An anonymous reader shared this report from the New York Times: American officials are trying to increase international pressure on Russia not to deploy an antisatellite nuclear weapon in space, and have obtained information that undermines Moscow's explanation that the device it is developing is for peaceful scientific purposes, a senior State Department official said on Friday...

On Friday, Mallory Stewart, the assistant secretary of state for arms control, said that while the United States had been aware of Russia's pursuit of such a device for years, "only recently have we been able to make a more precise assessment of their progress." Ms. Stewart, speaking at the nonpartisan Center for Strategic and International Studies in Washington, said the orbit the Russian satellite would occupy is in a high-radiation region not used by other satellites, information that undercuts Russia's defense that it is not developing a weapon.

An anonymous reader shared this report from the Washington Post: The heat shield of the Orion spacecraft intended one day to carry astronauts to the moon under NASA's Artemis program suffered unexpected damage in more than 100 places as the spacecraft returned to Earth during an uncrewed test flight in 2022, according to a watchdog report released late Wednesday.

While the capsule withstood the fiery tumult of reentry, when temperatures reached 5,000 degrees Fahrenheit as it plunged through the atmosphere at nearly 25,000 mph, the damage the heat shield suffered was far greater than NASA engineers had expected and more severe than NASA had revealed previously. Photos of the heat shield in the report showed gouges that look like small potholes. "Should the same issue occur on future Artemis missions, it could lead to the loss of the vehicle or crew," the report, by NASA's inspector general, concluded... The IG report provides the most detailed description of the issue to date. It also highlighted other problems with the spacecraft that could create significant challenges for the space agency as it seeks to return humans to the lunar surface for the first time in more than 50 years.

Portions of the heat shield "wore away differently than NASA engineers predicted, cracking and breaking off the spacecraft in fragments that created a trail of debris rather than melting away as designed," according to the report. That, in turn, "could have caused enough structural damage to cause one of Orion's parachutes to fail...." In addition to the heat shield erosion on Orion, which is manufactured by Lockheed Martin, the IG said several bolts on the crew module "experienced an exposed gap that allowed for increased heating to the bolt interior and greater than expected melting and erosion."
Earlier this year, NASA announced the next flight for its moon program — sending a crew of four around the moon — would be delayed, according to the article. The moon-orbiting mission would now occur "no earlier than September 2025, largely because officials wanted to study the heat shield issue further and understand why it eroded as it did."

The article adds that this new report "casts doubt on both NASA's rosy original assessment of the test flight" — as well as the likelihood that a lunar landing will occur by late 2026.

The world's highest astronomical site is officially open for business after being in the works for 26 years. Space.com reports: The Japanese University of Tokyo Atacama Observatory, or TAO, which was first conceptualized 26 years ago to study the evolution of galaxies and exoplanets, is perched on top of a tall mountain in the Chilean Andes at 5,640 meters (18,500 feet) above sea level. The facility's altitude surpasses even the Atacama Large Millimeter Array, which is at an elevation of 5,050 meters (16,570 feet).

TAO is located on the summit of Atacama's Cerro Chajnantor mountain, whose name means "place of departure" in the now-extinct Kunza language of the indigenous Likan Antai community. The region's high altitude, sparse atmosphere and perennially arid climate is deadly to humans, but makes an excellent spot for infrared telescopes like TAO as their observational accuracies rely on low moisture levels, which render Earth's atmosphere transparent in infrared wavelengths.

TAO's 6.5-meter telescope consists of two science instruments designed to observe the universe in infrared, which is electromagnetic radiation with a wavelength longer than visible light but shorter than microwaves. One of the instruments, named SWIMS, will image galaxies from the very early universe to understand how they coalesced out of pristine dust and gas, a process whose specifics remain murky despite decades of research. The second, named MIMIZUKU, will aid the overarching science goal by studying primordial disks of dust within which stars and galaxies are known to form, according to the mission plan. Constructing the telescope on the summit of Mt. Chajnantor "was an incredible challenge, not just technically, but politically too," Yuzuru Yoshii, a professor at the University of Tokyo in Japan who spearheaded TAO since 1998, said in a statement. "I have liaised with Indigenous peoples to ensure their rights and views are considered, the Chilean government to secure permission, local universities for technical collaboration, and even the Chilean Health Ministry to make sure people can work at that altitude in a safe manner."

"Thanks to all involved, research I've only ever dreamed about can soon become a reality, and I couldn't be happier," he added.

China launched an uncrewed lunar mission Friday that aims to bring back samples from the far side of the moon for the first time, in a potentially major step forward for the country's ambitious space program. From a report: The Chang'e-6 probe -- China's most complex robotic lunar mission to date -- blasted off on a Long March-5 rocket from the Wenchang Space Launch Center in south China's Hainan island, where space fans had gathered to watch the historic moment. The country's National Space Administration said the launch was a success. The launch marks the start of a mission that aims to be a key milestone in China's push to become a dominant space power with plans to land astronauts on the moon by 2030 and build a research base on its south pole.

It comes as a growing number of countries, including the United States, eye the strategic and scientific benefits of expanded lunar exploration in an increasingly competitive field. China's planned 53-day mission would see the Chang'e-6 lander touch down in a gaping crater on the moon's far side, which never faces Earth. China became the first and only country to land on the moon's far side during its 2019 Chang'e-4 mission. Any far-side samples retrieved by the Chang'e-6 lander could help scientists peer back into the evolution of the moon and the solar system itself -- and provide important data to advance China's lunar ambitions.

Aria Alamalhodaei reports via TechCrunch: Hubble Network has become the first company in history to establish a Bluetooth connection directly to a satellite -- a critical technology validation for the company, potentially opening the door to connecting millions more devices anywhere in the world. The Seattle-based startup launched its first two satellites to orbit on SpaceX's Transporter-10 ride-share mission in March; since that time, the company confirmed that it has received signals from the onboard 3.5mm Bluetooth chips from over 600 kilometers away.

The sky is truly the limit for space-enabled Bluetooth devices: the startup says its technology can be used in markets including logistics, cattle tracking, smart collars for pets, GPS watches for kids, car inventory, construction sites, and soil temperature monitoring. Haro said the low-hanging fruit is those industries that are desperate for network coverage even once per day, like remote asset monitoring for the oil and gas industry. As the constellation scales, Hubble will turn its attention to sectors that may need more frequent updates, like soil monitoring, to continuous coverage use cases like fall monitoring for the elderly. Once its up and running, a customer would simply need to integrate their devices' chipsets with a piece of firmware to enable connection to Hubble's network.

In a first for "digital health technology," the Apple Watch's atrial fibrillation (AFib) history feature has been approved by the FDA to join the FDA's Medical Device Development Tools (MDDT) program. This means the wearable is now usable in clinical studies. The Verge reports: The FDA announcement describes using it as a noninvasive way to collect the data both before and after treatment: "Designed to be used as a biomarker test to help evaluate estimates of AFib burden as a secondary effectiveness endpoint within clinical studies intended to evaluate the safety and effectiveness of cardiac ablation devices to treat."

When given the choice, pet parrots prefer to video-call each other instead of watch pre-recorded videos of other birds. Those are the findings from a new paper (PDF) set to appear next week at a conference on Human Factors in Computing Systems in Hawaii. Phys.Org reports: The study, led by animal-computer interaction specialists at the University of Glasgow, gave tablet devices to nine parrots and their owners to explore the potential of the video chats to expand the birds' social lives. Their results suggest that the clever birds, who often suffer from loneliness in captivity, may be able to tell the difference between live and pre-recorded content on digital devices, and strongly prefer interacting with other birds in real time.

Over the course of the six-month study, the parrots chose to initiate calls to other birds significantly more often than they opted to watch pre-recorded footage. They also seemed more engaged in the live chats, spending much longer on calls with other birds than they did watching videos from a library of options. The findings could help steer the future course of the emerging "animal internet," which uses digital technology to empower animals to interact with humans and each other in new ways.

An anonymous reader quotes a report from Techdirt: Last week, hundreds of nurses protested the implementation of sloppy AI into hospital systems in front of Kaiser Permanente. Their primary concern: that systems incapable of empathy are being integrated into an already dysfunctional sector without much thought toward patient care: "No computer, no AI can replace a human touch," said Amy Grewal, a registered nurse. "It cannot hold your loved one's hand. You cannot teach a computer how to have empathy."

There are certainly roles automation can play in easing strain on a sector full of burnout after COVID, particularly when it comes to administrative tasks. The concern, as with other industries dominated by executives with poor judgement, is that this is being used as a justification by for-profit hospital systems to cut corners further. From a National Nurses United blog post (spotted by 404 Media): "Nurses are not against scientific or technological advancement, but we will not accept algorithms replacing the expertise, experience, holistic, and hands-on approach we bring to patient care," they added.

Kaiser Permanente, for its part, insists it's simply leveraging "state-of-the-art tools and technologies that support our mission of providing high-quality, affordable health care to best meet our members' and patients' needs." The company claims its "Advance Alert" AI monitoring system -- which algorithmically analyzes patient data every hour -- has the potential to save upwards of 500 lives a year. The problem is that healthcare giants' primary obligation no longer appears to reside with patients, but with their financial results. And, that's even true in non-profit healthcare providers. That is seen in the form of cut corners, worse service, and an assault on already over-taxed labor via lower pay and higher workload (curiously, it never seems to impact outsized high-level executive compensation).

New submitter berghem shares a report from The Guardian: For the first time, researchers have formally shown that exposure to toxic PFAS increases the likelihood of death by cardiovascular disease, adding a new level of concern to the controversial chemicals' wide use. The findings are especially significant because proving an association with death by chemical exposure is difficult, but researchers were able to establish it by reviewing death records from northern Italy's Veneto region, where many residents for decades drank water highly contaminated with PFAS, also called "forever chemicals." Records further showed an increased likelihood of death from several cancers, but stopped short of establishing a formal association because of other factors. [...]

Veneto's drinking water was widely contaminated by a PFAS-production plant between 1985 and 2018. Researchers first found an excess of about 4,000 deaths during this period, or about one every three days. Part of the region was supplied with water from a different source, giving researchers the opportunity to compare records for tens of thousands of people who drank contaminated water and lived near those who did not. Though PFAS can affect the cardiovascular system in different ways, it is largely a problem because it produces stubbornly high and dangerous levels of cholesterol. The levels are difficult to control because they aren't caused by dietary or lifestyle choices that can be addressed with adjustments, but hormonal changes that affect the metabolism and the body's ability to control plaque in arteries. The study's authors suspect that post-traumatic stress disorder caused by the environmental disaster, which upended lives across the region, may also be contributing to circulatory disease. The evidence of a jump in kidney cancer was also "very clear," [said Annibale Biggeri, the peer-reviewed study's lead author, and a researcher with the University of Padua]. In the study's first five years, 16 cases were recorded, while 65 were recorded in the last five years. It also found elevated levels of testicular cancer during some time periods.

The records "showed clearly" that earlier life exposures led to higher levels of mortality, except for women who have multiple children. Previous research has found levels were higher in women with only one child. The chemicals accumulate in placentas and are passed on to children during pregnancy, which reduces levels in the body. Mortality levels among women who were of child-bearing age were generally lower, but increased in older women. The chemicals will be passed down to children for generations, said Laura Facciolo, a Veneto resident who drank contaminated water. She said the findings underscore the need to ban PFAS, and the disaster's injustice. The findings have been published in the journal Environmental Health.

An anonymous reader shares a report: Harvard geneticist David Sinclair, who has said his "biological age" is roughly a decade younger than his actual one, has put forward his largely unlined face as a spokesman for the longevity movement. The 54-year-old has built his brand on the idea that aging is a treatable disease. The notion has proven so seductive that legions of acolytes follow his online postings about his research and the cocktails of supplements he consumes to stave off the inevitable. His social-media accounts are a platform for assertions that his work is pushing nearer to a fountain of youth. He claimed last year that a gene therapy invented in his Harvard lab and being developed by a company he co-founded, Life Biosciences, had reversed aging and restored vision in monkeys. "Next up: age reversal in humans," he wrote on X and Instagram.

On Feb. 29, in the eyes of many other scientists working to unlock the mysteries of aging, he went too far. Another company he co-founded, Animal Biosciences, quoted him in a press release saying that a supplement it had developed had reversed aging in dogs. Scientists who study aging can't even agree on what it means to "reverse" aging, much less how to measure it. The response was swift and harsh. The Academy for Health and Lifespan Research, a group of about 60 scientists that Sinclair co-founded and led, was hit with a cascade of resignations by members outraged by his claims. One scientist who quit referred to Sinclair on X as a "snake oil salesman." Days later, in a tense video meeting, the academy's five other board members pressed Sinclair to resign as president. He contended that the press release contained an inaccurate quote, according to people who were in the meeting, but he later stepped down.

Sinclair's work is published regularly in top-tier scientific journals and has brought attention to an emerging field vying for credibility and funding. He has parlayed his research into hundreds of millions of dollars of investment in various companies, more than 50 patents and prominence as a longevity influencer. Along the way, his claims -- especially in his social-media posts, interviews and his book -- have drawn criticism from scientists who have accused him of hyping his research and extolling unproven products, including some from companies in which he had a financial interest. "My lab's ideas and findings are typically ahead of the curve, which is why some peers might feel the research is overstated at the time," Sinclair said to The Wall Street Journal in an email. "I stand behind my track record as a trusted scientist in one of the most competitive professions of all." He said he doesn't engage with social-media critics, including those calling him a snake oil salesman, and that many such comments are "nothing more than mischaracterizations."

Walmart isn't making enough money off its new health centers, so it decided to close up shop. From a report: The retail giant announced today that it'll shutter all 51 health centers it opened up across five states since 2019. Walmart is also getting rid of its virtual care program after acquiring telehealth provider MeMD in 2021. "We determined there is not a sustainable business model for us to continue," Walmart said in an announcement today.

"This is a difficult decision, and like others, the challenging reimbursement environment and escalating operating costs create a lack of profitability that make the care business unsustainable for us at this time," Walmart said today. It's an about-face from last year when Walmart said it planned to double its number of health clinics and expand into two new states in 2024.

Richard Speed reports via The Register: NASA's optical communications demonstration has hit 25 Mbps in a test transmitting engineering data back to Earth from 140 million miles (226 million kilometers) away. The payload is riding aboard the Psyche probe, which is headed for an asteroid of the same name. On December 11, when the spacecraft was 19 million miles (30 million kilometers) away, it reached 267 Mbps, which NASA described as "comparable to broadband internet download speeds."

However, as Psyche has continued on its trajectory, the distances have become greater, and the rate at which data can be transmitted and received has tumbled. At 140 million miles, the project's goal was to reach a lofty 1 Mbps. Instead, engineers managed to get 25 Mbps out of the demonstration. Earlier demonstrations tested the technology using preloaded data, such as a cat video. The latest experiment used a copy of engineering data also sent via Psyche's radio transmitter.

"We downlinked about 10 minutes of duplicated spacecraft data during a pass on April 8," said Meera Srinivasan, the project's operations lead at NASA's Jet Propulsion Laboratory (JPL) in Southern California. "Until then, we'd been sending test and diagnostic data in our downlinks from Psyche. This represents a significant milestone for the project by showing how optical communications can interface with a spacecraft's radio frequency comms system." The demonstrator is only along for the ride -- Psyche uses conventional radio technology for its mission. However, the demonstration does point to the potential for higher-bandwidth communications in future projects.

Crypto company Tether announced Monday that it has invested $200 million to acquire a majority stake in brain-computer interface company Blackrock Neurotech via its venture capital division Tether Evo. [The firm is not related to the asset management giant BlackRock.] CoinDesk reports: Blackrock Neurotech develops medical devices that are powered by brain signals and aims to help people impacted by paralysis and neurological disorders. The investment will fund the roll-out and commercialization of the medical devices and also for research and development purposes, the press release said. Tether is the company behind USDT, the largest stablecoin with a market cap of $110 billion. Recently, Tether established four divisions to expand beyond stablecoin issuance. "Tether has long believed in nurturing emerging technologies that have transformative capabilities, and the Brain-Computer-Interfaces of Blackrock Neurotech have the potential to open new realms of communication, rehabilitation, and cognitive enhancement," Paolo Ardoino, CEO of Tether, said in a statement.

RockDoctor (Slashdot reader #15,477) wants to tell you about a "new" star that will be visible to the naked eye — without a telescope — sometime before September: By "star", I do not mean "comet", "meteorite" or "firefly", but genuine [star] photons arriving here after about 3000 years in flight, causing your eyes to see a bright point on the nighttime sky. When it happens, the star will go from needing-a- telescope-or-good-binoculars-to-see, to being the 50th (or even 30th) brightest star in the sky.

For a week or so. Of course, it could just go full-on supernova, and be visible in daylight for a few weeks, and dominate the night sky for months. But that's unlikely.
Named "T Corona Borealis" (because it's the 20th variable star studied in the constellation "Corona Borealis") it's now visible all night, all year, for about 60% of the world's population (although normally you need binoculars to see it).

But RockDoctor writes that in 2016, "T CrB" (as it is known) has started showing "a similar pattern of changes" to what happened in the late 1930s when it became one of only 10 "recurring nova" known to science: In 2023, the pattern continued and the match of details got better. The star is expected to undergo another "eruption" — becoming one of the brightest few stars in the sky, within the next couple of months. Maybe the next couple of weeks. Maybe the next couple of hours....

Last week, astrophysicist Dr Becky Smethurst posted on the expected event in her monthly "Night Sky News" video blog. If you prefer your information in text not video, the AAVSO (variable star observers) posted a news alert for it's observers a while ago. They also hosted a seminar on the star, and why it's eruption is expected Real Soon Now, which is also on YouTube. A small selection of recent papers on the subject are posted here, which also includes information on how to get the most up-to-date brightness readings (unless you're a HST / JWST / Palomar / Hawai`i / Chile telescope operator). Yes, the "big guns" of astronomy have prepared their "TOO — Target Of Opportunity" plans, and will be dropping normal observations really quickly when the news breaks and slewing TOO the target.

You won't need your eclipse glasses for this. (Dr Becky's video covers where you can send them for re-use.) But you might want to photograph the appropriate part of the sky so you'll notice when the bomb goes off. Bomb? Did I say that the best model for what is happening is a thermonuclear explosion like a H-bomb the size of the Earth detonating? Well, that's the best analogue.
This CNN article includes a nice animation from NASA illustrating the multi-star interaction that's causing the event: The stars in the orbiting pair are close enough to each other that they interact violently. The red giant becomes increasingly unstable over time as it heats up, casting off its outer layers that land as matter on the white dwarf star. The exchange of matter causes the atmosphere of the white dwarf to gradually heat until it experiences a "runaway thermonuclear reaction," resulting in a nova [according to NASA]...

The NASAUniverse account on X, formerly known as Twitter, will provide updates about the outburst and its appearance.
The BBC reiterates the key data points — that "The rare cosmic event is expected to take place sometime before September 2024. When it occurs it will likely be visible to the naked eye. No expensive telescope will be needed to witness this cosmic performance, says NASA."

Long-time Slashdot reader lee1 shares "an interesting essay on the history of orthodoxy in quantum mechanics," published this week in Nature.

Its title? "'Shut up and calculate': how Einstein lost the battle to explain quantum reality." [T]he views of Danish physicist Niels Bohr came to dominate. Albert Einstein famously disagreed with him and, in the 1920s and 1930s, the two locked horns in debate. A persistent myth was created that suggests Bohr won the argument by browbeating the stubborn and increasingly isolated Einstein into submission. Acting like some fanatical priesthood, physicists of Bohr's 'church' sought to shut down further debate. They established the 'Copenhagen interpretation', named after the location of Bohr's institute, as a dogmatic orthodoxy.

My latest book Quantum Drama, co-written with science historian John Heilbron, explores the origins of this myth and its role in motivating the singular personalities that would go on to challenge it. Their persistence in the face of widespread indifference paid off, because they helped to lay the foundations for a quantum-computing industry expected to be worth tens of billions by 2040...
The Einstein-Bohr dispute raised larger issues, according to the article. "What is the purpose of physics? Is its main goal to gain ever-more-detailed descriptions and control of phenomena, regardless of whether physicists can understand these descriptions? Or, rather, is it a continuing search for deeper and deeper insights into the nature of physical reality?

"Einstein preferred the second answer," the articcle notes — and concluded that quantum mechanics was incomplete: Unlike Bohr, Einstein had established no school of his own. He had rather retreated into his own mind, in vain pursuit of a theory that would unify electromagnetism and gravity, and so eliminate the need for quantum mechanics altogether. He referred to himself as a "lone traveler". In 1948, U.S. theoretical physicist J. Robert Oppenheimer remarked to a reporter at Time magazine that the older Einstein had become "a landmark, but not a beacon".

Subsequent readings of this period in quantum history promoted a persistent and widespread suggestion that the Copenhagen interpretation had been established as the orthodox view... When learning quantum mechanics as a graduate student at Harvard University in the 1950s, US physicist N. David Mermin recalled vivid memories of the responses that his conceptual enquiries elicited from his professors, whom he viewed as 'agents of Copenhagen'. "You'll never get a PhD if you allow yourself to be distracted by such frivolities," they advised him, "so get back to serious business and produce some results. Shut up, in other words, and calculate."
The book argues that actually the physics world suffered from "a subtly different kind of orthodoxy" — an indifference to "foundational questions" outside the mainstream — but that the "myth" motivated projects and experiments.

"Although the wider physics community still considered testing quantum mechanics to be a fringe science and mostly a waste of time, exposing a hitherto unsuspected phenomenon — quantum entanglement and non-locality — was not..."