Kong police, airport officials requested that the riot officers enter the airport to rescue a man who protesters had apprehended and accused of being an undercover police officer. The South China Morning Post also reported that the airport received a court injunction requesting police remove the protesters from the premises, though Hong Kong police did not issue an official statement to that effect and officers left without clearing out every protester.

Pro-democracy protesters shut down the airport Tuesday for the second day in a row, forcing administrators to cancel all flights, in a bid to get the China-controlled Hong Kong government to listen to their demands. Some protesters appeared to panic and target others suspected of working for the communist government after officials admitted this weekend that officers had dressed up as protesters to infiltrate the marches.

So far this attack today does not appear to be an effort to shut the protest down with violence. It appears that after extracting two men, possibly pro-China reporters, the police retreated, though the authorities are now limiting access to the airport, probably with the goal of starving the protest with a lack of new supporters.

A very sad messy situation. The Chinese want to impose its tyranny on Hong Kong. Hong Kong’s citizens want to remain free. The result are street protests that can only turn violent, one way or the other, because China’s government is very unlikely to back down.

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Amateur finds moon orbiting comet in Rosetta archive

9:46 am

In mining the Rosetta archive of images of Comet 67P/C-G, an amateur astronomer has discovered a twelve-foot-diameter chunk of material that had broken from the comet and was in orbit around it.

Modelling of the Rosetta images indicates that this object spent the first 12 hours after its ejection in an orbital path around 67P/C-G at a distance of between 2.4 and 3.9 km from the comet’s centre. Afterwards, the chunk crossed a portion of the coma, which appears very bright in the images, making it difficult to follow its path precisely; however, later observations on the opposite side of the coma confirm a detection consistent with the orbit of the chunk, providing an indication of its motion around the comet until 23 October 2015.

While it is not really unusual for their to be small objects in the coma of the the comet, orbiting it, this is apparently the largest so far found. That they missed it initially is also not surprising, considering the amount of data they were gathering in such a short time.

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NASA extends life of private BEAM module

9:39 am

Capitalism in space: Having found that Bigelow’s privately built ISS module BEAM has exceeded its design capabilities, NASA has now decided to leave it docked to ISS for at least five more years, using it as a storage bin.

BEAM cost NASA a whopping $17 million, considerably less than it has traditionally spent (a billion-plus) for its previous ISS modules, designed and built under full NASA supervision.

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Linkspace completes vertical take-off and landing test

9:29 am

China’s semi-private company Linkspace on August 9 successfully completed its highest vertical take-off and landing test flight yet, flying to a height of 300 meters.

The 8.1-meter-tall, 0.65-meter-diameter, 1.5-metric-ton rocket reached an altitude of 300.2 meters during its 50-second flight before making a powered descent and vertical landing with an accuracy of 0.07 meters, Linkspace CEO Hu Zhenyu stated on Sina Weibo, a Chinese Twitter-like service. The launch follows two tests reaching 20 and 40 meters in March and April respectively.

The latest test was carried out at a new facility in the Lenghu region of Qinghai province in the northwest of the country. Chinese magazine Future Aerospace states that the RLV-T5 is powered by five variable-thrust rocket engines which use ethanol and liquid oxygen, a propellant combination used by the German V2 rockets.

Unlike the other new semi-private Chinese commercial companies, Linkspace appears to be using liquid fueled rockets, rather than depending on military solid rocket technology. This suggests to me that this company, aggressively supervised by the Chinese government, will eventually be going for both the small and big orbital business, not just smallsats.

I also give credit to the Chinese, both their government and this company, for quickly facing reality posed by SpaceX’s capabilities and working to develop their own rocket reusability as fast as possible. In contrast, Europe, Russia, and the old American big rocket companies have mostly sat twiddling their thumbs, making believe that this capability is either irrelevant, or still impossible, even as SpaceX has taken all of their business because it can undercut their prices significantly as it repeatedly re-uses its Falcon 9 first stages.

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Blue Origin protests Air Force launch procurement process

9:12 am

Blue Origin has submitted a protest to the Government Accountability Office (GAO) yesterday about the Air Force plan to pick two launch providers now for all its satellite launches after 2026.

According to a copy of the protest obtained by FLORIDA TODAY, the ordering period for the launches would run from 2020 to 2024 and ultimately select two contractors for flights beginning in 2026.

“The most recent market research, however, indicates the total global addressable space launch market, including NSSL launches, could support three or even four U.S. launch companies,” the protest reads. “Even the Agency’s own LSP source selection support contractor – the Aerospace Corporation – predicts that the space launch market has significant potential to suffer from a launch capacity shortfall because U.S. and foreign government launches will require most of the available launch capacity.”

I couldn’t agree with Blue Origin more. The Air Force wants to limit competition in the 2020s to only two companies, which will almost certainly be ULA and SpaceX since they are the only two presently flying, when by the 2020s there might be several more companies available providing competition that can lower the price.

There is no reason for the Air Force to make this decision now. None. When they need to order these launches in the early 2020s they should open that bidding process to all comers, and pick appropriately, then. Everything about this Pentagon plan stinks, reeking of the corruption that permeates Washington. I even wonder if some people have gotten pay-offs in connection with the decision to favor only two companies. It wouldn’t surprise me. (I myself have been offered money to let military lobbying companies ghostwrite op-eds using my name, supporting this Air Force plan, offers that I very bluntly turned down.)

Also, even if Blue Origin’s protest now fails, expect whoever doesn’t get picked by the Air Force now to file lawsuits in the 2020s when they are denied the right to bid on those future launches. And expect the Air Force to then back down, as it was forced to do when SpaceX was denied the right to bid on Air Force contracts early in this decade.

One more thought: This protest suggests Blue Origin already expects to not get picked. This expectation might also explain why Jeff Bezos decided to sell more Amazon stock last week, raising almost $3 billion in capital. He might be anticipating that Blue Origin will be cut out of those Air Force contracts, and so needs more of his own money to develop its New Glenn rocket.

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ESA confirms ExoMars parachute test failure

8:56 am

You heard it hear first! The European Space Agency (ESA) today confirmed earlier stories from last week that the parachutes for its ExoMars 2020 spacecraft had failed during a high altitude drop test on August 5.

I reported this on Saturday, August 10, noting that ESA had not confirmed it. It apparently took them a week to write the press release.

This was the second consecutive test failure for these parachutes, as noted in the release.

On 28 May this year, the deployment sequence of all four parachutes was tested for the first time from a height of 29 km – released from a stratospheric helium balloon. While the deployment mechanisms activated correctly, and the overall sequence was completed, both main parachute canopies suffered damage.

Following hardware inspection, adaptations were implemented to the design of the parachutes and bags ready for the next high-altitude test, which was conducted on 5 August, this time just focusing on the larger, 35 m diameter, parachute.

Preliminary assessment shows that the initial steps were completed correctly, however damages to the canopy were observed prior to inflation, similar to the previous test. As a result, the test module descended under the drag of the pilot chute alone.

The tests occur at high altitude where the Earth’s atmosphere mimics the thin atmosphere of Mars. In both cases it appears the parachutes became damaged very early in their deployment process, possibly during deployment. This means there might be a design problem with the deployment process. It also means that both tests were unable to test the chutes themselves, as they were damaged before inflation, meaning that the engineers still do not know if they would work as intended once filled with air.

All this puts incredible time pressure on the mission, which needs to launch in the summer of 2020 to meet its launch window. There is very little time to redesign and retest these chutes. I would rate their chances of meeting that launch date as less than 50-50.

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As protesters shut down Hong Kong airport, government brings military into city

10:48 pm

Be prepared for bad news: While protesters against a new Chinese law in Hong Kong have shut the airport down, the Chinese government has begun to bring its military into the downtown area.

The initial cause of these protests is an attempt by China to impose a new extradition law on Hong Kong that would allow them to extradite people from Hong Kong into mainland China.

The changes will allow for extradition requests from authorities in mainland China, Taiwan and Macau for suspects accused of criminal wrongdoings, such as murder and rape. The requests will then be decided on a case-by-case basis.

Several commercial offenses such as tax evasion have been removed from the list of extraditable offenses amid concerns from the business community. Hong Kong officials have said Hong Kong courts will have the final say whether to grant such extradition requests, and suspects accused of political and religious crimes will not be extradited.

The government has sought to reassure the public with some concessions, including promising to only hand over fugitives for offenses carrying maximum sentences of at least seven years.

It appears that the population in Hong Kong does not trust the Chinese government that has ruled them since the British left in 1999. They fear the misuse of this law in order to arrest anyone the Chinese government doesn’t like.

The question is whether the Chinese can do in Hong Kong what they did in Tiananmen Square in 1989. Then the government moved the military in and massacred the protesters, effectively ending any political opposition to communist rule. If they do this in Hong Kong they will also end the lingering freedom in that city left over from British rule..

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OSIRIS-REx team picks four finalist sample return sites on Bennu

3:31 pm

After months of photographing and analyzing the very rocky-shrewn surface of the rubble-pile asteroid Bennu, the OSIRIS-REx team has chosen four finalist sites, one of which they will do a touch-and-go sample grab.

This fall, OSIRIS-REx will begin detailed analyses of the four candidate sites during the mission’s reconnaissance phase. During the first stage of this phase, the spacecraft will execute high passes over each of the four sites from a distance of 0.8 miles (1.29 km) to confirm they are safe and contain sampleable material. Closeup imaging also will map the features and landmarks required for the spacecraft’s autonomous navigation to the asteroid’s surface. The team will use the data from these passes to select the final primary and backup sample collection sites in December.

The second and third stages of reconnaissance will begin in early 2020 when the spacecraft will perform passes over the final two sites at lower altitudes and take even higher resolution observations of the surface to identify features, such as groupings of rocks that will be used to navigate to the surface for sample collection. OSIRIS-REx sample collection is scheduled for the latter half of 2020, and the spacecraft will return the asteroid samples to Earth on Sept. 24, 2023.

They given the four sites the names Nightingale, Kingfisher, Osprey and Sandpiper.

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Monitoring Martian pits not near Arsia Mons

2:59 pm

Second look at Hephaestus Fossae pit
Click for full image.

In reviewing the August image release from the high resolution camera on Mars Reconnaissance Orbiter (MRO), I came upon two different new pit images, the more interesting of which is highlighted on the right, cropped to post here..

Finding new pit images from MRO isn’t surprising, since the spacecraft has been photographing pits almost monthly since November (see: November 12, 2018, January 30, 2019, February 22, 2019, April 2, 2019, May 7, 2019, and July 1, 2019).

What makes these two new pit images more intriguing are their location, and the fact that both pits were previously photographed by MRO and posted on Behind the Black on June 5, 2018 and July 24, 2018. Both are located in Hephaestus Fossae, a region of fissures on the edge of the great Martian northern lowlands to the west of the great volcano Elysium Mons.

Almost all the pits from past MRO images have been found on the slopes of Arsia Mons, the southernmost of the three giant volcanoes southeast of Olympus Mons. In fact, last month I even asked the question, “Why so many pits there, and so few pits elsewhere?” The explanation from Chris Okubo of the U.S. Geological Survey, who is requesting these images, was that maybe it was due to geology, or maybe it was because we simply do not yet have enough information and might not have identified the many caves/pits elsewhere.

It appears that this same question had already been on the minds of Okubo and his partner, Glen Cushing, also of the USGS. As Okubo wrote me when I asked him about these new images:
» Read more

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Protesters allow research to resume, within limits, at other Mauna Kea telescopes

12:15 pm

How special of them! The protesters blocking construction of the Thirty Meter Telescope (TMT) have now agreed to allow limited access to Mauna Kea for the researchers and technicians for the other telescopes there.

The Maunakea Access Road remains blockaded. However, activists agreed, after the Emergency Proclamation was withdrawn, to allow all existing observatory employees, including astronomers, to access Maunakea using the Old Saddle Road and a section of unpaved lava. This route is unimproved and lined with tents, cars and people. However, pursuant to this agreement, on Wednesday, August 7, 2019 the state laid cinder and cones in an attempt to address safety concerns. The people blocking the road also agreed to allow larger vehicles to access Maunakea by going around the tent blockade. This means the vehicles will travel on the road’s shoulder.

The current process of gaining access to Maunakea requires the observatories to provide pre-arranged notification of all vehicles seeking access. To accomplish this, the people blocking the road will be provided a list of which vehicles are going up and when. This requires the observatories to contact the Office of Maunakea Management, which then contacts law enforcement, who then provides the list to the activists. The observatories are also aware that activists have been keeping a log of who goes up and down. [emphasis mine]

Essentially the protesters now run Mauna Kea, and have the right to ban anyone they don’t like from going there. This is essentially mob rule, since the law does not give them that right, and in fact has always given access rights to everyone.

The highlighted words indicate the possibility of increased risk by this mob rule. I’ve been on that road. It is gravel but well-graded. Its shoulders are not gigantic, however, and often border steep slopes and cliffs.

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NOAA revises upward its ordinary average 2019 hurricane season prediction

11:51 am

NOAA last week announced that it is revising upward its hurricane prediction for the 2019, changing it from average and ordinary to slightly higher than average and ordinary.

Seasonal forecasters with NOAA’s Climate Prediction Center have increased the likelihood of an above-normal Atlantic hurricane season to 45% (up from 30% from the outlook issued in May). The likelihood of near-normal activity is now at 35%, and the chance of below-normal activity has dropped to 20%.

The number of predicted storms is also greater with NOAA now expecting 10-17 named storms (winds of 39 mph or greater), of which 5-9 will become hurricanes (winds of 74 mph or greater), including 2-4 major hurricanes (winds of 111 mph or greater). This updated outlook is for the entire six-month hurricane season, which ends Nov. 30.

The problem with NOAA’s desire to imply that we are all going to die from massive hurricanes is twofold. First, take a look at the most recent hurricane graphs at Weatherstreet.com. NOAA’s unrevised prediction for Atlantic hurricanes was totally in the center of the average for the years from 1966 to 2009. It also was significantly below 2005, the worst hurricane year on record that was used by global warming activists to claim global warming was causing more storms that were more extreme.

The problem is that 2005 was an outlier. For almost a dozen years afterward no category 3 or more hurricanes made landfall in the U.S. and only a very few have followed since.

The newly revised prediction still predicts an average and ordinary number of hurricanes in 2019, just very slightly above the average for the past half century.

But no matter. The number will be higher! We are all going to die! We must silence anyone who disagrees because their denialism will cause more deaths!

Welcome to the coming dark age.

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Forbes censors climate article questioning human-caused global warming

10:21 am

An August 9th article at the magazine Forbes — discussing the skepticism that many scientists have about human-caused global warming — was removed today by the magazine “for failing to meet our editorial standards.”

Or to put it more accurately, they censored it for failing to follow the knee-jerk blind demands of the global-warming political movement.

The Global Warming Policy Foundation (GWPF) has now published the article in full, so that “interested readers [can] make up their own minds about the research by Nir Shaviv and Henrik Svensmark.”

Read the article. The only things unreasonable in it is the suggestion that there is a 97% consensus among climate scientists. That claim is false, as noted by the authors of the paper [pdf] where the claim comes from, in their own abstract.

We find that 66.4% of abstracts expressed no position on AGW [human-caused global warming], 32.6% endorsed AGW, 0.7% rejected AGW and 0.3% were uncertain about the cause of global warming.

What these statistics actually prove is that 66.4% of all climate scientists understand that it is inappropriate to endorse or even reject a theory, when the data is insufficient. The remaining third, whether they endorse or reject human-caused global warming, do not understand the scientific method, in the slightest.

As for the censored Forbes article, it first outlines some of the most reasonable uncertainties of science surrounding the climate, focusing most specifically on the influence of the Sun, as shown by research by Shaviv and others. Then it notes how the climate community is working to squelch such research, dishonestly, as noted by Shaviv:

Any scientist who rejects the UN’s IPCC report, as he does, will have trouble finding work, receiving research grants or publishing, he said.

I must add that I have interviewed Nir Shaviv myself in connection with several astronomy articles, and found him to be a rigorous and intelligent scientist interested only in pursuing knowledge and the truth.

The bottom line now however is that the pursuit of knowledge and truth is no longer allowed in the climate field. Step out of line and the modern global warming inquisition will move in quickly to silence you, to smash its jack-booted foot into your face.

Hat tip to one of my readers, who when he sent this article to me opened by quoting me and Scott Adams: “They’re coming for you next.” Fortunately, I have tried very hard to anticipate such attacks, which is why I created Behind the Black. This website has made me free and independent of such oppressive tyranny. The only thing that would stop me from expressing my thoughts freely would be a lack of support from my readers. Fortunately, my readers have been increasingly generous, suggesting that they like the idea of freedom and open debate.

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Environmentalist group opposes Scottish spaceport

9:38 am

An environmentalist group is working to organize opposition to the construction of a spaceport on an island in the Hebrides Islands.

The North Uist Conservation Group is concerned that the proposal would damage the coastal wilderness of Scolpaig, and tourism from nature lovers who visit the island to see otters, golden and white-tailed eagles, wading birds and the corncrake.

It is also worried about the impact on the nearby North Uist Machair, a designated Special Area of Conservation, and an area of peatland, which is a carbon sink. The RSPB bird reserve at Balranald is five kilometres from the proposed spaceport, it added.

They think a spaceport will hurt tourism? They might want to take a look at Florida in the U.S. If handled right, a spaceport will bring many more tourists to this very remote location.

As for the nearby wildlife and peat, they should take a look at Florida again. When the Kennedy Space Center was created the U.S. government also made the large surrounding territory, needed to remain undeveloped so that launches could occur safely, a gigantic wildlife preserve. That preserve has prospered magnificently in the ensuring decades, since the launches do it no harm.

Of course, these facts matter little. The people opposing this spaceport are, like the protesters in Hawaii that oppose TMT, not really interested in facts. Nor are they really interested in preserving anything. What really motivates them is the desire for power. If they aren’t in charge of something, then they must be given the power to prevent it.

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Nurse gets death threats for posing with Trump

11:24 am

They’re coming for you next: A hospital nurse who worked to save lives after the Dayton massacre this past weekend was doxxed on Twitter and has since gotten death threats for posing in a photograph with Trump

I’d like you all to meet Rita. She’s an ICU Nurse at Miami Valley Hospital. She was one of the many heroes that helped save lives in Dayton following the mass shooting.

While President Trump was visiting the hospital, he was told about her hard work. He personally approached her, thanked her and asked for a photo. She was so happy and ecstatic to meet the President.

She posted the photo online and has since received numerous death threats, harassing messages and pure bullying. As a result, she deleted her Facebook and now has to be escorted in and out of work.

The link quotes the tweet that doxxed her, which in a sense is only worsening the situation.

Much of this problem comes from twitter, where you can post anything you want completely anonymously, and if you are attacking conservatives or Republicans, face no punishment. Truly an evil company.

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Reports of another ExoMars parachute failure during test

9:09 am

Following a failure of ExoMars’ parachutes during a May test, there are now reports that a second failure occurred on August 5.

A fresh test of the parachute system for the Russian-European mission ExoMars-2020 have failed again as a structural mockup of the Russian-built lander crashed during the simulated landing, a source familiar with the test results told Sputnik.

The test with the use of a high-altitude balloon was carried out on August 5 at a Swedish Space Corporation’s test site in northern Sweden.

“Tests of the parachute system at the Esrange test site in Sweden failed. A full-size mockup of the landing module of the ExoMars-2020 Martian station crashed during the landing,” the source said.

I have seen this report in two other sites, but it has not yet been confirmed by the European Space Agency.

If these reports are true, the chances of ExoMars launching in July 2020 is likely almost nil. They haven’t even begun assembling the spacecraft, and have had two parachute failures in tests, with the second destroying the prototype used for those tests.

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Vector changes CEO, might have money issues

5:39 pm

Capitalism in space: Jim Cantrell, who had been the CEO of smallsat rocket company Vector Launch since inception, has apparently left the company.

Vector, a micro-launch company founded in 2016 to build small rockets for payloads of up to 60kg, may be in financial trouble, multiple industry sources told Ars on Friday. A spokeswoman for Vector did not comment on that. However, she did confirm the company has parted ways with its chief executive: “Jim Cantrell is no longer with Vector effective today. John Garvey has assumed the role of CEO.”

I wish this story wasn’t so, though I also admit my instincts were telling me things were going sour with the continuing delays in their test launch schedule.

Jim Cantrell was an unusual CEO, always available and open. He generously took me on personal tours of Vector facilities, twice, first in March 2017 and again in January 2019. I wish him well in whatever future endeavors he undetakes.

As for Vector, they need to get off the ground. They had had a substantial head start over many of the other new smallsat rocket companies, but that lead has now evaporated.

More information here. It appears one of their major investors might have pulled out. It also appears they have temporarily suspended operations, shuttering their offices.

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Watching the yearly vanishing of Mars’ north pole dry icecap

12:45 pm

Buzzell dunes, March 19, 2019
Click for full image.

Buzzel dunes, April 4, 2019
Click for full image.

Buzzell dunes, June 4, 2019
Click for full image.

For the northern hemisphere of Mars it is presently spring. The season began sometime in April 2019 and will last until about October, twice as long as on Earth because of the Martian year is twice as long.

During the fall and winter the permanent water-icecap, which forms the bulk of the Martian icecap, gets covered by a mantle of dry ice, settling there as a layer of carbon dioxide snow about six feet thick. With the arrival of spring that dry icecap slowly begins sublimate away entirely.

Using the high resolution camera on Mars Reconnaissance Orbiter (MRO) planetary scientists are monitoring this process, taking pictures periodically.

On June 6, 2019 I had written a detailed story describing the Martian North Pole and outlining the process by which this sublimation of the dry icecap mantle takes place.

When winter ends and the sun reappears at this Arctic location, a small percentage of that sunlight, about 10%, goes through the dry ice and warms the sand that the dry ice mantles. This in turn warms the bottom of the dry ice layer, causing this to sublimate into a gas that is now trapped.

When the pressure builds sufficiently, that gas breaks free at the weakest spots in the dry ice layer, which are either at the dune crest or at its base, or sometimes on its face where cracks form. When it does so the CO2 gas carries with it material from below, which appears dark relative to the bright dry ice on the surface. As the summer season progresses and more dry ice sublimates away, the dark smudges disappear as they slowly blend in with the now-exposed original sand surface.

The first two pictures to the right were posted in that June 6, 2019 story, showing the initial evidence of sublimation on a set of dunes that the scientists have dubbed Buzzell. Below these, I have now added the newest image of the Buzzell dunes, taken on June 4, 2019 and just released in the August MRO image dump.

When this third image was taken, spring was only about two months old. Yet, this sublimation process is clearly accelerating. You can see many more dark patches at the crests and bases of many dunes, especially in the upper left of the image. According to Dr. Candice Hansen of the Planetary Science Institute in Tucson, Arizona, who is requesting these monitoring images, by sometime in October “you’ll see how the entire spring progresses from dunes completely covered with dry ice to the summer when they are just bare sand. Then you could comment on the whole spring series.”

I fully intend to do this. No harm however in providing an interim report or two. Stay tuned to Behind the Black for future on-going and up-to-date reports on the shrinking north pole dry icecap of Mars!

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IAU approves 2nd set of Pluto names chosen by New Horizons team

8:47 am

My heart be still! The International Astronomical Union (IAU) has now officially given its glorious stamp of approval to a second set of fourteen names given by the New Horizons’ team to features on Pluto.

Several people and missions who paved the way for the historic exploration of Pluto and the Kuiper Belt – the farthest worlds ever explored – are honored in the second set of official Pluto feature names approved by the International Astronomical Union (IAU), the international authority for naming celestial bodies and their surface features.

The new names were proposed by NASA’s New Horizons team, which carried out the first reconnaissance of Pluto and its moons with the New Horizons spacecraft in 2015. Along with a short list of official names the IAU had already approved, the mission science team had been using these and other place names informally to describe the many regions, mountain ranges, plains, valleys and craters discovered during the first close-up look at Pluto’s surface. [emphasis mine]

In case you don’t get it, I am being very sarcastic above. I consider the IAU to be incredibly arrogant in its claim that it, and it alone, can approve the names given to surface features on other worlds. Initially the IAU was given the task by the astronomical community of organizing the naming of celestial bodies seen in telescopes, to reduce confusion. Somehow the IAU has expanded that responsibility to include the naming of every rock and pebble on every world in the universe.

To this I say bunk. I also know that future spacefarers in space will say the same thing, and tell the IAU to go jump in a lake. In a sense, the New Horizons team did exactly that when they made their name choices very public from the beginning, essentially telling the IAU that the New Horizons’ team is picking the names, not the IAU.

In related news, the IAU has now approved the naming convention the OSIRIS-REx team intends to use to name features on Bennu. However, in this case the IAU is doing its real job, helping to organize the naming conventions to reduce confusion.

The named features on Bennu will include several terrain classification types that the IAU also approved for asteroid (162173) Ryugu’s surface features (currently being explored by the Japanese Space Agency’s Hayabusa2 spacecraft). These include craters, dorsa (peaks or ridges), fossae (grooves or trenches) and saxa (rocks and boulders). The last of these types – saxum – is a new feature classification that the IAU introduced earlier this year for small, rocky asteroids like Ryugu and Bennu. These surface features on Bennu will be named after mythological birds and bird-like creatures, complementing the mission’s existing naming theme, which is rooted in Egyptian mythology.

The actual names the OSIRIS-REx team will chose for each unique feature will however be their choice, not the IAU’s. Though the IAU will eventually announce it has “approved” those choices, it will never really have the right to have a say in those decisions.

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OneWeb: LauncherOne too expensive

8:30 am

In asking that Virgin Orbit’s lawsuit against internet satellite manufacturer OneWeb be dismissed, OneWeb has claimed that their contract allowed for the cancellation of launches without cause, and that they have a cause anyway, which is that LauncherOne is too pricey.

In its court filing, OneWeb said the $6 million price tag for a LauncherOne mission is two to three times current market prices.

…The original contract, OneWeb claims, allowed for termination without cause, and for prior payments to apply to the termination fee. Those contract termination rules, and the fact that Virgin Orbit has yet to conduct any LauncherOne missions, invalidate Virgin Orbit’s revenue expectations, according to OneWeb. [emphasis mine]

Based on my estimate of the launch market, LauncherOne’s price is higher than others, but not by very much. I think the highlighted text is more significant. LauncherOne had announced plans to fly its first mission last summer. More than a year later that inaugural flight has still not taken place.

In the meantime, this decision by OneWeb is a boon to Russia’s space industry, especially its Soyuz rocket, as it will now get the contracts for launching the majority of OneWeb’s 648-satellite constellation.

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New Hubble image of Jupiter

5:39 pm

Jupiter as seen by Hubble in 2019
Click for full image.

The Hubble science team today released a new global image the telescope took of Jupiter on June 27, 2019. The photograph on the right is that image, reduced and cropped to post here. As noted by the press release about the Great Red Spot,

The Great Red Spot is a towering structure shaped like a wedding cake, whose upper haze layer extends more than 3 miles (5 kilometers) higher than clouds in other areas. The gigantic structure, with a diameter slightly larger than Earth’s, is a high-pressure wind system called an anticyclone that has been slowly downsizing since the 1800s. The reason for this change in size is still unknown.

A worm-shaped feature located below the Great Red Spot is a cyclone, a vortex around a low-pressure area with winds spinning in the opposite direction from the Red Spot. Researchers have observed cyclones with a wide variety of different appearances across the planet. The two white oval-shaped features are anticyclones, like small versions of the Great Red Spot.

Another interesting detail is the color of the wide band at the equator. The bright orange color may be a sign that deeper clouds are starting to clear out, emphasizing red particles in the overlying haze.

In many ways Hubble’s images of Jupiter are comparable to those taken by Juno, except that Hubble can’t zoom in as close.

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Crater on the Basement of Mars

12:05 pm

Crater in the bottom of Hellas Basin
Click for full image.

Cool image time! In the July release of images from the high resolution camera of Mars Reconnaissance Orbiter (MRO) was the image to the right, cropped to post here, showing what I suspect is a relatively young crater located in the lowest part of Hellas Basin, what I call the bottom of Mars.

Though this crater is not located at the lowest point in Hellas, it is not far off from there. What makes it important to geologists are two facts. First, there are not a lot of craters in Hellas, which helps indicate it is a relatively young feature. Second, and more important, the impact has made accessible material from below the surface, indicated by the different colors in this image. From this information they can better constrain their theories about the Basin’s formation and where it fits in Mars’s overall geological history.

Make sure you take a look at the full photograph by clicking of the image, and compare it with the earlier Hellas Basin images I posted here. The surface of Hellas appears to have a lot of flow features, as if it was laid down by volcanic activity, or by the motion of water that covered it. In either case that would explain the overall lack of craters.

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FCC streamlines and cuts fees for smallsat licensing

9:09 am

Capitalism in space: In an effort to ease its bureaucratic obstacles to private enterprise, the FCC has streamlined its licensing process for new smallsats, while cutting its licensing fees by more than 90%.

Under the optional licensing regime, which stands to take effect this year, smallsat operators with spacecraft that meet certain criteria will be able to obtain a spectrum license about twice as fast and pay only $30,000 instead of nearly $500,000. A maximum of 10 satellites at a time can be licensed under the streamline process.

…Operators will be able to use the streamlined licensing for satellites that weigh 180 kilograms or less, operate below 600 kilometers (or have propulsion) and will deorbit within six years, among other criteria.

One component of these new regulations is that they require new smallsats to never be smaller than 10 centimeters on their smallest dimension, thus essentially forbidding the launch of nanosats smaller than that.

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Video of Long March 2C grid fins used in July

9:01 am

China Central Television has released a very short video showing the grid fins used during the July 26 launch of China’s Long March 2C rocket in order to better control the descent of that rocket’s expendable first stage.

I have embedded the video below the fold. It shows the four grid fins unfolding, but not much else. It also reveals that the Chinese very clearly were inspired by SpaceX’s Falcon 9 grid fin design.

The video also gives me the impression that the Long March 2C first stage does not have any thrusters, which were SpaceX’s primary mode for controlling its first stages, the grid fins added later when they understood better the engineering required. Thus I suspect that the fins were not very successful in controlling that stage’s flight.

Nonetheless, the Chinese are doing these tests during operations, which means they are only a first step on a path to success.
» Read more

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Vector gets Air Force launch contract

8:50 am

Capitalism in space: Vector has signed its first Air Force launch contract for an orbital cubesat launch in 2021.

The Air Force must know something about Vector’s rocket development that we don’t. The company had planned a suborbital test launch for March/April, delayed it until June, and has still not flown it. These delays put the company behind its original launch schedule by a considerable amount, which originally had called for its first orbital launch in 2018.

Hopefully we shall soon see some actually progress from Vector. At the moment however their lack of launches has allowed a number of other smallsat rocket companies to gain on them from behind.

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