Year: 2024

The jet 3,000 light years long that causes nearby stars to explode

10:48 am

The jet from M87
Click for original image.

Cool image time! The picture to the left, cropped, reduced, and sharpened to post here, was taken by the Hubble Space Telescope of the giant eliptical galaxy M87, known for more than a century by astronomers for the jet of gas that points outward from its center. Astronomers now know that this jet is produced by a supermassive black hole in the center of M87, weighing 6.5 billion times the mass of our Sun.

The blowtorch-like jet seems to cause stars to erupt along its trajectory. These novae are not caught inside the jet, but are apparently in a dangerous neighbourhood nearby. During a recent 9-month survey, astronomers using Hubble found twice as many of these novae going off near the jet as elsewhere in the galaxy. The galaxy is the home of several trillion stars and thousands of star-like globular star clusters.

M87 is considered an old galaxy, but its entire formation process remains uncertain.

5 comments

The mess that presently exists in science

10:16 am

Lysenko with Stalin
Trofim Lysenko (on the left), preaching to Stalin as he destroyed
Soviet plant research by persecuting anyone who disagreed with him,
and caused famines that killed millions.

Two stories today in the peer-review journal Science illustrate bluntly the dry rot that has seeped into the entire peer-review scientific community, much of it caused by the politics and incompetence that always follows when too much government money is available to hand out.

In the first story, Science simply provided a horrifying overall summary of the misconduct and research fakery committed by Eliezer Masliah, who as head of the the Division of Neuroscience at the National Institute of Aging (NIA) beginning in 2016 was crucial in recommending who would get major grants for doing research into diseases like Alzheimer’s.

Masliah’s own published peer-reviewed research into Alzheimer’s helped guide him in awarding grants. His work had said that proteins found in brain tissue were a major factor in causing the disease, and thus based on his recommendations for the next decade huge amounts of money were devoted to following up that conclusion.

The problem was that Masliah’s work was garbage.
» Read more

14 comments

Lockheed Martin drops out of commercial manned lunar rover consortium

9:29 am

Lunar Outpost, one of the three companies/partnerships that have won NASA contracts to develop manned lunar rovers for the Artemis program, has replaced Lockheed Martin as one of its partners.

This fact was only made evident now, three months after Lockheed parted ways, with a statement that a new much smaller company, Leidos, has joined the consortium.

That statement listed the other members of the Lunar Dawn team: General Motors, Goodyear and MDA Space. Notably absent was Lockheed Martin, which Lunar Outpost had described as its “principal partner” on the rover when it won the NASA contract in April. The website for Lunar Dawn also did not list Lockheed Martin as a partner.

In a Sept. 25 interview, Justin Cyrus, chief executive of Lunar Outpost, confirmed that Lockheed Martin was no longer involved in the rover project. “We just weren’t able to reach an agreement as we were negotiating the terms and conditions of the statement of work for this contract,” he said.

Both Lunar Outpost and Lockheed Martin provided no specific reasons for the break-up, other than typical PR statements such as “it wasn’t a good fit for us or them.”

The rover being built is dubbed Lunar Dawn. The present NASA contract only covers the design phase. Once completed NASA will choose one consortium to build the rover itself, picking from either the Lunar Outpost design or the designs submitted by Intuitive Machines and Venturi Astrolab.

0 comments

Japan launches reconnaissance satellite

10:47 pm

Mitsubishi successfully launched a reconnaissance satellite tonight (September 26 in Japan), its H2A rocket lifting off from Japan’s Tanegashima spaceport on the country’s southeast coast.

This was the next-to-last launch of the H2A, which is being replaced by the H3 rocket. This was also Japan’s fourth launch in 2024, the most that country has achieved since 2020. The leader board for the 2024 launch race remains the same:

94 SpaceX
43 China
11 Russia
11 Rocket Lab

American private enterprise still leads the rest of the world combined in successful launches 110 to 66, while SpaceX by itself now leads the entire world, including American companies, 94 to 82.

2 comments

September 25, 2024 Quick space links

3:48 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

  • Radian Aerospace begins tests of spaceplane prototype

    • To avoid State Department ITAR restrictions, these runway tests are using a prototype that uses jet engines and no space-specific technology, because the flights are taking place in an unnamed airport the United Arab Emirates.

 

 

 

1 comment

The real insurrection on Jan 6, 2021 was within the government, against Trump

3:28 pm

Under threat, from within
Under threat, from within

For the past three years the Democratic Party and its shills in the propaganda press have been claiming that Donald Trump as president instigated a violent insurrection on Jan 6, 2021, causing the Capitol to be invaded with significant violence. These claims have resulted in hundreds of people who attended the Capitol hill rally on that day getting long prison terms, often for doing nothing more than “parading” (the actual charge).

All of these claims are of course lies, something that was even patently obvious during the event itself. Trump himself was giving a speech a considerable distance from the Capitol when the first break-ins occurred and when security finally opened many doors to allow the publicly to quietly walk through the building, causing no violence or damage. During Trump’s speech he called for his supporters to demonstrate “peaceably.” Moreover, the only ones killed during the protest were two protesters, killed by Capitol security, one shot and the other beaten to death.

With the release this week of transcripts of interviews conducted by the Pentagon’s inspector general with various key officials in the military, we now know that not only did Trump not instigate the riot, he issued orders that these officials make sure there were sufficient security at the Capitol to prevent any violence or misbehavior.
» Read more

26 comments

Monitoring gullies on Mars for changes

12:25 pm

Overview map

Monitoring gullies on Mars
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and enhanced to post here, was taken on June 29, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). The scientists label the picture simply as “gully monitoring,” with an apparent goal of looking to see if this gully has changed since MRO took the first high resolution image two years previously. In the interim this terrain went from Martian spring, through summer and winter, and has now returned to spring.

As far as I can tell, no changes are visible, but then I am not using the highest resolution data available. Small changes might be detectable in the highest resolution using good detection software. Overall, the gully drops about 3,000 feet.

The white dot in the overview map above marks the location, on the southwest interior rim of an unnamed 30-mile wide crater. This region in the Martian cratered highlands was featured in a four part cool image series I did back 2023 (here, here, here, and here), with this as my conclusion:

Overall, our short survey of the southern cratered highlands suggests that the glacial material and ice found in the southern mid-latitudes affects the Martian surface differently than in the northern lowland plains. In the north the craters and the surrounding terrain often appear blobby, as if the ice is close to the surface and also a dominant component of the ground. Impacts therefore cause significant soft melt features, with craters often heavily distorted. Similarly, there is evidence of the existence of past mud volcanoes that once spewed water and mud from below ground.

In the south however the surface is at a higher elevation, and it appears the ice layer is deeper underground. Thus, it appears the ground is more firm, and the only obvious evidence of an underground layer of ice is revealed when sublimation and the subsequent erosion produce these large pits inside craters.

In the case of this crater, a small impact on its interior southwest slope apparently caused that underground layer of ice to melt temporarily and flow downhill, leaving behind the gully and flow features we see today. Based on the two MRO pictures taken a full Martian year apart, it appears the feature is generally stable and thus likely old, left over from that impact. If things are changing seasonally they are doing so in small amounts and slowly.

2 comments

Researchers identify the oldest cheese so far found, from 3,600 years ago

10:01 am

One of the ancient cheese samples
Click for full image, figure 1 from the paper.

Researchers have confirmed that three clumps of organic matter taken from a gravesite in northwestern China are the oldest samples of cheese yet identified — more than 3,600 years old — and are in fact a specific kind of cheese, called kefir cheese.

And it’s not just any cheese: Cow and goat DNA, as well as the bacterium Lactobacillus kefiranofaciens, has indicated that these clumps were in fact kefir cheese, providing insight into the history and evolution of probiotics and human health. L. kefiranofaciens is still a key microorganism in kefir soft cheeses. The researchers also identified the microscopic fungal species Pichia kudriavzevii, which is a type of yeast found in kefir grains today.

These kefir grains contain a host of probiotic bacteria and yeast, which is key in fermenting milk to produce kefir products that have been studied for their health impacts, particularly in the areas of the immune and gastrointestinal systems, as well as metabolic regulation.

“Our observation suggests kefir culture has been maintained in Northwestern China’s Xinjiang region since the Bronze Age,” Fu said.

You can read the published paper here. The researchers suggest the cheese indicates not only the evolutionary history by which humans began creating such diary products, it also suggests the historical routes this process followed across the European and Asian continents.

7 comments

Amateur gets new image of China’s X-37B copy in orbit

9:42 am

An amateur astronomer, Felix Schöfbänker, has released a new picture he took of China’s X-37B-type reusuable mini-shuttle while it was in orbit and prior to its landing on September 6, 2024.

The picture is low resolution and not very pretty, but it does appear to show that the mini-shuttle has a delta wing design.

While the recent space plane flight was underway, space watcher veteran Felix Schöfbänker in Upper Austria took imagery of the craft. In a recent posting, Schöfbänker reported he has imagery taken Aug. 10 of the Chinese space plane which shows a delta-wing design, captured when the craft turned 180 degrees since an earlier observation he made on July 30.

Schöfbänker also theorizes that the dark area between the wings could be the mini-shuttle’s cargo bay.

0 comments

A puzzling striped rock on Mars

9:32 am

A striped rock on Mars
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on September 13, 2024 by one of the high resolution cameras on the Mars rover Perseverance. The rock’s striped nature makes it unique, unlike any feature spotted by any rover previously. From an update today:

The science team thinks that this rock has a texture unlike any seen in Jezero Crater before, and perhaps all of Mars. Our knowledge of its chemical composition is limited, but early interpretations are that igneous and/or metamorphic processes could have created its stripes. Since Freya Castle [the name the science team gave the rock] is a loose stone that is clearly different from the underlying bedrock, it has likely arrived here from someplace else, perhaps having rolled downhill from a source higher up. This possibility has us excited, and we hope that as we continue to drive uphill, Perseverance will encounter an outcrop of this new rock type so that more detailed measurements can be acquired.

Without doubt the rock’s rounded surface suggests it was ground smooth by either water or ice. That surface certainly resembles glacial cobble seen across the northeast of the U.S. where ice glaciers once covered the entire landscape. The rock also resembles river cobble, smoothed by flowing water.

The stripes however suggest that prior to its being smoothed, this rock underwent a much more complex geological process, whereby two different materials were intermixed and squeezed together.

3 comments
1 … 48 49 50 51 52 … 191