Year: 2018

Trump revokes Brennan’s security clearance

2:39 pm

As threatened last week, President Trump today revoked the security clearance for former CIA director and anti-Trump CNN talking head John Brennan.

President Trump on Wednesday revoked the security clearance of former CIA director John Brennan, citing his “erratic conduct and behavior.” White House press secretary Sarah Huckabee Sanders, reading a statement from the president, said Mr. Brennan “leveraged his status as a former high-ranking official” to make false charges against the administration.

Mr. Trump’s statement began, “As the head of the executive branch and commander-in-chief, I have a unique constitutional responsibility to protect the nation’s classified information, including by controlling access to it. Today in fulfilling that responsibility, I’ve decided to revoke the security clearance of John Brennan, former director of the Central Intelligence Agency.”

The president said Mr. Brennan’s actions have “exceeded the limits of any professional courtesy.”

I’m not sure what difference this will make, as it seems a large percentage of the people who work for the CIA are as partisan as Brennan, will gladly leak any information to him that might harm Trump, and know that they likely face no consequences because the law seemingly does not apply to those allied with the Democrats.

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Cryptic terrain in Martian high southern latitudes

12:09 pm

Cryptic terrain in Reynolds Crater near Mars south pole

Cool image time! The image on the right is a small cropped section from a larger image taken of the floor of Reynolds Crater, near the margins of the Martian southern polar carbon dioxide icecap.

The image was part of the August 1, 2018 image release from the high resolution camera on Mars Reconnaissance Orbiter (MRO) and was taken on July 5, 2018. Because that was during the peak of now clearing global dust storm, a large majority of MRO’s images were obscured. Only images taken at high latitudes appeared clear and sharp.

The image link, which has no caption, calls this “cryptic terrain.” Since this is at the margin of the polar cap, the white areas are almost certainly still-frozen dry ice. The white strip down the center of the image appears to be a low drainage gully, made even more evident on the full image.

What are the dark spots however? These are probably related to the dark spiders that appear wherever the carbon dioxide starts to melt and evaporate into gas, releasing the darker dust from below to coat the surface. The dark spots in this image are probably that same darker dust, but why it is scattered about as spots and splotches is a mystery. It does appear that the dark areas more completely cover the higher terrain, but why and if so is definitely unclear.

Back in 1999 I attended a press conference just prior to the failure of Mars Polar Lander. One of the mission’s investigators explained that, based on the orbiter images available at the time, they expected the lander to see some very weird land forms once it reached the surface, shaped in ways that are not seen on Earth. Unfortunately, contact with the spacecraft was lost just before it entered the Martian atmosphere, and was never recovered.

This image however remains me of that scientist’s lost expectation. The seasonal growth and retreat of the Martian icecaps will likely create some strange geology, which is only hinted at in this particular MRO image.

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A different type of color scale for maps that the color-blind can read

11:34 am

Scientists have devised a different type of color scale for scientific maps that makes them more readable for the color-blind.

Data visualizations using rainbow color scales are ubiquitous in many fields of science, depicting everything from ocean temperatures to brain activity to Martian topography. But cartographers have been arguing for decades the “Roy G. Biv” scale makes maps and other figures difficult to interpret, sometimes to the point of being misleading. And for the those with color blindness, they are completely unintelligible.

Now scientists at a U.S. Department of Energy laboratory have developed a color scale that is mathematically optimized to be accurate for both color blind people and those with normal vision. The scale was described Wednesday in a new study in PLOS ONE. “People like to use rainbow because it catches the eye,” says lead author Jamie Nuñez, a chemical and biological data analyst at the Pacific Northwest National Laboratory (PNNL). “But once the eye actually gets there and people are trying to figure out what’s actually going on inside of the image, that’s kind of where it falls apart.”

Ditching this multicolored scale may even save lives. Harvard University researchers found that when traditional rainbow-colored 3-D computer models of arteries were replaced by 2-D models using a red-to-black color scale (pdf), doctors’ accuracy in diagnosing heart disease jumped from 39 percent to 91 percent.

For planetary scientists, changing from the rainbow scale will be difficult. Topography maps especially have for almost a century have shown low regions as blue with high regions as red. This is what scientists, and even ordinary people, have come to expect.

Still, to make these maps understandable to the colorblind seems smart. I wonder if the idea will catch on.

Hat tip from reader Milt Hays Jr.

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A review of yesterday’s primaries

10:50 am

Link here. The results, like last week, are inconclusive as to indicating what might happen in November. The only clear pattern is the continuing increase in the American political divide. Pro-Trump candidates seemed to win more Republican primaries, but radical leftist candidates seemed to win more Democratic primaries.

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Christian baker files lawsuit against Colorado for continuing harassment

10:32 am

Fascist Colorado: Despite a victory in the Supreme Court allowing him to refuse to back cakes with political themes he disagrees with, the Christian baker in Colorado has been forced to file another lawsuit against the state’s Civil Rights Commission for continuing harassment.

On the same day the high court agreed to review the Masterpiece case, an attorney named Autumn Scardina called Phillips’ shop and asked him to create a cake celebrating a sex transition. The caller asked that the cake include a blue exterior and a pink interior, a reflection of Scardina’s transgender identity. Phillips declined to create the cake, given his religious conviction that sex is immutable, while offering to sell the caller other pre-made baked goods.

In the months that followed, the bakery received requests for cakes featuring marijuana use, sexually explicit messages, and Satanic symbols. One solicitation submitted by email asked the cake shop to create a three-tiered white cake depicting Satan licking a functional 9 inch dildo. Phillips believes Scardina made all these requests.

Scardina filed a complaint with the civil rights commission, alleging discrimination on the basis of gender identity. The matter was held in abeyance while the Supreme Court adjudicated the Masterpiece case.

Three weeks after Phillips won at the high court, the commission issued a probable cause determination, finding there was sufficient evidence to support Scardina’s claim of discrimination. In a somewhat strange development, the probable cause finding reads that Phillips violated state law, even though the proceedings are still in a preliminary stage.

Masterpiece has filed suit against the commission for instituting these proceedings, which clearly contradict the Supreme Court ruling.

Essentially this campaign by one gay rights lawyer in league with the commission, is aimed at destroying this business, merely because of its owner’s personal religious beliefs. He gladly sells his products to anyone, he merely refuses to create cakes with political messages he disagrees with. To try to destroy him for this, using the government, is the epitome of fascism.

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Ceres’ internal structure

10:21 am

The Dawn science team has released their first artist’s concept of the interior of Ceres, based on data gathered by the spacecraft.

Using information about Ceres’ gravity and topography, scientists found that Ceres is “differentiated,” which means that it has compositionally distinct layers at different depths. The most internal layer, the “mantle” is dominated by hydrated rocks, like clays. The external layer, the 24.85-mile (40-kilometer) thick crust, is a mixture of ice, salts, and hydrated minerals. Between the two is a layer that may contain a little bit of liquid rich in salts, called brine. It extends down at least 62 miles (100 kilometers). The Dawn observations cannot “see” below about 62 miles (100 kilometers) in depth. Hence, it is not possible to tell if Ceres’ deep interior contains more liquid or a core of dense material rich in metal.

The most intriguing part of this concept is the existence of a brine layer below the crust. I suspect it is this layer that they believe is the source of the white salty brine that produces Ceres’ ice volcanoes and bright spots.

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Will SpaceX bail out Tesla?

10:13 am

Link here. There appears to an effort on Wall Street to convince SpaceX to use its significant profits to bail out failing Tesla. It is also unclear whether Musk agrees with this approach.

If SpaceX does this, it will be a very bad thing for the company’s future, throwing good money after bad. Musk might love both companies and what they are trying to accomplish, but the future of the two companies appears to be heading in opposite directions. To weigh SpaceX down with an unprofitable company that has a failing product would seriously harm SpaceX’s abilities in the future.

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An update on China’s private smallsat rocket companies

10:09 am

Link here. The article describes the most recent news from OneSpace (which recently secured $44 million in financing), Landspace (building larger rockets), and Exspace (next launch planned for September).

While these companies are structured like American private companies, in China nothing having anything to do with space is really private. None of these companies can do anything without the full approval of China’s authoritarian communist government. Unlike Russia, however, China, has decided to allow competition to drive its space industry, not central control. It is encouraging small independent operations to come up with their own ideas and to compete with each other.

In the end, they will all be co-opted by the government, but for now this policy is producing for China some real results.

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SpaceX unveils interior of manned Dragon

10:02 am

Capitalism in space: Earlier this week SpaceX unveiled the interior of its Dragon capsule, along with the suits and other details, to reporters in California.

The article at the link has some good videos showing the capsule interior as well as its touchscreen control panel. It also includes quotes from SpaceX’s president Gwynne Shotwell repeating their intention to launch the manned mission by April 2019.

“Whenever we talk about dates we’re always confident and then something crops up,” Shotwell said. “Predicting launch dates can make a liar out of the best of us. I hope I am not proven to be a liar on this one. We are targeting November for Demo 1 and April for Demo 2.”

“I would love to say that this mission is going to be like every other mission, because I want every rocket and every capsule to be reliable, but I can tell you there will be about 7000 extra sets of eyes on the build of this system, the testing of this system and all the interfaces,” Shotwell added.

I would not be surprised if there was a few months slip in that schedule. I will be surprised if it slips more than that.

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India’s prime minister: manned mission by 2022

9:43 am

The new colonial movement: Facing an election next year, India’s prime minister Narendra Modi produced his own Kennedy-like space speech today, announcing a plan to launch a manned Indian mission by 2022.

Wearing a flowing saffron turban, the Hindu nationalist leader also announced the plan to take the “Indian tricolor to space” in a manned mission that would make India the fourth nation to launch one, after the United States, Russia and China. “India is proud of our scientists, who are excelling in their research and are at the forefront of innovation,” Modi said from the ramparts of the Mughal-era Red Fort in Delhi to a crowd numbering in the tens of thousands.

“In the year 2022 or, if possible, before, India will unfurl the tricolor in space.”

He also announced a healthcare initiative that has been dubbed “Modicare.” He was elected in a landslide to replace the socialist policies of the leftwing Congress Party. He is now beginning to act like the U.S.’s establishment Republican Party, who love to mouth conservative values but advocate leftist programs to win re-election.

The question is whether the Indian people will be more like Americans of the 20th century, buying into these government programs proposed by a fake-conservative, or whether they will be more like an increasing number of Americans today, sick of too much government. I suspect the former, which will bode ill for India’s future.

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Coron Island Hopping, Palawan, Philippines

6:01 pm

An evening pause: There are so many wonderful places in this universe to see. We just don’t have time. From the youtube website:

Coron is one of the famous beautiful spots of the Philippines, located in the north of Palawan. Palawan is considered one of the best islands in the World, and Coron and the surrounding islands offer spectacular views and beautiful beaches. In this video: view on the way to Kayangan Lake (0:28), Kayangan Lake (0:32), Barracuda Lake (1:33), Twin Lagoon (2:18), Atwayan Beach (3:11), Coron town (3:54), Malcapuya Beach (4:20), Banana Island (5:26), Bulog Dos Island (5:48), view from the top of Mt Tapyas (6:15).

Hat tip Danae.

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