Behind The Black – Robert Zimmerman

June 13, 2023 Quick space links

June 13, 2023 5:07 pm Robert Zimmerman

Courtesy of BtB’s stringer Jay.

Some cumulative statistics for SpaceX’s various smallsat Transporter and rideshare launches

The total launches is 17, which have put up 676 satellites in total. To get a sense of the increasing pace of SpaceX launches, see this animation.

ULA CEO Tori Bruno claims the root cause of the Centaur test explosion has finally been identified

He says in a followup tweet that “the super thin, high performance steel skin needs to be a little thicker near the top of the dome.” They plan to retest, which I suspect is going to impact the first Vulcan launch date.

China breaks ground on third launchpad at its Wenchang coastal spaceport for its pseudo-companies

This pad is aimed at servicing “small solid rockets”, essentially former missiles that China has allowed its pseudo-companies to adapt for satellite launches.

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Today’s blacklisted American was arrested for quoting the Bible

June 13, 2023 1:51 pm Robert Zimmerman

Damon Atkins being arrested by McClure for quoting Bible
Atkins (r) being arrested by McClure for quoting Bible

They’re coming for you next: On June 3, 2023 there was a rally supporting the queer agenda in front of the Reading City Hall in Pennsylvania, partly instigated it appears by the endorsement of the city’s Democratic Party mayor, Eddie Moran. On the other side of the street were several Christians who vocally expressed their opposition to that rally.

Those Christians found themselves repeatedly harried by the police. As Matthew Wear noted, “I preached for 10 minutes or so until a tyrant cop laid hands on me and threatened to arrest me if I continued.” Soon thereafter a second Christian, Damon Atkins, began quoting the Bible in protest. That same policeman, Police Sergeant Bradley McClure, immediately arrested him.

According to an affidavit of probable cause, McClure claims that “[Atkins] was carrying a sign with a slogan written on it that showed his opposition to the event.” The video footage shows Atkins holding a sign that read “JESUS SAID GO AND SIN NO MORE.”

In the affidavit, McClure also claims that Atkins “began to yell to the people” attending the pride event. “I immediately approached him and told him that, while he was free to stand on that side of the street and hold his sign,” McClure wrote in the affidavit, “he could not cross the street nor yell comments intended to disrupt the event.” McClure added that Atkins “said he understood.”

But the video does not show Atkins agreeing to remain silent and Atkins told The Lancaster Patriot that he never agreed to McClure’s instructions.

The affidavit continues with McClure claiming that in less than a minute Atkins “resumed yelling derogatory comments to the people at the event.” The video records the only words from Atkins as “God is not the” immediately prior to McClure arresting him.

I have embedded the video taken by Wear below.
» Read more

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Rimstone dams in Mars’ youngest lava deposit

June 13, 2023 1:01 pm Robert Zimmerman

Click for original image.

Cool image time! The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on April 23, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The scientists dub the features here merely as “land forms,” probably because it is difficult to explain the origins of many of these strange features. For example, why is the half-mile-wide crater filled that knobby terrain, far different than the surrounding plains? Similarly, what caused the small meandering ridges (less than five feet high) that appear to closely resemble the cave formation called rimstone dams?

And why is this terrain so generally flat and smooth?

As usual, the overview map helps explains some of this, but not all.
» Read more

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Boeing gets NASA contract to develop new airplane wing design

June 13, 2023 10:22 am Robert Zimmerman

In its effort to reduce fossil fuel use and thus save us from being burned to death by global warming in only a decade, NASA has now awarded Boeing a contract to develop new airplane wing design that it predicts will lower fuel use by up to 30%.

The X-66A is the X-plane specifically aimed at helping the United States achieve the goal of net-zero greenhouse gas emissions by 2050. To build the X-66A, Boeing will work with NASA to modify an MD-90 aircraft, shortening the fuselage and replacing its wings and engines. The resulting demonstrator aircraft will have long, thin wings with engines mounted underneath and a set of aerodynamic trusses for support. The design, which Boeing submitted for NASA’s Sustainable Flight Demonstrator project, is known as a Transonic Truss-Braced Wing.

While developing a more efficient wing design is certainly worthwhile, having skepticism about this project is certainly reasonable. First of all, it seems somewhat strange to award Boeing such a contract at this time, considering NASA own experience with the company with Starliner, as well as that company’s problems with other government contracts for the military.

Secondly, the press release makes a big deal about the project getting an X-plane designation, an entirely superficial and PR related title that if anything suggests there is very little steak to this sizzle.

Third, it is unclear the nature of this contract. Is is cost-plus, or fixed price? The press release says NASA will “invest $425 million over seven years, while the company and its partners will contribute the remainder of the funding, estimated at about $725 million.” If cost-plus, this means nothing. Boeing will use any excuse to go over budget in order to get more money from NASA.

Finally, half a billion dollars to develop and test a new airplane wing design, using an already existing airplane, seems incredibly exorbitant. And to require seven years to build it seems ridiculously long.

All in all, I suspect the real goal of this project is to funnel tax dollars to Boeing to help keep it afloat, not to build a new green airplane.

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New House bill proposes giving FAA responsibility for monitoring space junk

June 13, 2023 10:10 am Robert Zimmerman

A just proposed House bill for reauthorizing the Federal Aviation Administration (FAA) also proposes giving that agency the responsibility for monitoring space junk.

The bill instructs the FAA to establish a program to track objects “that are potential sources of covered airborne debris” with a focus on identifying those about to reenter and could pose a risk to aircraft in airspace. That program would coordinate with the FAA’s air traffic control system to identify airspace that needs to be closed for a reentry. It would allow the FAA to establish its own space situational awareness (SSA) facilities and work with other federal agencies, companies or international organizations for data on such objects.

While the focus of the bill is tracking debris to assess airspace risks, the bill does enable additional uses of the data the FAA collects. In particular, it directs the FAA to offer “a basic level of data, information, and services” at no charge. That includes maintaining a public catalog of space objects and “emergency conjunction notifications” of such objects.

The article at the link notes that this new FAA job would also duplicate work of the Space Force, as well as a new Commerce Department office tasked with similar responsibilities. It also duplicates the same responsibilities the FCC has created for itself, outside of its statutory authority.

In other words, there is a factional turf war going on within the swamp, with each faction attempting to establish its territory and control over this work.

The result? Expect Congress to allow this duplication to go forward, funding all three efforts. As we all know, money grows on trees, and hiring as many Washington bureaucrats is the most important thing Congress can do, even if those bureaucrats don’t do anything useful.

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Japanese government adopts revised space policy emphasizing defense

June 13, 2023 10:00 am Robert Zimmerman

The Japanese government today announced a revision to its space policy, with the changes mostly focused on increasing that nation’s military surveillance and reconnaissance capabilities in space.

Though defense and security appeared to be the focus of the revision, there were hints this would be achieved through a greater use of the competitive free market.

The government also vowed to bolster collaboration between the Defense Ministry and the Japan Aerospace Exploration Agency in a bid to provide support to private companies engaged in critical space technology development, the blueprint says. By attempting to stimulate private-sector-led development in space, the government will aim to reduce costs in the face of budget constraints, it adds.

Japan has traditionally operated as the U.S. used to, by letting its space agency JAXA do and control everything. JAXA in turn has routinely hired established companies like Mitsubishi to build what it wants, while retaining all control and ownership. The result has been a moribund effort, with Japan at present having no low cost rocket that can compete on the international market for business.

Whether this new policy will allow new companies to compete with the big established players remains unknown.

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Forgotten Weapons – Girardoni Air Gun

June 12, 2023 6:01 pm Robert Zimmerman

An evening pause: The air rifle that Lewis & Clark took on their expedition to impress the American Indians they met. When I recently read their memoirs, I was baffled that an air gun existed in the early 1800s. This video shows it in detail, noting that it was actually invented in 1780 for the Austrian Army.

Hat tip Judd Clark.

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June 12, 2023 Quick space links

June 12, 2023 4:50 pm Robert Zimmerman

After a week break BtB’s stringer Jay returns!

Astra shareholders agree to reverse stock split in order to prevent its stock from being delisted

In other words, if you owned one share that share could end up being equal to somewhere between 1/5th or 1/15th of one share. The goal of such a reverse split is to raise the value of one share to higher than a dollar, the minimum the stock market was insisting on or it would delist Astra.

On June 7th astronauts on Tiangong-3 installed a new xenon tank for the propulsion system on the Tianhe module

The tank was apparently brought up on the most recent Tianzhou freighter, and transported to its proper place through the airlock on the Mengtian module.

The upper stage from 2016 North Korea rocket launch burned up over the Southern Ocean on June 9, 2023

According to the link, there are now only three North Korean objects remaining in orbit, all from launches years ago.

Stoke Space successfully completes another static fire test of its revolutionary engine design

Rather than building large engines releasing their energy through a single large nozzle, Stoke releases the energy through a ring of small nozzles. This test demonstrated the ability to adjust the thrust in different places on the ring, thus simulating the gymballing of a normal nozzle to steer the rocket.

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SpaceX launches 72 smallsats; lands a Falcon 9 1st stage for the 200th time

June 12, 2023 3:22 pm Robert Zimmerman

SpaceX today successfully launched 72 smallsats using its Falcon 9 rocket, lifting off from Vandenberg Space Force Base in California.

With this launch, SpaceX achieved a significant milestone, successfully landing a Falcon 9 first stage for the 200th time, an achievement that for more than a half century all managers and most engineers in the rocket business claimed was not only impossible, but impractical. They insisted that the first stage would not be able to be reused because of the stress of launch. SpaceX has proved these close-minded fools very wrong. This particular first stage completed its ninth mission on this flight, a number that has become very routine for SpaceX’s Falcon 9 first stages. The stage landed back at Vandenberg,

As of posting the satellites have not all deployed.

The leaders in the 2023 launch race:

40 SpaceX
22 China
8 Russia
5 Rocket Lab

American private enterprise now leads China 45 to 22 in the national rankings, and the entire world combined 45 to 38, with SpaceX by itself leading the rest of the world, excluding other American companies, 40 to 38.

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The evidence shows clearly that Biden has worked to squelch Elon Musk and SpaceX

June 12, 2023 12:41 pm Robert Zimmerman

Starship #15 about to land
Starship prototype #15, during its successful suborbital test flight in May 2021

The public concerns expressed last week by one NASA official about the regulatory delays caused by the FAA to SpaceX’s Starship/Superheavy development program illustrated once again my sense that there had been a stark change in how SpaceX was being regulated by the federal government, from the Trump to the Biden administration. Under Trump, SpaceX was moving fast, launching test flights frequently. Under Biden, all such test flights appeared to grind to a halt.

For example, it seemed to me that during the Trump administration the FAA allowed SpaceX to complete its investigations of explosions or launch failures quickly, so they could proceed as quickly to another test launch, sometimes only weeks later. After the first orbital test flight of Superheavy/Starship on April 20, 2023, however, the FAA responded quite differently, demanding the right to oversee a full investigation that it also implied would take many months.

Others have disputed this assertion. For example, space reporter Doug Messier commented about my analysis, stating that the FAA’s insistence on a lengthy investigation into the April 20, 2023 Superheavy/Starship orbital test flight failure was simply standard procedure. “I don’t think this represents any change in policy. This is how it’s been done for years,” Messier wrote. “It’s easy to scapegoat FAA as THE cause of the problem, and speculate about nefarious actions by the Biden Administration.”

Who is right? Am I being paranoid? Or is Messier being naive? As Howard Cosell used to say on Monday Night Football, “Let’s go to the videotape!” Or in this case, let’s take a hard detailed look at how SpaceX’s test program for Starship/Superheavy came to a screeching halt when Joe Biden took over the White House from Donald Trump.

From 2018, when SpaceX began first cutting metal on Starship prototypes, to May 2021, the company did eight suborbital test flights and at least six tank and static fire engine tests, with some resulting in explosive destruction. Below is a list of those tests (There were more such engine and tank tests during that time, but these were ones I could quickly find).
» Read more

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A faint irregular cloud of stars

June 12, 2023 9:06 am Robert Zimmerman

Click for original picture.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was released today by the science team of the Hubble Space Telescope. It shows an irregular galaxy thought to be about 44 million light years away.

Alongside its hazy shape, NGC 7292 is remarkably faint. As a result, astronomers classify NGC 7292 as a low surface brightness galaxy, barely distinguishable against the backdrop of the night sky. Such galaxies are typically dominated by gas and dark matter rather than stars.

Astronomers directed Hubble to inspect NGC 7292 during an observational campaign studying the aftermath of Type II supernovae. These colossal explosions happen when a massive star collapses and then violently rebounds in a catastrophic explosion that tears the star apart. Astronomers hope to learn more about the diversity of Type II supernovae they have observed by scrutinising the aftermath and remaining nearby stars of a large sample of historical Type II supernovae.

NGC 7292’s supernova was observed in 1964 and accordingly given the identifier SN 1964H. Studying the stellar neighbourhood of SN 1964H helps astronomers estimate the initial mass of the star that went supernova, and could uncover surviving stellar companions that once shared a system with the star that would become SN 1964H.

I searched but was unable to locate any 1964 images of this galaxy when the supernova was still visible, so I could not pinpoint its location in the picture. It has long since faded away.

Note that the reddish smudges scattered throughout the picture are likely galaxies so far distant that their light has shifted entirely into the reddish spectrum. This likely places them one to several billions of light years away, not millions.

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SpaceX launches another 52 Starlink satellites

June 12, 2023 12:21 am Robert Zimmerman

Just after midnight tonight (Pacific) SpaceX successfully launched another 52 Starlink satellites, its Falcon 9 rocket lifting off from Cape Canaveral.

The first stage successfully completed its ninth flight, landing on a drone ship in the Atlantic, the 199th time that SpaceX has accomplished this so-called impossible task. The two fairing halves completed their fourth and fifth flights respectively.

The leaders in the 2023 launch race:

39 SpaceX
22 China
8 Russia
5 Rocket Lab

American private enterprise now leads China 44 to 22 in the national rankings, and the entire world combined 44 to 38, with SpaceX by itself leading the rest of the world, excluding other American companies, 39 to 38.

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Astronomers admit new satellite constellations “are not a threat” to Hubble

June 11, 2023 2:56 pm Robert Zimmerman

In a June 5, 2023 press release from the Space Telescope Science Institute (STScI) that operates both the Hubble and Webb space telescopes, astronomers admitted that the increased number of orbiting satellites from SpaceX and OneWeb have had little impact on Hubble’s observations, and even that impact has been reduced by new software tools.

Stark applied the new tool, based on the image analysis technique known as the Radon Transform, to identify satellite trails across Hubble’s camera with the widest field of view, the Advanced Camera for Surveys (ACS). In 2002 the satellite streaks were present in five percent of ACS exposures, with many of those too faint to discern easily. This rose to ten percent by 2022, although the typical brightness of the detected trails remained unchanged.

…”To date, these satellite trails have not had a significant impact on research with Hubble,” said Tom Brown, Head of STScI’s Hubble Mission Office. “The cosmic rays that strike the telescope’s detectors are a bigger nuisance.”

Radiation from space hits the ACS electronic detectors on every exposure, leaving streaks. These are easy to identify from exposure to exposure. The same holds true for artificial satellites. “The average width I measured for satellites was 5 to 10 pixels. The ACS’ widest view is 4,000 pixels across, so a typical trail will affect less than 0.5% of a single exposure. So not only can we flag them, but they don’t impact the majority of pixels in individual Hubble images. Even as the number of satellites increases, our tools for cleaning the pictures will still be relevant,” said Stark. [emphasis mine]

In other words, the claims by many astronomers that the increase in satellites is a threat to astronomy have been exaggerated. The new satellites might have a greater impact on ground-based telescopes, but based on these numbers (which would be comparable if not better for the giant 8-meter-plus big telescopes on Earth), that impact should be as easily mitigated.

I am gob-smacked that STScI issued this press release, since it undercuts the entire political narrative of the astronomical community that demands these new satellite constellations be either regulated, limited, or even banned, because otherwise all astronomy will be impossible. Based on the information presented here, none of those regulations are justified, at all, and that narrative is an utter lie.

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China tests parachutes on recent Long March 3B launch

June 10, 2023 10:17 am Robert Zimmerman

During a May 17, 2023 launch of a Long March 3B rocket, China tested the use of parachutes to better control the descent and landing of the rocket’s boosters.

The system was used on a Long March-3B rocket carrying a BeiDou navigation satellite into orbit on May 17 from the Xichang Satellite Launch Center in Sichuan Province, according to the academy.

Developed by the academy, the parachute brought down the rocket boosters to a predetermined location, narrowing the range of the landing area by 80 percent.

Based on the limited information provided by China’s state-run press, it appears this system was only tested on the four strap-on boosters, not on the first stage core. Regardless, such a system, which appears to be a copy of the system Rocket Lab has been developing for the last four years, will significantly reduce the hazards to Chinese inhabitants who live in the drop zones of these rockets.

Note too that China previously tried to copy SpaceX’s grid fins. Apparently its engineers found it difficult if not impossible to reverse engineer that concept, so they apparently decided to try copying Rocket Lab’s parachute methods instead.

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June 9, 2023 Zimmerman/Batchelor podcast

June 9, 2023 8:03 pm Robert Zimmerman

Embedded below the fold in two parts.

To listen to all of John Batchelor’s podcasts, go here.
» Read more

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Zac Brown Band – Knee Deep

June 9, 2023 6:01 pm Robert Zimmerman

An evening pause: Performed live in 2022.

I heard this song on the radio and was astonished because it actually didn’t overload the sound with a typical rock instrumentation so that it was no longer a country tune but a simply rock song with the singer having a western accent. Instead it is simple and clear and a pleasure to listen to, partly because it doesn’t sound like every other pop song played these days.

It also makes a great song to start the weekend.

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June 8, 2023 Zimmerman/Space Show podcast

June 9, 2023 12:34 pm Robert Zimmerman

You can now listen to the podcast of my appearance last night, June 8, 2023, on the Space Show at this link.

Twas an excellent show. For me however the highlight was the call from Ryan, a self-admitted “lefty” from Oregon, who called in simply to praise in astonishingly glowing words his admiration of my book, Conscious Choice. I had not prompted this, and was floored by his almost unbelievably positive impression.

It was even more gratifying because of his own political leanings, opposite of mine. He recognized the book’s depth of knowledge and grasp of truth, and realized it was not partisan.

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Eroding glacier on Martian slope?

June 9, 2023 12:21 pm Robert Zimmerman

Click for original image.

Cool image time! The picture to the right, enhanced, cropped, reduced, and sharpened to post here, was taken on April 1, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the science team labels as “Rough Ground and Bright Exposures” on the flanks of a wide mountain range on Mars, whose highest point is about 4,400 feet higher to the northeast and about 30 miles away.

The arrow indicates the downhill grade. Notice the smooth flat areas that seem to only partially cover much rougher terrain below. To my eye this top layer resembles an Earth glacier that has partly sublimated or melted away, exposing the rougher bedrock below that has been ground and scraped by the glacier previously.

However, this is not on Earth, so assuming it is like an Earth glacier is dangerous.
» Read more

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NASA worried FAA launch permit delays to Starship/Superheavy will delay first lunar landing

June 9, 2023 10:36 am Robert Zimmerman

During a public meeting on June 7, 2023, a NASA official expressed concerns that the FAA’s slow launch permit process for SpaceX’s test program for developing Starship/Superheavy will end up seriously delaying the first Artemis manned lunar landing, presently targeting a December 2025 launch date.

The official, Jim Free, was very careful how he worded his comments, but the FAA issue loomed large in his mind.

Free said NASA met with the Federal Aviation Administration recently to discuss the importance of the Starship rocket to the space agency’s moon exploration plans. The FAA is overseeing SpaceX’s investigation into the problems encountered on the April 20 test launch, when the flight termination system took longer to destroy the rocket than expected. The destruct system is designed to terminate the flight before an errant rocket threatens populated areas.

The FAA is not expected to grant SpaceX another Starship launch license until the investigation is complete, and federal regulators are satisfied with changes to the rocket to address any public safety concerns. “They just have to get flying,” Free said of SpaceX. “When you step back and you look at (it), that’s a lot of launches to get those missions done, so our FAA partners are critical to that.”

For the FAA to treat SpaceX’s test program like ordinary launches, requiring a detailed investigation by it after every test flight, will likely delay the development of Starship/Superheavy by years.

Following the early suborbital tests of Starship, the FAA did not “oversee” the investigations. The FAA merely observed closely SpaceX’s investigation, and let it move forward when SpaceX was satisfied. Now the FAA wants to determine for itself when each launch will occur, even though there is no one at the FAA truly qualified to do that. The result will be endless delays and paperwork, and many fewer flights spaced many more months apart, none of which will do anything to aid the development.

NASA is obviously trying to get the FAA to see this, but we must remember that the change in policy at the FAA almost certainly came from the Biden administration, which doesn’t care as much for getting to the Moon as it does wielding its power to hurt Elon Musk, whom it now sees as a political opponent. Expect NASA’s pleas to fall on deaf ears.

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Firefly buys orbital tug company Spaceflight

June 9, 2023 10:21 am Robert Zimmerman

Firefly Aerospace announced yesterday that it has purchased the orbital tug company Spaceflight, and will now offer its Sherpa tug as part of its launch services.

Spaceflight Inc. was known as a leader in arranging launches of small satellites on small launch vehicles or as secondary payloads on larger launch vehicles, deploying more than 460 payloads. Spaceflight had also developed its own series of orbital transfer vehicles called Sherpa, using a mix of chemical and electric propulsion systems.

Spaceflight has worked with a wide range of launch providers, although at one point it ran afoul of one of its largest partners, SpaceX. However, Firefly said that Spaceflight’s services will, going forward, be used only with Firefly’s vehicles.

Though Firefly will honor the contracts Spaceflight arranged for smallsats to be launched on other rockets, it appears it will be no longer be acting as a launch arranger. Instead, it will offer smallsats a package launch deal, including both its Alpha rocket and the tug. For this deal to pay off however Firefly has got to get Alpha operational. The two launches scheduled for this summer should do this, assuming they fly with no problems.

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Space Force awards SpaceX and ULA contracts for six launches each

June 9, 2023 10:09 am Robert Zimmerman

As part of its long term launch agreement with SpaceX and ULA, the Space Force today awarded both companies contracts for six launches each, all to occur beginning in 2025.

According to the overall agreement, each company got five-year contracts to launch as many as 40 missions. ULA won 60% of the missions and SpaceX 40%. However, the delays to ULA’s Vulcan rocket will likely change those numbers:

In a report released June 8, the Government Accountability Office noted that the NSSL program office continues to order launch services from ULA and SpaceX amid concerns about Vulcan’s delays. “ULA delayed the first certification flight of the Vulcan launch system … to accommodate challenges with the BE-4 engine and a delayed commercial payload, nearly two years later than originally planned,” said GAO. “In the event that Vulcan is unavailable for future missions, program officials stated that the Phase 2 contract allows for the ability to reassign missions to the other provider.”

One of the reasons that ULA has not hurried its effort to make Vulcan reusable and more competitive with SpaceX is that is already has this guaranteed military launch commitment. It doesn’t need to be as competitive.

What needs to happen is a third or fourth company has to enter the market, giving the military other options. The military also has to cancel this long term launch agreement, which limits the number of companies it will do business with to just SpaceX and ULA. It would be much better to open the competition up to everyone. The ULA would be forced to compete.

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X-ray telescope on ISS develops light leak

June 9, 2023 9:59 am Robert Zimmerman

The NICER X-ray telescope on ISS has developed a light leak that now limits its use during daylight hours.

The team suspects that at least one of the thin thermal shields on NICER’s 56 X-ray Concentrators has been damaged, allowing sunlight to reach its sensitive detectors.

Pending any repair attempts, observations during the daytime are now restricted to objects in the sky opposite the Sun. Night observations remain unaffected.

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Study: Long periods of weightlessness caused changes in the brain

June 9, 2023 9:55 am Robert Zimmerman

Scientists studying the brains of 30 astronauts who spent from two weeks to one year on ISS have found that the longer a person stayed in weightlessness the greater the changes caused in the brain, and the longer it takes to recover.

Their findings, reported today in Scientific Reports, reveal that the brain’s ventricles expand significantly in those who completed longer missions of at least six months, and that less than three years may not provide enough time for the ventricles to fully recover.

Ventricles are cavities in the brain filled with cerebrospinal fluid, which provides protection, nourishment and waste removal to the brain. Mechanisms in the human body effectively distribute fluids throughout the body, but in the absence of gravity, the fluid shifts upward, pushing the brain higher within the skull and causing the ventricles to expand.

“We found that the more time people spent in space, the larger their ventricles became,” said Rachael Seidler, a professor of applied physiology and kinesiology at the University of Florida and an author of the study. “Many astronauts travel to space more than one time, and our study shows it takes about three years between flights for the ventricles to fully recover.”

You can read the paper here. The expansion of ventricles is a normal process due to aging, but I could not find any description in the paper noting its impact, for good or ill. Long periods of weightlessness brings it about quickly, but only temporarily.

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China’s Kuaizhou-1A solid-fueled rocket launches satellite

June 9, 2023 9:41 am Robert Zimmerman

China’s Kuaizhou-1A solid-fueled rocket today successfully placed what its state-run press described as a “experiment satellite … to verify satellite communication and remote sensing technologies.”

The rocket lifted off from China’s interior Jiuquan spaceport in the Gobi desert. No word on where the rocket’s three lower stages crashed, or whether they did so near habitable areas.

The leaders in the 2023 launch race:

38 SpaceX
22 China
8 Russia
5 Rocket Lab

American private enterprise still leads China 43 to 22 in the national rankings, and the entire world combined 43 to 38, with SpaceX by itself now tied those other nations combined 38 to 38.

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Abbott & Costello – Modern Math

June 8, 2023 6:01 pm Robert Zimmerman

An evening pause: From their 1941 movie, In the Navy.

Hat tip sippin_bourbon, who “actually re-enacted this for a few classmates in 7th grade, then walked out
while they scratched their heads. The teacher, who had been watching caught me in the way out the door and told me not to do that on a test.” Sadly, a modern teacher today might consider this good math.

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Pushback: Racial quotas on corporate boards, imposed by California Democrats, struck down by court

June 8, 2023 1:33 pm Robert Zimmerman

The Democratic Party's long held support of racial hate
Segregation: The Democratic Party’s long held #1 goal,
then and now.

Pushback: A federal court has now struck down a 2020 law passed by the California legislature — run entirely by a Democratic Party super-majority — that required corporations to impose racial quotas on who they hired for their corporate boards.

In Alliance for Fair Board Recruitment v. Weber, [the court] struck down a state statute that required racial and gender-identity quotas for board members of publicly held corporations in California. The court ruled that this quota statute violates the U.S. Constitution as well as federal civil rights law.

The 2020 statute, AB 979, required California corporations to have as members on their board of directors individuals from supposedly “underrepresented groups,” including “an individual who identifies as Black, African American, Hispanic, Latino, Asian, Pacific Islander, Native American, Native Hawaiian, or Alaska Native, [or] gay, lesbian, bisexual, or transgender.”

The number of directors needed to satisfy these quotas was determined by the size of the corporation, but a minimum of one to three members was required. This racist statute went so far as to impose fines ranging from $100,000 to $300,000 for noncompliance.

» Read more

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Ice-filled fissure on Mars?

June 8, 2023 12:14 pm Robert Zimmerman

Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on February 15, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). The science team labeled this a “Terrain Sample”, which suggests but doesn’t guarantee that it was to fill a gap in the camera’s schedule in order to maintain that camera’s proper temperature, and therefore was targeted at a relatively random but potentially interesting location.

What we see is a fissure canyon, about 250 to 300 feet deep with cliffs about 125 high, that appears surrounded and even filled with icelike features. Even the craters on the plateau above the canyon appear like they either impacted in ice, or have since been filled and eroded by that ice.

But is it ice?
» Read more

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Scientists claim to identify cause of Sun’s fast solar wind

June 8, 2023 9:59 am Robert Zimmerman

The uncertainty of science: Using data from the Parker Solar Probe, scientists now believe they have identified the cause of Sun’s fast solar wind that streams from the magnetic regions on the Sun that are dubbed coronal holes.

In a paper published June 7, 2023 in the journal Nature, a team of researchers used data from NASA’s Parker Solar Probe to explain how the solar wind is capable of surpassing speeds of 1 million miles per hour. They discovered that the energy released from the magnetic field near the sun’s surface is powerful enough to drive the fast solar wind, which is made up of ionized particles—called plasma—that flow outward from the sun.

The results depend a great deal on computer modeling, based on our presently limited understanding of magnetic field processes in environments like stars. It will need to be confirmed by more data from Parker as well as later probes.

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Webb’s first deep field infrared image reveals hundreds of very early galaxies

June 8, 2023 9:47 am Robert Zimmerman

The uncertainty of science: Using the Webb Space Telescope to take a 32-day-long infrared exposure, scientists have obtained the deepest deep field picture of the universe’s earliest time period, within which they have found more than 700 galaxies, 717 to be exact.

The initial survey of these galaxies appear to reveal several facts.

About a sixth of early galaxies in the JADES sample are in the throes of star formation of a kind we don’t see in the nearby universe, Endsley explains, marked by extremely bright emission at certain wavelengths. “Stars within very early galaxies are forming in these super-compact clumps,” he adds, “forming hundreds, perhaps thousands of these very massive, young stars all at once, basically within the span of a couple millions of years.”

But they weren’t “on” all the time. The low fraction of galaxies with such emission suggests that individual clumps would suddenly light up with new stars and then rest for some time. This “bursty” mode of star formation could explain the unexpectedly bright galaxies announced by other astronomers — they were simply looking at the galaxies fired up with unexpectedly intense star formation.

However, while these findings explain too-bright galaxies, they don’t explain the too-massive galaxies, another early, albeit controversial find from JWST data. Endsley explains that even as hot, massive newborn stars light up their galaxy, they’re not necessarily associated with all that much mass. “We’re not really finding evidence of these over-massive objects within our JADES sample,” he states.

In other words, this data appears to contradict earlier data from Webb that other researchers said revealed galaxies that were too massive and developed to have formed that soon after the Big Bang.

All of this data remains somewhat uncertain, and is based on only tiny tidbits of information, gleaned from mere smudges of red-shifted infrared light. Much more research will be required, some not possible by Webb, before we have any solid answers, and even then there is going to be a lot of uncertainty.

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Boeing sued for stealing specialized tooling to assembly SLS

June 8, 2023 9:36 am Robert Zimmerman

A Colorado company, Wilson Aerospace, on June 6, 2023 filed a lawsuit against Boeing, claiming that the company conspired with Wilson’s direct competitors to steal the designs of its specialized tool for installing the core station engines on SLS.

According to the lawsuit, after some initial discussions, Boeing arranged for a “live” demonstration of Wilson’s torque device, during which participants could handle and operate it to verify the tool’s capability and performance. What Wilson claims it did not realize, however, is that some of the participants in this demonstration were not Boeing employees. “Wilson later learned that at least seven of those in attendance for the live presentation were external to Boeing and were, at the time, employees of Wilson’s direct competitors,” the lawsuit states. “This fact was concealed from Wilson who was deceived by Boeing and the ‘Bogus Boeing Employees’ into giving the presentation by falsely suggesting to Wilson that everyone was a Boeing employee.”

The complaint alleges that Boeing subsequently used information from this demonstration, as well as proprietary drawings and designs, to work with Wilson’s competitors to develop a cheaper solution. “Boeing concealed these facts from Wilson as part of its scheme to defraud Wilson and to transmit Wilson’s IP to its direct competitors,” the lawsuit states.

The company is demanding a jury trial. If its charges are proved true, it will be another piece of evidence demonstrating the level of corruption that exists at Boeing.

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Winner of the 2003 Eugene M. Emme Award of the American Astronautical Society.