"As awareness grows around the dangers of head trauma in sports, a small number of professional fighters and football players are turning to a psychedelic called ibogaine for treatment," reports the Los Angeles Times.

They note that the drug's proponents "tout its ability to treat addiction, post-traumatic stress disorder and traumatic brain injury, or TBI. " Ibogaine, which is derived from a West African shrub, is a Schedule 1 drug in America with no legal medical uses, and experts urge caution because of the need for further studies. But the results, several athletes say, are "game-changing".... Although athletes are just discovering ibogaine, the drug is well known within the veteran community, which experiences high rates of brain injury and PTSD. In Stanford's study on the effects of ibogaine on special forces veterans, participants saw average reductions of 88% in PTSD symptoms, 87% in depression symptoms and 81% in anxiety symptoms. They also exhibited improvements in concentration, information processing and memory.

"No other drug has ever been able to alleviate the functional and neuropsychiatric symptoms of traumatic brain injury," Dr. Nolan Williams, a professor of psychiatry and behavioral sciences, said in a statement on the results. "The results are dramatic, and we intend to study this compound further...."

States can work faster than the federal government by carving out exemptions for supervised ibogaine therapy programs, similar to what Oregon has done with psilocybin therapy. Many states have also opted to legalize marijuana for medicinal or recreational use... In June, Texas approved a historic $50-million investment in state funding to support drug development trials for ibogaine, inspired by the results seen by veterans. Arizona legislators approved $5 million in state funding for a clinical study on ibogaine in March, and California legislators are pushing to fast-track the study of ibogaine and other psychedelics.

tThe internet is full of people claiming to uncover conspiracies in politics and business..." reports the Wall Street Journal.

"Now an unlikely new villain has been added to the list: theoretical physicists," they write, saygin resentment of scientific authority figures "is the major attraction of what might be called 'conspiracy physics'." In recent years, a group of YouTubers and podcasters have attracted millions of viewers by proclaiming that physics is in crisis. The field, they argue, has discovered little of importance in the last 50 years, because it is dominated by groupthink and silences anyone who dares to dissent from mainstream ideas, like string theory... Most fringe theories are too arcane for listeners to understand, but anyone can grasp the idea that academic physics is just one more corrupt and self-serving establishment... In this corner of the internet, the scientist Scott Aaronson has written, "Anyone perceived as the 'mainstream establishment' faces a near-insurmountable burden of proof, while anyone perceived as 'renegade' wins by default if they identify any hole whatsoever in mainstream understanding...

As with other kinds of authorities, there are reasonable criticisms to be made of academic physics. By some metrics, scientific productivity has slowed since the 1970s. String theory has not fulfilled physicists' early dreams that it would become the ultimate explanation of all forces and matter in our universe. The Large Hadron Collider, the world's largest particle accelerator, has delivered fewer breakthroughs than scientists expected when it turned on in 2010. But even reasonable points become hard to recognize when expressed in the ways YouTube incentivizes. Conspiracy physics videos with titles like "They Just Keep Lying" are full of sour sarcasm, outraged facial expressions and spooky music...

Leonard Susskind, director of the Stanford Institute for Theoretical Physics, says physicists need to be both more sober and more forceful when addressing the public. The limits of string theory should be acknowledged, he says, but the idea that progress has slowed isn't right. In the last few decades, he and other physicists have figured out how to make progress on the vast project of integrating general relativity and quantum mechanics, the century-old pillars of physics, into a single explanation of the universe.
The bitter attacks on leading physicists get a succinct summary in the article from Chris Williamson, a "Love Island" contestant turned podcast host. "This is like 'The Kardashians' for physicists — I love it."

The BBC reports that a million-year-old human skull found in China suggests that the human species "began to emerge at least half a million years earlier than we thought, researchers are claiming in a new study." It also shows that we co-existed with other sister species, including Neanderthals, for much longer than we've come to believe, they say.

The scientists claim their analysis "totally changes" our understanding of human evolution and, if correct, it would certainly rewrite a key early chapter in our history. But other experts in a field where disagreement over our emergence on the planet is rife, say that the new study's conclusions are plausible but far from certain.

The discovery, published in the leading scientific journal Science, shocked the research team, which included scientists from a university in China and the UK's Natural History Museum. "From the very beginning, when we got the result, we thought it was unbelievable. How could that be so deep into the past?" said Prof Xijun Ni of Fudan University, who co-led the analysis. "But we tested it again and again to test all the models, use all the methods, and we are now confident about the result, and we're actually very excited."
Thanks to long-time Slashdot reader sinij for sharing the article.

Long-time Slashdot reader theodp says America's Patent and Trademark Office (USPTO) has granted a patent to Tableau (Salesforce's visual analytics platform) — for a patent covering "Data Processing For Visualizing Hierarchical Data": "A provided data model may include a tree specification that declares parent-child relationships between objects in the data model. In response to a query associated with objects in the data model: employing the parent-child relationships to determine a tree that includes parent objects and child objects from the objects based on the parent-child relationships; determining a root object based on the query and the tree; traversing the tree from the root object to visit the child objects in the tree; determining partial results based on characteristics of the visited child objects such that the partial results are stored in an intermediate table; and providing a response to the query that includes values based on the intermediate table and the partial results."

A set of 15 simple drawings is provided to support the legal and tech gobbledygook of the invention claims. A person can have a manager, Tableau explains in Figures 5-6 of its accompanying drawings, and that manager can also manage and be managed by other people. Not only that, Tableau illustrates in Figures 7-10 that computers can be used to count how many people report to a manager. How does this magic work, you ask? Well, you "generate [a] tree" [Fig. 13] and "traverse a tree" [Fig. 15], Tableau explains. But wait, there's more — you can also display the people who report to a manager in multi-level or nested pie charts (aka Sunburst charts), Tableau demonstrates in Fig. 11.

Interestingly, Tableau released a "pre-Beta" Sunburst chart type in late April 2023 but yanked it at the end of June 2023 (others have long-supported Sunburst charts, including Plotly). So, do you think Tableau should be awarded a patent in 2025 on a concept that has roots in circa-1921 Sunburst charts and tree algorithms taught to first-year CS students in circa-1975 Data Structures courses?

"Researchers have modified a standard glue gun to 3D print a bone-like material directly onto fractures," reports LiveScience, "paving the way for its use in operating rooms." The device, which has so far been tested in rabbits, would be particularly useful for fixing irregularly shaped fractures during surgery, the researchers say.

"To my knowledge, there are virtually no previous examples of applying the technology directly as a bone substitute," study co-author Jung Seung Lee, a biomedical engineer at Sungkyunkwan University in South Korea, told Live Science in an email. "This makes the approach quite unique and sets it apart from conventional methods...." "Further studies in larger animal models are needed before the technology can be used on humans," the article points out.

Thanks to long-time Slashdot reader fahrbot-bot for sharing the article.

The heliosphere "plays a major role in why life is possible on our planet," reports CNN, "and how it perhaps once existed on others such as Mars." (Basically solar winds create "a constant flow of charged particles" that form "an enormous bubble that protects the planets in our solar system from cosmic radiation permeating the Milky Way".)

NASA says the heliosphere's boundary is three times the distance between Earth and Pluto. (After leaving the heliosphere NASA's Voyager probes collected key data about the heliosphere.) But now there's a new mission to investigate "how that solar wind interacts with interstellar space at the boundary of the heliosphere," CNN reports — called the Interstellar Mapping and Acceleration Probe (or IMAP): The spacecraft's 10 instruments will also fill gaps in the existing map of the heliosphere, pieced together from data collected by previous missions, and help further explain how the heliosphere largely shields our solar system from damaging cosmic rays, the most highly energetic particles in the universe. Along with two other space weather missions that lifted off aboard the same rocket on Wednesday, IMAP will help scientists better predict when solar storms unleashed by the sun could affect our planet. When aimed at Earth, harsh radiation from the storms, also known as space weather, can pose risks to astronauts on the International Space Station as well as interfere with communications, the electric power grid, navigation, and radio and satellite operations.

"This next set of missions is the ultimate cosmic carpool," said Dr. Joe Westlake, director of NASA's Heliophysics Division, during a news conference on Sunday. "They will provide unprecedented insight into space weather. Every human on Earth, as well as nearly every system involved in space exploration and human needs, is affected by space weather...." The IBEX, or Interstellar Boundary Explorer, satellite has been mapping the heliosphere since launching in 2008. But IMAP can explore and map the boundaries of the heliosphere like never before because it has instruments with faster imaging that are capable of 30 times higher resolution. Once it reaches an orbit about 1 million miles (1.6 million kilometers) from Earth in about three months, IMAP will also capture observations of the solar wind in real time and measure particles that travel from the sun, study the heliosphere's boundary between 6 billion and 9 billion miles (9.7 billion to 14.5 billion kilometers) away, and even collect data from interstellar space.
Also launching was the SWFO-L1 mission, which CNN says is "intended to act as a solar storm detector, providing early warnings to protect astronauts in low-Earth orbit and satellites that provide critical communications on Earth. It's a tool that will be even more necessary as astronauts venture farther into deep space."

NASA streamed the launch live on YouTube.

Doctors report the first successful treatment for Huntington's disease using a new type of gene therapy given during 12 to 18 hours of delicate brain surgery. The BBC reports: An emotional research team became tearful as they described how data shows the disease was slowed by 75% in patients. It means the decline you would normally expect in one year would take four years after treatment, giving patients decades of "good quality life", Prof Sarah Tabrizi told BBC News. The first symptoms of Huntington's disease tend to appear in your 30s or 40s and is normally fatal within two decades -- opening the possibility that earlier treatment could prevent symptoms from ever emerging. None of the patients who have been treated are being identified, but one was medically retired and has returned to work. Others in the trial are still walking despite being expected to need a wheelchair. Treatment is likely to be very expensive. However, this is a moment of real hope in a disease that hits people in their prime and devastates families. [...]

It starts with a safe virus that has been altered to contain a specially designed sequence of DNA. This is infused deep into the brain using real-time MRI scanning to guide a microcatheter to two brain regions - the caudate nucleus and the putamen. This takes 12 to 18 hours of neurosurgery. The virus then acts like a microscopic postman -- delivering the new piece of DNA inside brain cells, where it becomes active. This turns the neurons into a factory for making the therapy to avert their own death. The cells produce a small fragment of genetic material (called microRNA) that is designed to intercept and disable the instructions (called messenger RNA) being sent from the cells' DNA for building mutant huntingtin. This results in lower levels of mutant huntingtin in the brain. [...]

The data showed that three years after surgery there was an average 75% slowing of the disease based on a measure which combines cognition, motor function and the ability to manage in daily life. The data also shows the treatment is saving brain cells. Levels of neurofilaments in spinal fluid -- a clear sign of brain cells dying -- should have increased by a third if the disease continued to progress, but was actually lower than at the start of the trial.

An anonymous reader quotes a report from The Guardian: The world's oceans have failed a key planetary health check for the first time, primarily due to the burning of fossil fuels, a report has shown. In its latest annual assessment, the Potsdam Institute for Climate Impact Research said ocean acidity had crossed a critical threshold for marine life. This makes it the seventh of nine planetary boundaries to be transgressed, prompting scientists to call for a renewed global effort to curb fossil fuels, deforestation and other human-driven pressures that are tilting the Earth out of a habitable equilibrium. The report, which follows earlier warnings about ocean acidity, comes at a time of recordbreaking ocean heat and mass coral bleaching.

Oceans cover 71% of the Earth's surface and play an essential role as a climate stabilizer. The new report calls them an "unsung guardian of planetary health", but says their vital functions are threatened. The 2025 Planetary Health Check noted that since the start of the industrial era, oceans' surface pH has fallen by about 0.1 units, a 30-40% increase in acidity, pushing marine ecosystems beyond safe limits. Cold-water corals, tropical coral reefs and Arctic marine life are especially at risk. This is primarily due to the human-caused climate crisis. When carbon dioxide from oil, coal and gas burning enters the sea, it forms carbonic acid. This reduces the availability of calcium carbonate, which many marine organisms depend upon to grow coral, shells or skeletons.

Near the bottom of the food chain, this directly affects species like oysters, molluscs and clams. Indirectly, it harms salmon, whales and other sea life that eat smaller organisms. Ultimately, this is a risk for human food security and coastal economies. Scientists are concerned that it could also weaken the ocean's role as the planet's most important heat absorber and its capacity to draw down 25-30% of the carbon dioxide in the atmosphere. Marine life plays an important role in this process, acting as a "biotic bump" to sequester carbon in the depths. In the report, all of the other six breached boundaries -- climate change, biosphere integrity, land system change, freshwater use, biogeochemical flows, and novel entities -- showed a worsening trend. But the authors said the addition of the only solely ocean-centerd category was a alarming development because of its scale and importance.

NASA aims to launch its first crewed lunar mission in over 50 years, as early as February. The 10-day Artemis II mission will send four astronauts on a lunar flyby to test systems, paving the way for future Moon landings under the Artemis program. The BBC reports: Lakiesha Hawkins, Nasa's acting deputy associate administrator said it would be an important moment in the human exploration of space. "We together have a front row seat to history," she told a news conference this afternoon. "The launch window could open as early as the fifth of February, but we want to emphasize that safety is our top priority." Artemis Launch Director, Charlie Blackwell-Thompson explained that the powerful rocket system built to take the astronauts to the Moon, the Space Launch System (SLS) was "pretty much stacked and ready to go." All that remained was to complete the crew capsule, called Orion, connected to SLS and to complete ground tests.

The Artemis II launch will see four astronauts go on a ten-day round trip to the Moon and back to the Earth. The astronauts, Reid Wiseman, Victor Glover, and Christina Koch, of Nasa and Jeremy Hansen of the Canadian Space Agency, will not land on the Moon, though they will be the first crew to travel beyond low Earth orbit since Apollo 17 in 1972. The lead Artemis II flight director, Jeff Radigan explained that the crew would be flying further into space than anyone had been before. "They're going at least 5,000 nautical miles (9,200Km) past the Moon, which is much higher than previous missions have gone," he told reporters. Further reading: NASA Introduces 10 New Astronaut Candidates

An analysis of a literature database finds that text-generating AI tools -- including ChatGPT and Gemini -- can be used to rewrite scientific papers and produce 'copycat' versions that are then passed off as new research. Nature: In a preprint posted on medRxiv on 12 September, researchers identified more than 400 such papers published in 112 journals over the past 4.5 years, and demonstrated that AI-generated biomedicine studies could evade publishers' anti-plagiarism checks.

The study's authors warn that individuals and paper mills -- companies that produce fake papers to order and sell authorships -- might be exploiting publicly available health data sets and using large language models (LLMs) to mass-produce low-quality papers that lack scientific value.

"If left unaddressed, this AI-based approach can be applied to all sorts of open-access databases, generating far more papers than anyone can imagine," says Csaba Szabo, a pharmacologist at the University of Fribourg in Switzerland, who was not involved in the work. "This could open up Pandora's box [and] the literature may be flooded with synthetic papers."

alternative_right shares a report from ScienceDaily: Scientists have developed a new multi-layered metalens design that could revolutionize portable optics in devices like phones, drones, and satellites. By stacking metamaterial layers instead of relying on a single one, the team overcame fundamental limits in focusing multiple wavelengths of light. Their algorithm-driven approach produced intricate nanostructures shaped like clovers, propellers, and squares, enabling improved performance, scalability, and polarization independence. [...] Mr Joshua Jordaan, from the Research School of Physics at the Australian National University and the ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), said the ability to make metalenses to collect a lot of light will be a boon for future portable imaging systems. "The metalenses we have designed would be ideal for drones or earth-observation satellites, as we've tried to make them as small and light as possible," he said. The findings have been published in the journal Optics Express.

NASA has unveiled 10 new astronaut candidates drawn from over 8,000 applicants. The diverse group includes four men and six women -- pilots, scientists, and medical professionals -- who will train for future missions to the ISS, the moon, and eventually Mars. CBS News reports: This is NASA's first astronaut class with more women than men. It includes six pilots with experience in high-performance aircraft, a biomedical engineer, an anesthesiologist, a geologist and a former SpaceX launch director. Among the new astronaut candidates is 39-year-old Anna Menon, a mother of two who flew to orbit in 2024 aboard a SpaceX Crew Dragon as a private astronaut on a commercial, non-NASA flight. [...]

The other members of the 2025 astronaut class are:
- Army Chief Warrant Officer 3 Ben Bailey, 38, a graduate of the Naval Test Pilot School with more than 2,000 hours flying more than 30 different aircraft, including recent work with UH-60 Black Hawk and CH-47F Chinook helicopters.
- Lauren Edgar, 40, who holds a Ph.D. in geology from the California Institute of Technology, with experience supporting NASA's Mars exploration rovers and, more recently, serving as a deputy principal investigator with NASA's Artemis 3 moon landing mission.
- Air Force Maj. Adam Fuhrmann, 35, an Air Force Test Pilot School graduate with more than 2,100 hours flying F-16 and F-35 jets. He holds a master's degree in flight test engineering.
- Air Force Maj. Cameron Jones, 35, another graduate of Air Force Test Pilot School as well as the Air Force Weapons School with more than 1,600 hours flying high-performance aircraft, spending most of his time flying the F-22 Raptor.
- Yuri Kubo, 40, a former SpaceX launch director with a master's in electrical and computer engineering who also competed in ultimate frisbee contests.
- Rebecca Lawler, 38, a former Navy P-3 Orion pilot and experimental test pilot with more than 2,800 hours of flight time, including stints flying a NOAA hurricane hunter aircraft. She was a Naval Academy graduate and was a test pilot for United Airlines at the time of her selection.
- Imelda Muller, 34, a former undersea medical officer for the Navy with a medical degree from the University of Vermont's Robert Larner College of Medicine; she was completing her residency in anesthesia at Johns Hopkins University School of Medicine in Baltimore at the time of her astronaut selection.
- Navy Lt. Cmdr. Erin Overcash, 34, a Naval Test Pilot School graduate and an experienced F/A-18 and F/A-18F Super Hornet pilot with 249 aircraft carrier landings. She also trained with the USA Rugby Women's National Team.
- Katherine Spies, 43, a former Marine Corps AH-1 attack helicopter pilot and a graduate of the Naval Test Pilot School with more than 2,000 hours flying time. She was director of flight test engineering for Gulfstream Aerospace Corp. at the time of her astronaut selection.

The Moon is rusting -- and it's Earth's fault. Nature: Scientists have found that oxygen particles blown from Earth to the Moon can turn lunar minerals into hematite, also known as rust. The discovery adds to researchers' growing understanding of the deep interconnection between Earth and the Moon -- and shows how the Moon keeps a geological record of those interactions, says Ziliang Jin, a planetary scientist at Macau University of Science and Technology in China. He and his colleagues reported their findings earlier this month in Geophysical Research Letters.

Most of the time, both Earth and the Moon are bathed in a stream of charged particles emanating from the Sun. But for around five days each month, Earth passes between the Sun and the Moon, blocking most of the flood of solar particles. During that time, the Moon is exposed mainly to particles that had been part of Earth's atmosphere before blowing into space -- a phenomenon known as Earth wind. That wind contains ions of various elements, including hydrogen, oxygen and nitrogen. When those charged particles hit the Moon, they can implant themselves into the upper layers of lunar soil and trigger chemical reactions.

"New research suggests ash and soot from burning wildlands has caused more than 41,000 excess deaths annually from 2011 to 2020," reports the Los Angeles Times: By 2050, as global warming makes large swaths of North America hotter and drier, the annual death toll from smoke could reach between 68,000 and 71,000, without stronger preventive and public health measures...

In the span studied, millions of people were exposed to unhealthful levels of air pollution. When inhaled, this microscopic pollution not only aggravates people's lungs, it also enters the bloodstream, provoking inflammation that can induce heart attacks and stroke. For years, researchers have struggled to quantify the danger the smoke poses. In the paper published in Nature, they report it's far greater than public health officials may have recognized. Yet most climate assessments "don't often include wildfire smoke as a part of the climate-related damages. And it turns out, by our calculation, this is one of the most important climate impacts in the U.S."

The study also estimates a higher number of deaths than previous work in part because it projected mortality up to three years after a person has been exposed to wildfire smoke. It also illustrates the dangers of smoke drifting from fire-prone regions into wetter parts of the country, a recent phenomenon that has garnered more attention with large Canadian wildfires contributing to hazy skies in the Midwest and East Coast in the last several years. "Everybody is impacted across the U.S.," said Minghoa Qiu [lead author and assistant professor at Stony Brook University]. "Certainly the Western U.S. is more impacted. But the Eastern U.S. is by no means isolated from this problem."

Many Apple Watches will soon be able to alert users about possible high blood pressure, reports Reuters — culminating six years of research and development: Apple used AI to sort through the data from 100,000 people enrolled in a heart and movement study it originally launched in 2019 to see whether it could find features in the signal data from the watch's main heart-related sensor that it could then match up with traditional blood pressure measurements, said Sumbul Ahmad Desai [Apple's vice president of health]. After multiple layers of machine learning, Apple came up with an algorithm that it then validated with a specific study of 2,000 participants.

Apple's privacy measures mean that "one of the ironies here is we don't get a lot of data" outside of the context of large-scale studies, Desai said. But data from those studies "gives us a sense of, scientifically, what are some other signals that are worth pulling the thread on ... those studies are incredibly powerful."

The feature, which received approval from the U.S. Food and Drug Administration, does not measure blood pressure directly, but notifies users that they may have high blood pressure and encourages them to use a cuff to measure it and talk to a doctor. Apple plans to roll out the feature to more than 150 countries, which Ami Bhatt, chief innovation officer of the American College of Cardiology, said could help people discover high blood pressure early and reduce related conditions such as heart attacks, strokes and kidney disease. Bhatt, who said her views are her own and do not represent those of the college, said Apple appears to have been careful to avoid false positives that might alarm users. But she said the iPhone maker should emphasize that the new feature is no substitute for traditional measurements and professional diagnosis.
The article notes that the feature will be available in Apple Watch Series 11 models that go on sale on Friday, as well as models back to the Apple Watch Series 9.

"Astronomers have spotted a quasi-moon near Earth," reports CNN, "and the small space rock has likely been hanging out near our planet unseen by telescopes for about 60 years, according to new research." The newly discovered celestial object, named 2025 PN7, is a type of near-Earth asteroid that orbits the sun but sticks close to our planet. Like our world, 2025 PN7 takes one year to complete an orbit around the sun...

The newly found 2025 PN7 is just one of a handful of known quasi-moons with orbits near our planet, including Kamo'oalewa, which is also thought to be an ancient lunar fragment. Kamo'oalewa is one of the destinations of China's Tianwen-2 mission launched in May, which aims to collect and return samples from the space rock in 2027. The Pan-STARRS observatory located on the Haleakala volcano in Hawaii captured observations of 2025 PN7 on August 29. Archival data revealed that the object has been in an Earth-like orbit for decades.

The quasi-moon managed to escape the notice of astronomers for so long because it is small and faint, said Carlos de la Fuente Marcos, a researcher on the faculty of mathematical sciences at the Complutense University of Madrid who recently authored a paper about the space rock. The paper was published on September 2 in the journal Research Notes of the American Astronomical Society, which is for timely non-peer-reviewed astronomical observations. The space rock swings within 186,000 miles (299,337 kilometers) of us during its closest pass of our planet, de la Fuente Marcos said.... "It can only be detected by currently available telescopes when it gets close to our planet as it did this summer," de la Fuente Marcos explained. "Its visibility windows are few and far between. It is a challenging object...."

Astronomers are still trying to figure out 2025 PN7's size. About 98 feet (30 meters) across is a reasonable estimate, de la Fuente Marcos said. It also has the potential to be 62 feet (19 meters) in diameter, according to EarthSky. The space rock is currently the smallest-known quasi-moon to have orbited near Earth, de la Fuente Marcos said.

A July combat training exercise involved a satellite dish-style antenna that "could fire enough electromagnetic energy to fry the satellite 22,000 miles away," reports the Washington Post. But "Instead, the salvo would be more covert — millisecond pulses of energy that would subtly disrupt the satellite's signals, which U.S. military forces were using to communicate in the Pacific Ocean." The goal was to disguise the strike as a garbled connection that could be easily remedied by securing a loose cable or a simple reboot, leaving U.S. service members frustrated without raising their suspicions. [And using less power "would make it harder for the Blue Team to track where the interference was coming from."] This is how the next war could start: invisible shots fired in space on the electromagnetic spectrum that could render U.S. fighter jets and aircraft carriers deaf and blind, unable to communicate. In this case, the "aggressors" targeting the U.S. satellite were not from China or Russia, but rather an elite squadron of U.S. Space Force Guardians mimicking how potential adversaries would act in a conflict that begins in orbit... Involving more than 700 service members and spanning 50 million square miles and six time zones, the training exercise, called Resolute Space, was observed firsthand exclusively by The Washington Post.
The article describes leadership at the U.S. Space Force "still honing their mission while jousting with adversaries, such as China, that are moving quickly and conducting combat-like operations in orbit... While the Space Force continues to evolve, many defense analysts and some members of Congress fear the United States has already ceded its dominance in space to China and others." With a budget of just $40 billion, the relatively tiny Space Force makes up just about 4 percent of the Defense Department's budget and less than 1 percent of its personnel. It has more than 15,000 Guardians, which also includes several thousand civilians. By comparison, the Army has nearly 1 million soldiers. The Space Force has been squeezed under the department of the Air Force and struggled to distinguish itself from the other branches...

China, Russia and others have demonstrated that they can take out or interfere with the satellites operated by the Pentagon and intelligence agencies that provide the nation's missile warning and tracking, reconnaissance and communications. China in particular has moved rapidly to build an arsenal of space-based weapons... [R]ecently, several of China's satellites have engaged in what Space Force officials have called "dogfighting," jousting with U.S. satellites at high speeds and close ranges.

An anonymous reader shared this report from the Washington Post: Finnish tech firm Bluefors, a maker of ultracold refrigerator systems critical for quantum computing, has purchased tens of thousands of liters of Helium-3 from the moon — spending "above $300 million" — through a commercial space company called Interlune. The agreement, which has not been previously reported, marks the largest purchase of a natural resource from space.

Interlune, a company founded by former executives from Blue Origin and an Apollo astronaut, has faced skepticism about its mission to become the first entity to mine the moon (which is legal thanks to a 2015 law that grants U.S. space companies the rights to mine on celestial bodies). But advances in its harvesting technology and the materialization of commercial agreements are gradually making this undertaking sound less like science fiction. Bluefors is the third customer to sign up, with an order of up to 10,000 liters of Helium-3 annually for delivery between 2028 and 2037...

Helium-3 is lighter than the Helium-4 gas featured at birthday parties. It's also much rarer on Earth. But moon rock samples from the Apollo days hint at its abundance there. Interlune has placed the market value at $20 million per kilogram (about 7,500 liters). "It's the only resource in the universe that's priced high enough to warrant going out to space today and bringing it back to Earth," said Rob Meyerson [CEO of Interlune and former president of Blue Origin]...

[H]eat, even in small doses, can cause qubits to produce errors. That's where Helium-3 comes in. Bluefors makes the cooling technology that allows the computer to operate — producing chandelier-type structures known as dilution refrigerators. Their fridges, used by quantum computer leader IBM, contain a mixture of Helium-3 and Helium-4 that pushes temperatures below 10 millikelvins (or minus-460 degrees Fahrenheit)... Existing quantum computers have been built with more than a thousand qubits, he said, but a commercial system or data center would need a million or more. That could require perhaps thousands of liters of Helium-3 per quantum computer. "They will need more Helium-3 than is available on planet Earth," said Gary Lai [a co-founder and chief technology officer of Interlune, who was previously the chief architect at Blue Origin]. Most Helium-3 on Earth, he said, comes from the decay of tritium (an isotope of hydrogen) in nuclear weapons stockpiles, but between 22,000 and 30,000 liters are made each year...

"We estimate there's more than a million metric tons of Helium-3 on the moon," Meyerson said. "And it's been accumulating there for 4 billion years." Now, they just need to get it.
Interlune CEO Meyerson tells the post "It's really all about establishing a resilient supply chain for this critical material" — adding that in the long-term he could also see Helium-3 being used for other purposes including fusion energy.

"Betelgeuse may have competition for the most exciting star about to go nova near Earth," writes Space.com.

"Astronomers have discovered the secret of a strange star system that has baffled them for years, finding it contains a dead star about to erupt after overfeeding on a stellar companion." The supernova explosion of this cosmic cannibal could be as bright as the moon, making it visible with the naked eye over Earth even in broad daylight. The system in question is the double star V Sagittae located around 10,000 light-years from Earth, containing a white dwarf stellar remnant and its victim companion star, which orbit each other roughly twice every Earth day. The new research and the revelation of this white dwarf's imminent catastrophic fate answer questions about V Sagittae that have lingered for 123 years...

White dwarfs represent the final stage of stars with masses around that of the sun, occurring when they run out of fuel for nuclear fusion... [W]hite dwarfs that have a stellar companion can get a second lease on life and a more conclusive and explosive end... [T]he stolen stellar material piles up on the surface of the white dwarf until it pushes this stellar remnant past the so-called Chandrasekhar limit of 1.4 solar masses. This is the mass limit that a stellar remnant has to exceed to trigger a supernova...

However, this team found something very different and extraordinary happening with the stellar material being stolen by the white dwarf in V Sagittae... This investigation revealed that there is a giant halo of gas comprised of material stolen from the companion star wrapped around both the cannibal white dwarf and its stellar victim... "The white dwarf cannot consume all the mass being transferred from its hot star twin, so it creates this bright cosmic ring," team member Pasi Hakala from the University of Turku said. "The speed at which this doomed stellar system is lurching wildly, likely due to the extreme brightness, is a frantic sign of its imminent, violent end."

"The matter accumulating on the white dwarf is likely to produce a nova outburst in the coming years, during which V Sagittae would become visible with the naked eye," Pablo Rodríguez-Gil from Spain's Instituto de Astrofisica de Canarias said. "But when the two stars finally smash into each other and explode, this would be a supernova explosion so bright it'll be visible from Earth even in the daytime."
The research was conducted with the Very Large Telescope (four individual telescopes high in the mountains of Chile) — and published last week in the journal Monthly Notices of the Royal Astronomical Society.

Micro- and nanoplastic particles "infiltrate all systems of the body, including the brain," notes the University of Rhode Island, "where they can accumulate and trigger Alzheimer's-like conditions, according to a new study by researchers in the University of Rhode Island College of Pharmacy."

ScienceDaily shares the announcement: After a previous study that showed how microplastics can infiltrate all systems of the body — including the blood-brain barrier, which protects the brain from harmful substances as small as viruses and bacteria — University of Rhode Island pharmacy assistant professor Jaime Ross expanded the study to determine the brain health impacts of the plastic toxins. Her findings indicate that the accumulation of micro- and nanoplastics in the brain can lead to cognitive decline and even Alzheimer's disease, especially in those who carry genetic risk factors.

Ross' latest study, published recently in the journal Environmental Research Communications, examined mice that had been genetically modified to include the naturally occurring gene APOE4, a strong indicator of Alzheimer's risk making people 3.5 times more likely to develop the disease than those who carry the APOE3 variant of the gene that is passed from parents to offspring... Ross and her team exposed two groups of mice — one with the APOE4 variant and one with APOE3 — to micro- and nanoplastics in their drinking water over a period of three weeks. The tiny particles from polystyrene — among the most abundant plastics in the world, found in Styrofoam take-out containers, plastic cups and more — infiltrated the mice' organs, including the brain, as expected...

Ross' team then ran the mice through a series of tests to examine their cognitive ability, beginning with an open-field test, in which researchers put a mouse in a chamber and allow it to explore at will for 90 minutes. Ordinarily, a mouse will hug the walls, naturally attempting to hide from potential predators. However, after microplastic exposure, the APOE4 mice — especially the male mice — tended to wander more in the middle of the chamber and spend time in open space, leaving themselves vulnerable to predators...

The results are concerning enough to warrant further study into the cognitive decline caused by exposure to micro- and nanoplastics, which are among the most prominent environmental toxins to which people are routinely exposed... Ross is continuing to expand her research into the topic and encourages others to do so, in the hope of leading to better regulation of the toxins.