Year: 2020

A host of new solar systems

11:20 am

A gallery of baby solar systems

Worlds without end: Astronomers this month released a large collection of images taken during the past four years by the Gemini South Telescope in Chile of young stars that also have debris disks and are likely solar systems in the process of forming.

The image to the right, reduced slightly to post here, is only a sampling of the 26 disk systems found out of 104 young stars photographed. Go to the link to see some higher resolution examples.

Of the 26 images of debris disks obtained by the Gemini Planet Imager (GPI), 25 had “holes” around the central star that likely were created by planets sweeping up rocks and dust. Seven of the 26 were previously unknown; earlier images of the other 19 were not as sharp as those from GPI and often didn’t have the resolution to detect an inner hole. The survey doubles the number of debris disks imaged at such high resolution.

“One of the things we found is that these so-called disks are really rings with inner clearings,” said Esposito, who is also a researcher at the SETI Institute in Mountain View, California. “GPI had a clear view of the inner regions close to the star, whereas in the past, observations by the Hubble Space Telescope and older instruments from the ground couldn’t see close enough to the star to see the hole around it.”

The data strongly confirms most theories about planet formation in these debris disks, as one of the youngest stars did not have any gaps in its disk, suggesting no larger bodies had yet formed to clear out a region.

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Appeals court orders hack judge to dismiss Flynn case

10:20 am

The DC Court of Appeals has ordered Democratic Party hack judge Emmet Sullivan to grant the Justice Department’s request to dismiss its case against former national security adviser Michael Flynn.

A three-judge panel on the U.S. Circuit Court of Appeals for the District of Columbia, in a 2-1 ruling, said the department’s decision to abandon the case against Flynn settles the matter, despite Flynn having reached a deal with prosecutors from special counsel Robert Mueller’s office to plead guilty to making false statements in connection with a now-discredited FBI probe into whether the 2016 Trump campaign colluded with Russia.

Having lost his prosecutor, Sullivan had tried as judge to take on that role himself to keep the case going. Such actions by a judge are beyond the pale, since judges are supposed to be the neutral arbiter in any legal proceeding. By taking sides in this unprecedented manner Sullivan should be impeached and removed from office. Don’t count on it however.

Note too that Sullivan was also the judge who managed the whitewash in the Awan case, allowing that guy to skate free despite clear evidence Awan acted as a spy for Pakistan while working as the IT expert in a number of Democratic congressional offices.

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Made in Space purchased by venture capital company Redwire

10:06 am

Capitalism in space: Made in Space, which has specialized in developing 3D printing in space on ISS and elsewhere, has been acquired by a company dubbed Redwire that was created by a venture capital company.

AE Industrial Partners, a private equity firm, formally established Redwire at the beginning of June by combining two companies it had acquired, Adcole Space and Deep Space Systems (DSS). Both companies are best known as suppliers of spacecraft components and engineering services, although DSS has also developed a robotic lunar lander and is part of NASA’s Commercial Lunar Payload Services program.

“What we wanted to do with Redwire is take some of the traditional space heritage from the small, agile and innovative companies out there like Adcole and DSS and combine them with a true innovator,” said Peter Cannito, chief executive of Redwire, in an interview.

Made In Space, he argued, is that innovator. “The things that they’re doing are things that have never been done and really have the potential to change the economics of space,” he said. “That filled a key gap in our strategy.”

Though the companies under Redwire will for now operate separately, eventually they will combine under the Redwire name. Note too that the head of Made in Space is now the CEO of Redwire while its chief engineer is now Redwire’s chief technology officier, so this acquisition appears more like a partnership between companies that helps them all, rather than an acquisition.

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SpaceX tests 7th Starship test prototype to failure

9:53 am

Capitalism in space: As they had planned, SpaceX has done a tank pressure test of its seventh Starship prototype to failure, destroying the prototype.

This was actually the second test to failure for this tank, which is testing a new stainless steel alloy. The first had only sprung a leak that could be repaired.

Deemed 304L, the type of steel is still readily available off the shelf and only 10-20% more expensive than the 301 alloy SpaceX has used to build all Starship prototypes up to SN7. The biggest change it brings to the table is improved ductility (malleability), particularly at the cryogenic temperatures Starship’s tanks will often be held at. By reducing brittleness, Starships built out of 304L steel should be able to fail far more gracefully by developing stable leaks instead of violently decompressing. In fact, the very same test tank destroyed on June 23rd demonstrated that capability perfectly when it sprung a leak during its first pressure test on June 15th.

During its first cryogenic pressure test with liquid nitrogen, SpaceX CEO Elon Musk revealed that the SN7 test tank managed to reach 7.6 bar (~110 psi) before it began to leak – technically satisfactory for orbital Starship launches with an industry-standard 25% safety factor. Thanks to the general flexibility of steel, including the new 304L alloy SN7 was built with, SpaceX was able to simply repair the leak it identified, readying the test tank for a second cryogenic pressure test barely a week later.

Below the fold are two videos showing this second failure. Unlike earlier tests using different alloys, the tank does not go flying hundreds of feet into the air. The rupture seems more gentle, if I can use such a word for such a failure.

They have another tank ready to go, so testing should proceed quickly even after this test failure. And they also are prepping the full scale #5 Starship prototype for testing, which if all goes well will include actual test hops.
» Read more

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Relativity Space gets Iridium launch contract

9:28 am

Capitalism in space: The new rocket company Relativity Space has won a launch contract to put six Iridium satellites into orbit.

The operational Iridium NEXT constellation, the second generation of Iridium communications satellites, was completed in January 2019. Eight batches of satellites were launched on eight SpaceX Falcon 9 missions from SLC-4E at Vandenberg Air Force Base. This placed a total of 75 satellites into polar low Earth orbits, 66 of which formed the operational constellation. The other nine serve as in-orbit spares in the event of an issue with any of the primary satellites.

There are six additional spare satellites that have been built for Iridium by Thales Alenia Space and are currently in storage on Earth. These are the satellites that will be launched onboard Relativity Space’s Terran 1 rocket, should the need arise. Up to six launches, occurring no earlier than 2023, would occur on an as-needed basis as determined by Iridium.

This deal is interesting in that Relativity Space has not yet launched its rocket, which it touts as the first rocket built entirely by 3D printing. For Iridium to pick them for a launch so far in the future and of satellites that are merely back-ups to their main constellation suggests that the satellite company got a very good deal on price. Iridium probably did this also to help a new rocket company and thus increase competition in the launch industry. It also probably has the right to back out should the rocket company have difficulties getting its new rocket off the ground.

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Michael Mann finally loses in DC court

9:16 am

It took almost a decade, but the DC Superior Court has finally ruled against Michael Mann in his lawsuit against Rand Simberg and Mark Steyn.

Mann had sued them for libel because they criticized his incompetent and fraudulent global warming research. They demanded evidence of damages, the court agreed and ordered Mann to produce that evidence. He has refused (for almost a decade) and the court has now finally decided that because of his refusal he must pay all the court courts, including Simberg’s and Steyn’s.

Will he pay? Steyn notes what happened when Mann lost in a Canadian court:

I speculated back in October whether Mann, a loser and a liar, would also prove a scofflaw and a deadbeat. Yes, he is. It is ten months since he lost at the BC Supreme Court and, despite Mr Justice Giaschi’s order, Doctor Fraudpants has yet to pay Tim Ball a penny. So he’s a fraudulent plaintiff in every respect. This scumbag has financially ruined Dr Ball, lost at trial, and refuses to pay up. Mann’s conduct is appalling: it’s no wonder so few climate scientists are willing to defend him.

It will be instructive whether Mann defies a U.S. Court as well. I suspect if he does Simberg and Steyn will use the law to put liens on Mann’s assets. In normal times I would have no doubt this would work. Nowadays I sadly have concerns.

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Astronomers claim discovery of six exomoons

9:03 am

The uncertainty of science: Astronomers are now claiming they have detected evidence of the existence of six exomoons orbiting different stars with transiting exoplanets.

“These exomoon candidates are so small that they can’t be seen from their own transits. Rather, their presence is given away by their gravitational influence on their parent planet,” Wiegert said.

If an exoplanet orbits its star undisturbed, the transits it produces occur precisely at fixed intervals.

But for some exoplanets, the timing of the transits is variable, sometimes occurring several minutes early or late. Such transit timing variations – known as TTVs – indicate the gravity of another body. That could mean an exomoon or another planet in the system is? affecting the transiting planet.

What they have basically done is applied the technique used to identify exoplanet candidates when the planet does NOT transit the star (the wobble caused by gravity and indicated by spectral changes), and looked to see if they can see the same variations in these exoplanets.

This is fun stuff, but it is so uncertain as to be almost laughable. If you read the press release closely, you will discover that their work has been submitted for publication, but has not yet been even peer reviewed.

Their concept is good, but I would not pay much attention to these “results.”

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Ocasio-Cortez wins primary with 70% of vote

9:49 pm

They’re coming for you next: Proudly communist Alexandria Ocasio-Cortez (D-New York) today won her Democratic primary in New York, garnering 70% of the vote.

I know that many conservatives believe that the madness of the past four months will finally convince voters that it is time to reject the Democratic Party. I have seen no evidence of this. Instead, what I see is a Democratic voting block that remains set in concrete, immune to any facts or ideas that challenge its position. And it has remained so my entire life.

This victory by Ocasio-Cortez illustrates this. Despite her campaign to kick Amazon out of New York (costing her district tens of thousands of jobs), despite her clear lack of coherent knowledge of history or science, despite her Marxist agenda (as very well illustrated by her Green New Deal), and despite her generally hateful and racist rhetoric towards those who disagree with her, the voters in her district want her, and voted overwhelmingly for her.

In New York there is no viable Republican Party. Ocasio-Cortez has essentially won another two years in office tonight, as well as an endorsement of her race-based policies.

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Do high water and design flaws threaten China’s Three Gorges Dam?

7:00 pm

Heavy rain has caused flooding and a major overload to China’s massive Three Gorges Dam, and a Chinese hydrologist is now warning the dam, which he claims has design flaws, could fail at any time.

Rather than commenting on the validity of the images showing the dam’s warping a year ago, Wang said a more serious concern is the cracks and substandard concrete discovered during its construction. He said a failure of the dam would have catastrophic consequences for individuals residing in the lower reaches of the Yangtze River and that they should prepare for evacuation as soon as possible, reported CT Want.

In his interview with Radio France Internationale, the Chinese water expert also criticized the Chinese government and state media for refusing to acknowledge the potential danger of the reservoir. He said that scientists who have spoken the truth have been criminalized by Beijing, resulting in a society with no communication.

According to Chinese stated-owned CNTV, water inside the Three Gorges Dam continues to accumulate and has risen two meters above its flood-prevention level. Although the dam has been hailed by Beijing as one of the greatest engineering achievements in human history, its structural integrity continues to be questioned.

The dam was only completed in 2009, after decades of planning and construction. If it fails it will be a disaster for China and its communist government, much worse that the Wuhan flu has been.

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More strange terrain in the Martian “Death Valley”

2:39 pm

More strange terrain in Hellas Basin
Click for full image.

Today’s cool image, rotated cropped, and reduced to post here, might show what the science team for the high resolution camera of Mars Reconnaissance Orbiter (MRO) have labeled “strange banded terrain”, but anyone who has spent any time perusing images of Hellas Basin, what I have labeled the basement of Mars because it has the lowest elevation on the planet, will recognize the features.

They might be inexplicable, but for Hellas Basin they are entirely familiar. Just take a look at some of my earlier posts:
» Read more

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Perseverance: update on launch rehearsal and helicopter

11:25 am

Two news stories today about the launch of the United States’ next Mars rover, Perservance.

First, ULA yesterday successfully completed a dress rehearsal countdown with the Atlas 5 rocket that will launch Perseverance on July 20 at 9:15 am (Eastern)..

The rover will be mounted onto the rocket at the end of this week.

Second, JPL provided this press release describing how Perseverance’s test helicopter Ingenuity will be deployed on the Martian surface, where it will then test to see if such helicopters will work in the Martian atmosphere.

Sixty Martian days (dubbed sols) after landing in Jezero Crater on February 18, Perseverance will find a nice large flat area and deploy the helicopter six sols later. The helicopter will then begin its 30-sol test program. If it is found to work, future rovers will almost certainly be equipped with such helicopters, acting as scouts able to go places the rover cannot.

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