NASA Administrator Jared Isaacman has announced that astronauts on the upcoming Crew-12 and Artemis II missions will be allowed to carry iPhones and other modern smartphones into orbit and to the Moon -- a reversal of long-standing agency rules that had left crews relying on a 2016 Nikon DSLR and decade-old GoPros for the historic lunar flyby.

Isaacman framed the move as part of a broader push to challenge what he called bloated qualification requirements, where hardware approvals get mired in radiation characterization, battery thermal tests, outgassing reviews and vibration testing. "That operational urgency will serve NASA well as we pursue the highest-value science and research in orbit and on the lunar surface," he wrote.

Elon Musk told podcast host Dwarkesh Patel and Stripe co-founder John Collison that space will become the most economically compelling location for AI data centers in less than 36 months, a prediction rooted not in some exotic technical breakthrough but in the basic math of electricity supply: chip output is growing exponentially, and electrical output outside China is essentially flat.

Solar panels in orbit generate roughly five times the power they do on the ground because there is no day-night cycle, no cloud cover, no atmospheric loss, and no atmosphere-related energy reduction. The system economics are even more favorable because space-based operations eliminate the need for batteries entirely, making the effective cost roughly 10 times cheaper than terrestrial solar, Musk said. The terrestrial bottleneck is already real.

Musk said powering 330,000 Nvidia GB300 chips -- once you account for networking hardware, storage, peak cooling on the hottest day of the year, and reserve margin for generator servicing -- requires roughly a gigawatt at the generation level. Gas turbines are sold out through 2030, and the limiting factor is the casting of turbine vanes and blades, a process handled by just three companies worldwide.

Five years from now, Musk predicted, SpaceX will launch and operate more AI compute annually than the cumulative total on Earth, expecting at least a few hundred gigawatts per year in space. Patel estimated that 100 gigawatts alone would require on the order of 10,000 Starship launches per year, a figure Musk affirmed. SpaceX is gearing up for 10,000 launches a year, Musk said, and possibly 20,000 to 30,000.

European security officials believe two Russian space vehicles have intercepted the communications of at least a dozen key satellites over the continent. From a report: Officials believe that the likely interceptions, which have not previously been reported, risk not only compromising sensitive information transmitted by the satellites but could also allow Moscow to manipulate their trajectories or even crash them.

Russian space vehicles have shadowed European satellites more intensively over the past three years, at a time of high tension between the Kremlin and the West following Moscow's full-scale invasion of Ukraine. For several years, military and civilian space authorities in the West have been tracking the activities of Luch-1 and Luch-2 -- two Russian objects that have carried out repeated suspicious maneuvers in orbit.

Both vehicles have made risky close approaches to some of Europe's most important geostationary satellites, which operate high above the Earth and service the continent, including the UK, as well as large parts of Africa and the Middle East. According to orbital data and ground-based telescopic observations, they have lingered nearby for weeks at a time, particularly over the past three years. Since its launch in 2023, Luch-2 has approached 17 European satellites.

Ultra-processed foods (UPFs) have more in common with cigarettes than with fruit or vegetables, and require far tighter regulation, according to a new report. The Guardian: UPFs and cigarettes are engineered to encourage addiction and consumption, researchers from three US universities said, pointing to the parallels in widespread health harms that link both.

UPFs, which are widely available worldwide, are food products that have been industrially manufactured, often using emulsifiers or artificial colouring and flavours. The category includes soft drinks and packaged snacks such as crisps and biscuits. There are similarities in the production processes of UPFs and cigarettes, and in manufacturers' efforts to optimise the "doses" of products and how quickly they act on reward pathways in the body, according to the paper from researchers at Harvard, the University of Michigan and Duke University.

They draw on data from the fields of addiction science, nutrition and public health history to make their comparisons, published on 3 February in the healthcare journal the Milbank Quarterly. The authors suggest that marketing claims on the products, such as being "low fat" or "sugar free," are "health washing" that can stall regulation, akin to the advertising of cigarette filters in the 1950s as protective innovations that "in practice offered little meaningful benefit."

ClickOnThis writes: NASA has delayed the Artemis II launch to March of this year, after a wet dress-rehearsal uncovered a hydrogen leak. From the NASA article:

Scientists at the University of Utah have analyzed nearly a century's worth of human hair samples and found that lead concentrations dropped 100-fold after the EPA began cracking down on leaded gasoline and other lead-based products in the 1970s.

The findings, published in the Proceedings of the National Academy of Sciences, drew on hair collected from Utah residents -- some preserved in family scrapbooks going back generations. Lead levels peaked between 1916 and 1969 at around 100 parts per million, fell to 10 ppm by 1990, and dropped below 1 ppm by 2024. The decline largely tracks the phase-out of leaded gasoline after President Nixon established the EPA in 1970; before the agency acted, most gasolines contained about 2 grams of lead per gallon, releasing nearly 2 pounds of lead per person into the environment each year.

The study arrives amid the Trump administration's broader push to scale back the EPA. Lead regulations have not yet been targeted, but the authors note concerns about loosened enforcement of the 2024 Lead and Copper rule on replacing old lead pipes.

The EU "has switched on parts of its homegrown secure satellite communications network for the first time," reports Bloomberg, calling it part of a €10.6 billion push to "wean itself off US support amid growing tensions."

SpaceNews notes the new government program GOVSATCOM pools capacity from eight already on-oribit satellites from France, Spain, Italy, Greece and Luxembourg — both national and commercial. And they cite this prediction by EU Defense and Space Commissioner Andrius Kubilius.

The program could expand by 2027. "All member states can now have access to sovereign satellite communications — military and government, secure and resilient, built in Europe, operated in Europe, and under European control," [Kubilius said during his opening remarks at the European Space Conference]... Beginning in 2029, GOVSATCOM is expected to integrate with the 290 satellites in the Infrastructure for Resilience, Interconnectivity and Security by Satellite constellation, known as IRIS2, and be fully operational... "The goal is connectivity and security for all of Europe — guaranteed access for all member states and full European control."

Researchers at the University of Pennsylvania and University of Michigan "have created the world's smallest fully programmable, autonomous robots," according to a recent announcement.

The announcement calls them "microscopic swimming machines that can independently sense and respond to their surroundings, operate for months and cost just a penny each." Barely visible to the naked eye, each robot measures about 200 by 300 by 50 micrometers, smaller than a grain of salt. Operating at the scale of many biological microorganisms, the robots could advance medicine by monitoring the health of individual cells and manufacturing by helping construct microscale devices. Powered by light, the robots carry microscopic computers and can be programmed to move in complex patterns, sense local temperatures and adjust their paths accordingly... "We've made autonomous robots 10,000 times smaller," says Marc Miskin, Assistant Professor in Electrical and Systems Engineering at Penn Engineering and the papers' senior author. "That opens up an entirely new scale for programmable robots."
The announcement describes them as "the first truly autonomous, programmable robots at this scale" (as described in two recent academic articles). The team had to design a new propulsion system that utilized the unique locomotion physics in the microscopic realm, according to the university's announcement. So the robots "generate an electrical field that nudges ions in the surrounding solution." Those ions, in turn, push on nearby water molecules, animating the water around the robot's body. "It's as if the robot is in a moving river," says Miskin, "but the robot is also causing the river to move." The robots can adjust the electrical field that causes the effect, allowing them to move in complex patterns and even travel in coordinated groups, much like a school of fish, at speeds of up to one body length per second...

To be truly autonomous, a robot needs a computer to make decisions, electronics to sense its surroundings and control its propulsion, and tiny solar panels to power everything, and all that needs to fit on a chip that is a fraction of a millimeter in size. This is where David Blaauw's team at the University of Michigan came into action... The robots are programmed by pulses of light that also power them. Each robot has a unique address that allows the researchers to load different programs on each robot. "This opens up a host of possibilities," adds Blaauw, "with each robot potentially performing a different role in a larger, joint task."
Thanks to long-time Slashdot reader fahrbot-bot for sharing the news.

"A box full of viruses and bacteria has completed its return trip to the International Space Station," reports ScienceAlert, "and the changes these 'bugs' experienced in their travels could help us Earthlings tackle drug-resistant infections..." Scientists aboard the space station incubated different combinations of bacteria and phages for 25 days, while the research team led by biochemist Vatsan Raman carried out the same experiments in Madison, down here on Earth. "Space fundamentally changes how phages and bacteria interact: infection is slowed, and both organisms evolve along a different trajectory than they do on Earth," the researchers explain. In the weightlessness of space, bacteria acquired mutations in genes involved in the microbe's stress response and nutrient management. Their surface proteins also changed. After a slow start, the phages mutated in response, so they could continue binding to their victims.

The team found that certain space-specific phage mutations were especially effective at killing Earth-bound bacteria responsible for urinary tract infections (UTIs). More than 90 percent of the bacteria responsible for UTIs are antibiotic-resistant, making phage treatments a promising alternative.

TechCrunch reports: Jeff Bezos' space company Blue Origin is pausing its space tourism flights for "no less than two years" in order to focus all of its resources on upcoming missions to the moon, the company announced Friday. The decision puts a temporary halt on a program that Blue Origin has been using to fly humans past the Kármán line, the recognized boundary of space, for the last five years. Blue Origin made the announcement just a few weeks ahead of the expected third launch of its New Glenn mega-rocket, which is slated for late February...

The company said Friday that New Shepard has flown 38 times and carried 98 humans to space, along with more than 200 scientific and research payloads.
"The move is a clear sign that Blue Origin is going all in on its moon program as the company races with rival SpaceX," reports the Business Standard, "to be the first private company to land humans on the lunar surface for Nasa's Artemis program." Blue Origin holds a $3.4 billion contract with Nasa to develop its Blue Moon lander, designed to shuttle astronauts to and from the moon, with a landing originally targeted for 2029... The company is targeting the launch and landing of a cargo version of its lander as soon as this year, as a test ahead of eventually landing humans. Blue Origin has also presented an accelerated plan to Nasa for developing a lander that may be ready for carrying astronauts ahead of Starship, the large new rocket from Elon Musk's SpaceX.

Slashdot reader alternative_right writes: Quantum computers need extreme cold to work, but the very systems that keep them cold also create noise that can destroy fragile quantum information. Scientists in Sweden have now flipped that problem on its head by building a tiny quantum refrigerator that actually uses noise to drive cooling instead of fighting it. By carefully steering heat at unimaginably small scales, the device can act as a refrigerator, heat engine, or energy amplifier inside quantum circuits.

An anonymous reader quotes a report from Wired: About a decade ago, many media outlets -- including WIRED -- zeroed in on a weird trend at the intersection of mental health, drug science, and Silicon Valley biohacking: microdosing, or the practice of taking a small amount of a psychedelic drug seeking not full-blown hallucinatory revels but gentler, more stable effects. Typically using psilocybin mushrooms or LSD, the archetypal microdoser sought less melting walls and open-eye kaleidoscopic visuals than boosts in mood and energy, like a gentle spring breeze blowing through the mind. Anecdotal reports pitched microdosing as a kind of psychedelic Swiss Army knife, providing everything from increased focus to a spiked libido and (perhaps most promisingly) lowered reported levels of depression. It was a miracle for many. Others remained wary. Could 5 percent of a dose of acid really do all that?

A new, wide-ranging study by an Australian biopharma company suggests that microdosing's benefits may indeed be drastically overstated -- at least when it comes to addressing symptoms of clinical depression. A Phase 2B trial of 89 adult patients conducted by Melbourne-based MindBio Therapeutics, investigating the effects of microdosing LSD in the treatment of major depressive disorder, found that the psychedelic was actually outperformed by a placebo. Across an eight-week period, symptoms were gauged using the Montgomery-Asberg Depression Rating Scale (MADRS), a widely recognized tool for the clinical evaluation of depression. The study has not yet been published. But MindBio's CEO Justin Hanka recently released the top-line results on his LinkedIn, eager to show that his company was "in front of the curve in microdosing research."

He called it "the most vigorous placebo controlled trial ever performed in microdosing." It found that patients dosed with a small amount of LSD (ranging from 4 to 20g, or micrograms, well below the threshold of a mind-blowing hallucinogenic dose) showed observable upticks in feelings of well-being, but worse MADRS scores, compared to patients given a placebo in the form of a caffeine pill. (Because patients in psychedelic trials typically expect some kind of mind-altering effect, studies are often blinded using so-called "active placebos," like caffeine or methylphenidate, which have their own observable psychoactive properties.) This means, essentially, that a medium-strength cup of coffee may prove more beneficial in treating major depressive disorder than a tiny dose of acid. Good news for habitual caffeine users, perhaps, but less so for researchers (and biopharma startups) counting on the efficacy of psychedelic microdosing. "It's probably a nail in the coffin of using microdosing to treat clinical depression," Hanka says. "It probably improves the way depressed people feel -- just not enough to be clinically significant or statistically meaningful."

Researchers at the University of New South Wales are developing a "reverse solar panel" that generates small amounts of electricity at night by harvesting infrared heat radiated from Earth. "In the past, scientists have demonstrated that a 'thermoradiative diode' can convert infrared radiation directly into electricity; when used to convert heat from Earth, they exploit the temperature difference between Earth and the night sky, generating a current directly from heat," notes ExtremeTech. "This approach completely eliminates the need for heat to generate steam, though the resulting capacity is fairly low." From the report: The researchers estimate they could generate only about a watt per square meter, which isn't much. One reason for the low output is that the Earth's atmosphere lessens the heat differential that drives the generative process; in space, though, that's not an issue.

Now, researchers believe that the ability to generate power in the moments between direct sunlight could help power satellites. That could be especially true in deep space, where periods without sunlight can be longer, and sunlight is often weaker; in these situations, losing electricity to heat loss is unacceptable.

Many satellites already use heat to generate electricity, though with a much more rarified "thermoelectric generator" that uses rare, expensive materials like plutonium to create heat. With thermoradiative diodes, the heat source can be the Sun-warmed body of the satellite itself.

A large Swedish study of 100,000 women found that using AI to assist radiologists reading mammograms reduced the rate of aggressive "interval" breast cancers by 12%. CBC News reports: For the study -- published in Thursday's issue of the medical journal The Lancet -- more than 100,000 women had mammography screenings. Half were supported by AI and the rest had their mammograms reviewed by two different radiologists, a standard practice in much of Europe known as double reading. It is not typically used in Canada, where usually one radiologist checks mammograms.

The study looked at the rates of interval cancer, the term doctors use for invasive tumors that appear between routine mammograms. They can be harder to detect and studies have shown that they are more likely to be aggressive with a poorer prognosis. The rate of interval cancers decreased by 12 percent in the groups where the AI screening was implemented, the study showed. [...] Throughout the two-year study, the mammograms that were supported by AI were triaged into two different groups. Those that were determined to be low risk needed only one radiologist to examine them, while those that were considered high risk required two. The researchers reported that numerically, the AI-supported screening resulted in 11 fewer interval cancers than standard screening (82 versus 93, or 12 per cent).

"This is really a way to improve an overall screening test," [said lead author, Dr. Kristina Lang]. She acknowledged that while the study found a decrease in interval cancer, longer-term studies are needed to find out how AI-supported screening might impact mortality rates. The screenings for the study all took place at one centre in Sweden, which the researchers acknowledged is a limitation. Another is that the race and ethnicity of the participants were not recorded. The next step, Lang said, will be for Swedish researchers to determine cost-effectiveness.

The preprint repository arXiv will require all submissions to be written in English or accompanied by a full English translation starting February 11, a policy change that explicitly permits the use of AI translators even as research suggests large language models remain inconsistent at the task.

Until now, authors only needed to submit an abstract in English. ArXiv hosts nearly 3 million preprints and receives more than 20,000 submissions monthly, though just 1% are in languages other than English.

Ralph Wijers, chair of arXiv's editorial advisory council, advises authors to verify any AI-generated translations. "Our own experience is that AI translation is good but not good enough," he says. A 2025 study from ByteDance Seed and Peking University ranked 20 LLMs on translation quality between Chinese and English; GPT-5-high scored nearly 77, just below the human expert benchmark of 80, but most models including GPT-4o, Claude 4, and Deepseek-V3 scored under 60.

Scientific American's Elizabeth Anne Brown recently "polled the great art houses of Europe" about whether they'd had any recent experiences with mold in their collections. Despite the stigma that keeps many institutions silent, she found that extremophile "xerophilic" molds are quietly spreading through museums and archives, thriving in low-humidity, tightly sealed storage and damaging everything from textiles and wood to manuscripts and stone. An anonymous Slashdot reader shares an excerpt from the article: Mold is a perennial scourge in museums that can disfigure and destroy art and artifacts. [...] Consequently, mold is spoken of in whispers in the museum world. Curators fear that even rumors of an infestation can hurt their institution's funding and blacklist them from traveling exhibitions. When an infestation does occur, it's generally kept secret. The contract conservation teams that museums hire to remediate invasive mold often must vow confidentiality before they're even allowed to see the damage.

But a handful of researchers, from in-house conservators to university mycologists, are beginning to compare notes about the fungal infestations they've tackled in museum storage depots, monastery archives, crypts and cathedrals. A disquieting revelation has emerged from these discussions: there's a class of molds that flourish in low humidity, long believed to be a sanctuary from decay. By trying so hard to protect artifacts, we've accidentally created the "perfect conditions for [these molds] to grow," says Flavia Pinzari, a mycologist at the Council of National Research of Italy. "All the rules for conservation never considered these species."

These molds -- called xerophiles -- can survive in dry, hostile environments such as volcano calderas and scorching deserts, and to the chagrin of curators across the world, they seem to have developed a taste for cultural heritage. They devour the organic material that abounds in museums -- from fabric canvases and wood furniture to tapestries. They can also eke out a living on marble statues and stained-glass windows by eating micronutrients in the dust that accumulates on their surfaces. And global warming seems to be helping them spread. Most frustrating for curators, these xerophilic molds are undetectable by conventional means. But now, armed with new methods, several research teams are solving art history cold cases and explaining mysterious new infestations...

The xerophiles' body count is rising: bruiselike stains on Leonardo da Vinci's most famous self-portrait, housed in Turin. Brown blotches on the walls of King Tut's burial chamber in Luxor. Pockmarks on the face of a saint in an 11th-century fresco in Kyiv. It's not enough to find and identify the mold. Investigators are racing to determine the limits of xerophilic life and figure out which pieces of our cultural heritage are at the highest risk of infestation before the ravenous microbes set in.

For decades, researchers have noted that cancer and Alzheimer's disease are rarely found in the same person, fuelling speculation that one condition might offer some degree of protection from the other. Nature: Now, a study in mice provides a possible molecular solution to the medical mystery: a protein produced by cancer cells seems to infiltrate the brain, where it helps to break apart clumps of misfolded proteins that are often associated with Alzheimer's disease. The study, which was 15 years in the making, was published on 22 January in Cell and could help researchers to design drugs to treat Alzheimer's disease.

"They have a piece of the puzzle," says Donald Weaver, a neurologist and chemist at the Krembil Research Institute at the University of Toronto in Canada, who was not involved in the study. "It's not the full picture by any stretch of the imagination. But it's an interesting piece." [...] A 2020 meta-analysis of data from more than 9.6 million people found that cancer diagnosis was associated with an 11% decreased incidence of Alzheimer's disease. It has been a difficult relationship to unpick: researchers must control for a variety of external factors. For example, people might die of cancer before they are old enough to develop symptoms of Alzheimer's disease, and some cancer treatments can cause cognitive difficulties, which could obscure an Alzheimer's diagnosis.

Early hominins in Europe were creating tools from raw materials hundreds of thousands of years before Homo sapiens arrived there, two new studies indicate, pushing back the established time for such activity. From a report: The evidence includes a 500,000-year-old hammer made of elephant or mammoth bone, excavated in southern England, and 430,000-year-old wooden tools found in southern Greece -- the earliest wooden tools on record.

The findings suggest that early humans possessed sophisticated technological skills, the researchers said. Katerina Harvati, a paleoanthropologist at the University of Tubingen in Germany and a lead author of the wooden-tool paper, which was published on Monday in the journal PNAS, said the discoveries provided insight into the prehistoric origins of human intelligence. Silvia Bello, a paleoanthropologist at London's Natural History Museum and an author on the elephant-bone study, which was published last week in Science Advances, concurred.

The artifacts in both studies, recovered from coal-mine sites, were probably produced by early Neanderthals or a preceding species, Homo heidelbergensis. Homo sapiens emerged in Africa more than 300,000 years ago, and the oldest evidence of them in Europe is a 210,000-year-old fossil unearthed in Greece. By the time Homo sapiens established themselves in Britain 40,000 years ago, other hominins had already lived there for nearly a million years.

An anonymous reader quotes a report from Universe Today: There's a bright side to every situation. In 2032, the Moon itself might have a particularly bright side if it is blasted by a 60-meter-wide asteroid. The chances of such an event are still relatively small (only around 4%), but non-negligible. And scientists are starting to prepare both for the bad (massive risks to satellites and huge meteors raining down on a large portion of the planet) and the good (a once in a lifetime chance to study the geology, seismology, and chemical makeup of our nearest neighbor). A new paper from Yifan He of Tsinghua University and co-authors, released in pre-print form on arXiv, looks at the bright side of all of the potential interesting science we can do if a collision does, indeed, happen. If Asteroid 2024 YR4 were to hit the Moon, researchers would be able to watch a large lunar impact unfold in real time and collect data on extreme collisions that usually exist only in computer models. Telescopes could follow how a newly formed crater and its pool of molten rock cool and solidify, while the resulting moonquake would offer a clearer picture of its internal structure via the seismic waves it sends through the Moon.

Furthermore, researchers could compare the fresh crater to older ones to improve our understanding of the Moon's long history of impacts. Debris blasted off the surface could even deliver small lunar samples to Earth.

Altogether, it would be a once-in-a-generation chance to learn more about how the Moon/rocky worlds respond to powerful impacts.

alternative_right shares a report from Phys.org: New findings from NASA's Perseverance rover have revealed evidence of wave-formed beaches and rocks altered by subsurface water in a Martian crater that once held a vast lake -- considerably expanding the timeline for potential habitability at this ancient site. In an international study led by Imperial College London, researchers uncovered that the so-called 'Margin unit' in Mars's Jezero crater preserves evidence of extensive underground interactions between rock and water, as well as the first definitive traces of an ancient shoreline.

These are compelling indicators that habitable, surface water conditions persisted in the crater (home to a large lake around 3.5 billion years ago) further back in time than previously thought. "Shorelines are habitable environments on Earth, and the carbonate minerals that form here can naturally seal in and preserve information about the ancient environment," said lead author Alex Jones, a Ph.D. researcher in the Department of Earth Science and Engineering (ESE) at Imperial. The findings have been published in the Journal of Geophysical Research: Planets.

An anonymous reader quotes a report from Science.org: Some 10,109 doctoral-trained experts in science and related fields left their jobs last year as President Donald Trump dramatically shrank the overall federal workforce. That exodus was only 3% of the 335,192 federal workers who exited last year but represents 14% of the total number of Ph.D.s in science, technology, engineering, and math (STEM) or health fields employed at the end of 2024 as then-President Joe Biden prepared to leave office. The numbers come from employment data posted earlier this month by the White House Office of Personnel Management (OPM). At 14 research agencies Science examined in detail, departures outnumbered new hires last year by a ratio of 11 to one, resulting in a net loss of 4224 STEM Ph.D.s. The graphs that follow show the impact is particularly striking at such scientist-rich agencies as the National Science Foundation (NSF). But across the government, these departing Ph.D.s took with them a wealth of subject matter expertise and knowledge about how the agencies operate.

[...] Science's analysis found that reductions in force, or RIFs, accounted for relatively few departures in 2025. Only at the Centers for Disease Control and Prevention, where 16% of the 519 STEM Ph.D.s who left last year got pink RIF slips, did the percentage exceed 6%, and some agencies reported no STEM Ph.D. RIFs in 2025. At most agencies, the most common reasons for departures were retirements and quitting. Although OPM classifies many of these as voluntary, outside forces including the fear of being fired, the lure of buyout offers, or a profound disagreement with Trump policies, likely influenced many decisions to leave. Many Ph.D.s departed because their position was terminated.

Scientists have released DinoTracker, a free AI-powered app that identifies dinosaur footprints by analyzing shape patterns rather than relying on potentially flawed historical labels. "When we find a dinosaur footprint, we try to do the Cinderella thing and find the foot that matches the slipper," said Prof Steve Brusatte, a co-author of the work. "But it's not so simple, because the shape of a dinosaur footprint depends not only on the shape of the dinosaur's foot but also the type of sand or mud it was walking through, and the motion of its foot." The Guardian reports: [...] Brusatte, [Dr Gregor Hartmann, the first author of the new research from Helmholtz-Zentrum in Germany] and colleagues fed their AI system with 2,000 unlabelled footprint silhouettes. The system then determined how similar or different the imprints were from each other by analysing a range of features it identified as meaningful. The researchers discovered these eight features reflected variations in the imprints' shapes, such as the spread of the toes, amount of ground contact and heel position. The team have turned the system into a free app called DinoTracker that allows users to upload the silhouette of a footprint, explore the seven other footprints most similar to it and manipulate the footprint to see how varying the eight features can affect which other footprints are deemed most similar. Hartmann said that at present experts had to double check if factors such as the material the footprints were made in, and their age, matched the scientific hypothesis, but the system clustered prints with those expected from classifications made by human experts about 90% of the time. The findings have been published in the journal PNAS.

OpenAI has launched Prism, a free scientific research app that aims to do for scientific writing what coding agents did for programming. Engadget reports: Prism builds on Crixet, a cloud-based LaTeX platform the company is announcing it acquired today. For the uninitiated, LaTeX is a typesetting system for formatting scientific documents and journals. Nearly the entire scientific community relies on LaTeX, but it can make some tasks, such as drawing diagrams through TikZ commands, time-consuming to do. Beyond that, LaTeX is just one of the software tools a scientist might turn to when preparing to publish their research.

That's where Prism comes into the picture. Like Crixet before it, the app offers robust LaTeX editing and a built-in AI assistant. Where previously it was Crixet's own Chirp agent, now it's GPT-5.2 Thinking. OpenAI's model can help with more than just formatting journals -- in a press demo, an OpenAI employee used it to find and incorporate scientific literature that was relevant to the paper they were working on, with GPT-5.2 automating the process of writing the bibliography. [...] Later in the same demo, the OpenAI employee used Prism to generate a lesson plan for a graduate course on general relativity, as well as a set of problems for students to solve. OpenAI envisions these features helping scientists and professors spend less time on the more tedious tasks in their professions.

The Bulletin of the Atomic Scientists on Tuesday set their symbolic Doomsday Clock to 85 seconds before midnight -- the closest the timepiece has ever been to the theoretical point of annihilation since scientists created it during the Cold War in 1947.

The clock now stands four seconds nearer than last year's setting, and this marks the third time in four years that the Bulletin has moved it closer to midnight. The Chicago-based nonprofit pointed to aggressive behavior by nuclear powers Russia, China and the United States, fraying nuclear arms control frameworks, ongoing conflicts in Ukraine and the Middle East, unregulated AI integration into military systems, and climate change.

"In terms of nuclear risks, nothing in 2025 trended in the right direction," said Alexandra Bell, the Bulletin's president and CEO. The last remaining nuclear arms pact between the US and Russia, the New START treaty, expires on February 5.

OpenAI launched a dedicated team in October called OpenAI for Science, led by vice president Kevin Weil, that aims to make scientists more productive -- but Weil admitted in an interview with MIT Technology Review that the LLM cannot yet produce novel discoveries and says that's not currently the mission.

UC Berkeley statistician Nikita Zhivotovskiy, who has used LLMs since the first ChatGPT, told the publication: "So far, they seem to mainly combine existing results, sometimes incorrectly, rather than produce genuinely new approaches."

"I don't think models are there yet," Weil admitted. "Maybe they'll get there. I'm optimistic that they will." The models excel at surfacing forgotten solutions and finding connections across fields, but Weil says the bar for accelerating science doesn't require "Einstein-level reimagining of an entire field."

GPT-5 has read substantially every paper written in the last 30 years, he says, and can bring together analogies from unrelated disciplines. That accumulation of existing knowledge -- helping scientists avoid struggling on problems already solved -- is itself an acceleration.

"NASA remains confident it has a handle on the problem and the vehicle can bring the crew home safely," reports CNN.

But "When four astronauts begin a historic trip around the moon as soon as February 6, they'll climb aboard NASA's 16.5-foot-wide Orion spacecraft with the understanding that it has a known flaw — one that has some experts urging the space agency not to fly the mission with humans on board..."

The issue relates to a special coating applied to the bottom part of the spacecraft, called the heat shield... This vital part of the Orion spacecraft is nearly identical to the heat shield flown on Artemis I, an uncrewed 2022 test flight. That prior mission's Orion vehicle returned from space with a heat shield pockmarked by unexpected damage — prompting NASA to investigate the issue. And while NASA is poised to clear the heat shield for flight, even those who believe the mission is safe acknowledge there is unknown risk involved. "This is a deviant heat shield," said Dr. Danny Olivas, a former NASA astronaut who served on a space agency-appointed independent review team that investigated the incident. "There's no doubt about it: This is not the heat shield that NASA would want to give its astronauts." Still, Olivas said he believes after spending years analyzing what went wrong with the heat shield, NASA "has its arms around the problem..."

"I think in my mind, there's no flight that ever takes off where you don't have a lingering doubt," Olivas said. "But NASA really does understand what they have. They know the importance of the heat shield to crew safety, and I do believe that they've done the job." Lakiesha Hawkins, the acting deputy associate administrator for NASA's Exploration Systems Development Mission Directorate, echoed that sentiment in September, saying, "from a risk perspective, we feel very confident." And Reid Wiseman, the astronaut set to command the Artemis II mission, has expressed his confidence. "The investigators discovered the root cause, which was the key" to understanding and solving the heat shield issue, Wiseman told reporters last July. "If we stick to the new reentry path that NASA has planned, then this heat shield will be safe to fly."

Others aren't so sure. "What they're talking about doing is crazy," said Dr. Charlie Camarda, a heat shield expert, research scientist and former NASA astronaut. Camarda — who was also a member of the first space shuttle crew to launch after the 2003 Columbia disaster — is among a group of former NASA employees who do not believe that the space agency should put astronauts on board the upcoming lunar excursion. He said he has spent months trying to get agency leadership to heed his warnings to no avail... Camarda also emphasized that his opposition to Artemis II isn't driven by a belief it will end with a catastrophic failure. He thinks it's likely the mission will return home safely. More than anything, Camarda told CNN, he fears that a safe flight for Artemis II will serve as validation for NASA leadership that its decision-making processes are sound. And that's bound to lull the agency into a false sense of security, Camarda warned.
CNN adds that Dr. Dan Rasky, an expert on advanced entry systems and thermal protection materials who worked at NASA for more than 30 years, also does not believe NASA should allow astronauts to fly on board the Artemis II Orion capsule.

And "a crucial milestone could be days away as Artemis program leaders gather for final risk assessments and the flight readiness review," when top NASA brass determine whether the Artemis II rocket and spacecraft are ready to take off with a human crew.

A clinical trial found that seniors at high stroke risk who wore an Apple Watch were four times more likely to have hidden heart rhythm disorders detected than those receiving standard care. The researchers noted that over half the time, these smartwatch wearers with heart rhythm problems hadn't shown any symptoms prior to diagnosis. From U.S. News & World Report: Later editions of Apple Watches are equipped with two functions that can help monitor heart health -- photoplethysmography (PPG), which tracks heart rate, and a single-lead electrocardiogram (ECG) that monitors heart rhythm. "Using smartwatches with PPG and ECG functions aids doctors in diagnosing individuals unaware of their arrhythmia, thereby expediting the diagnostic process," said senior researcher Dr. Michiel Winter, a cardiologist at Amsterdam University Medical Center in The Netherlands. "Our findings suggest a potential reduction in the risk of stroke, benefiting both patients and the health care system by reducing costs," Winter said in a news release.

[...] Smartwatches are much easier than other wearable devices for detecting irregular heart rhythms [...]. These other means require people to wear sticky leads, carry around bulky monitors or even receive short-term implants. Lead researcher Nicole van Steijn, a doctoral candidate at Amsterdam UMC, noted that wearables that track both the pulse and electrical activity have been around for a while. "However, how well this technology works for the screening of patients at elevated risk for atrial fibrillation had not yet been investigated in a real-world setting,"she said in a news release. The findings have been published in the Journal of the American College of Cardiology.

A new study shows that earthquake monitoring networks can track falling space debris by detecting the sonic booms produced during atmospheric reentry, sometimes more accurately than radar. The Associated Press reports: Scientists reported Thursday that seismic readings from sonic booms that were generated when a discarded module from a Chinese crew capsule reentered over Southern California in 2024 allowed them to place the object's path nearly 20 miles (30 kilometers) farther south than radar had predicted from orbit. Using this method to track uncontrolled objects plummeting at supersonic speeds, they said, could help recovery teams reach any surviving pieces more quickly -- crucial if the debris is dangerous.

"The problem at the moment is we can track stuff very well in space," said Johns Hopkins University's Benjamin Fernando, the lead researcher. "But once it gets to the point that it's actually breaking up in the atmosphere, it becomes very difficult to track." His team's findings, published in the journal Science, focus on just one debris event. But the researchers already have used publicly available data from seismic networks to track a few dozen other reentries, including debris from three failed SpaceX Starship test flights in Texas. [...]

Fernando is looking to eventually publish a catalog of seismically tracked, entering space objects, while improving future calculations by factoring in the wind's effect on falling debris. In a companion article in Science, Los Alamos National Laboratory's Chris Carr, who was not involved in the study, said further research is needed to reduce the time between an object's final plunge and the determination of its course. For now, Carr said this new method "unlocks the rapid identification of debris fall-out zones, which is key information as Earth's orbit is anticipated to become increasingly crowded with satellites, leading to a greater influx of space debris."

Bruce66423 shares a report from the Guardian: New filtration technology developed by Rice University may absorb some Pfas "forever chemicals" at 100 times the rate than previously possible, which could dramatically improve pollution control and speed remediations. Researchers also say they have also found a way to destroy Pfas, though both technologies face a steep challenge in being deployed on an industrial scale. A new peer-reviewed paper details a layered double hydroxide (LDH) material made from copper and aluminum that absorbs long-chain Pfas up to 100 times faster than commonly used filtration systems.

[...] [Michael Wong, director of Rice's Water Institute, a Pfas research center] said Rice's non-thermal process works by soaking up and concentrating Pfas at high levels, which makes it possible to destroy them without high temperatures. The LDH material Rice developed is a variation of similar materials previously used, but researchers replaced some aluminum atoms with copper atoms. The LDH material is positively charged and the long-chain Pfas are negatively charged, which causes the material to attract and absorb the chemicals, Wong said. [...]

Pfas are virtually indestructible because their carbon atoms are bonded with fluoride, but Rice found that the bonds could be broken if the chemicals in the material were heated to 400-500C -- a relatively low temperature. The fluoride gets trapped in the LDH material and is bonded to calcium. The leftover calcium-fluoride material is safe and can be disposed of in a landfill, Wong said. The process works with some long-chain Pfas that are among the most common water pollutants, and it also absorbed some smaller Pfas that are commonplace.

Wong said he is confident the material can be used to absorb a broad array of Pfas, especially if they are negatively charged. Most new Pfas elimination systems fail to work at an industrial scale. Wong said the new material has an advantage because its absorption rate is so strong, it can be used repeatedly and it is in a "drop in material," meaning it can be used with existing filtration infrastructure. That eliminates one of the major cost barriers.

Marcel Bucher, a professor of plant sciences at the University of Cologne in Germany, lost two years of carefully structured academic work in an instant when he temporarily disabled ChatGPT's "data consent" option in August to test whether the AI tool's functions would still work without providing OpenAI his data. All his chats were permanently deleted and his project folders emptied without any warning or undo option, he wrote in a post on Nature.

Bucher, a ChatGPT Plus subscriber paying $20 per month, had used the platform daily to draft grant applications, prepare teaching materials, revise publication drafts and create exams. He contacted OpenAI support, first receiving responses from an AI agent before a human employee confirmed the data was permanently lost and unrecoverable. OpenAI cited "privacy by design" as the reason, telling Nature it does provide a confirmation prompt before users permanently delete a chat but maintains no backups.

Bucher said he had saved partial copies of some materials, but the underlying prompts, iterations, and project folders -- what he describes as the intellectual scaffolding behind his finished work -- are gone forever.

The United States formally withdrew from the World Health Organization on Thursday, making good on an executive order that President Trump issued on his first day in office pledging to leave the international organization that coordinates global responses to public health threats. The New York Times: While the United States is walking away from the organization, a senior official with the Department of Health and Human Services told reporters on Thursday that the Trump administration was considering some type of narrow, limited engagement with W.H.O. global networks that track infectious diseases, including influenza.

As a W.H.O. member, the United States long sent scientists from the Centers for Disease Control and Prevention to participate in international decision-making about which strains to include in the flu vaccine. A W.H.O. meeting on next year's vaccine is scheduled for February. The official said the Trump administration would soon disclose how or whether it will participate.

On Thursday, the administration said that all U.S. government funding to the organization had been terminated, and that all assigned federal employees and contractors had been recalled from its Geneva headquarters and its offices worldwide.

alternative_right shares a report from ScienceAlert: A systematic review of 85 studies has now found good reason to differentiate between 'active' sitting, like playing cards or reading, and 'passive' sitting, like watching TV. [...] "Total sitting time has been shown to be related to brain health; however, sitting is often treated as a single entity, without considering the specific type of activity," explains public health researcher Paul Gardiner from the University of Queensland in Australia. "Most people spend many hours sitting each day, so the type of sitting really matters ... These findings show that small everyday choices -- like reading instead of watching television -- may help keep your brain healthier as you age."

Across numerous studies, Gardiner and colleagues found that active sitting activities, like reading, playing card games, and using a computer, showed "overwhelmingly positive associations with cognitive health, enhancing cognitive functions such as executive function, situational memory, and working memory." Meanwhile, passive sitting was most consistently associated with negative cognitive outcomes, including increased risk of dementia. The study was published in the Journal of Alzheimer's Disease.

Ancient Slashdot reader erice shares the findings from a recent study showing that while AI helped researchers publish more often and boosted their careers, the resulting papers were, on average, less useful. "You have this conflict between individual incentives and science as a whole," says James Evans, a sociologist at the University of Chicago who led the study. From a recent IEEE Spectrum article: To quantify the effect, Evans and collaborators from the Beijing National Research Center for Information Science and Technology trained a natural language processing model to identify AI-augmented research across six natural science disciplines. Their dataset included 41.3 million English-language papers published between 1980 and 2025 in biology, chemistry, physics, medicine, materials science, and geology. They excluded fields such as computer science and mathematics that focus on developing AI methods themselves. The researchers traced the careers of individual scientists, examined how their papers accumulated attention, and zoomed out to consider how entire fields clustered or dispersed intellectually over time. They compared roughly 311,000 papers that incorporated AI in some way -- through the use of neural networks or large language models, for example -- with millions of others that did not.

The results revealed a striking trade-off. Scientists who adopt AI gain productivity and visibility: On average, they publish three times as many papers, receive nearly five times as many citations, and become team leaders a year or two earlier than those who do not. But when those papers are mapped in a high-dimensional "knowledge space," AI-heavy research occupies a smaller intellectual footprint, clusters more tightly around popular, data-rich problems, and generates weaker networks of follow-on engagement between studies. The pattern held across decades of AI development, spanning early machine learning, the rise of deep learning, and the current wave of generative AI. "If anything," Evans notes, "it's intensifying." [...] Aside from recent publishing distortions, Evans's analysis suggests that AI is largely automating the most tractable parts of science rather than expanding its frontiers.

NASA Langley has initiated the U.S. government software approval process to install CapFrameX, a benchmarking tool popular among PC gaming enthusiasts, on its cockpit simulators used to train test pilots. The space agency reached out to CapFrameX, not the other way around, according to an X post from the company.

NASA builds custom flight simulators from scratch for experimental aircraft like the X-59, a supersonic jet designed to produce a quiet thump rather than the traditional sonic boom. The agency's simulator teams replicate every switch, dial and knob to match the actual cockpit layout, helping pilots build muscle memory before flying the real thing.

An anonymous reader shares a report: Moderna does not plan to invest in new late-stage vaccine trials because of growing opposition to immunizations from U.S. officials, CEO Stephane Bancel said in an interview with Bloomberg TV on Thursday. "You cannot make a return on investment if you don't have access to the U.S. market," Bancel told Bloomberg TV on the sidelines of the World Economic Forum in Davos. Bancel said regulatory delays and little support from the authorities make the market size "much smaller."

An anonymous reader shares a report: An airport made of bamboo? A tower reaching 20 metres high? For many years, bamboo has been mostly known as the favourite food of giant pandas, but a group of engineers say it's time we took it seriously as a building material, too.

This week the Institution of Structural Engineers called for architects to be "bamboo-ready" as they published a manual for designing permanent buildings made of the material, in an effort to encourage low-carbon construction and position bamboo as a proper alternative to steel and concrete.

Bamboo has already been used for a number of boundary-pushing projects around the world. At Terminal 2 of Kempegowda international airport in Bengaluru, India, bamboo tubes make up the ceiling and pillars. The Ninghai bamboo tower in north-east China, which is more than 20 metres tall, is claimed to be the world's first high-rise building made using engineered bamboo.

At the Green School in Bali, a bamboo-made arc serves as the gymnasium and a striking example of how the material is reshaping sustainable architecture. The use of composite bamboo shear walls have proved to be resilient against earthquakes and extreme weather in countries such as Colombia and the Philippines, where sustainable, disaster-resilient housing has been built with locally sourced materials.

Blue Origin has unveiled an enterprise-focused satellite internet network called TeraWave, which promises up to 6 Tbps speeds via a mixed low- and medium-Earth orbit constellation. TechCrunch reports: The TeraWave constellation will use a mix of 5,280 satellites in low-Earth orbit and 128 in medium-Earth orbit, and Blue Origin plans to deploy the first ones in late 2027. It's not immediately clear how long Blue Origin expects it will take to build out the whole network. The low-Earth orbit satellites Blue Origin is building will use RF connectivity and have a max data transfer speed of 144 Gbps, while the medium-Earth variety will use an optical link that can achieve the much higher 6 Tbps speed. For reference, SpaceX's Starlink currently maxes out at 400 Mbps -- though it plans to launch upgraded satellites that will offer 1 Gbps data transfer in the future. "We identified an unmet need with customers who were seeking enterprise-grade internet access with higher speeds, symmetrical upload/download speeds, more redundancy, and rapid scalability for their networks. TeraWave solves for these problems," Blue Origin said in a statement.

An anonymous reader quotes a report from the New York Times: Weight-loss drugs like Ozempic have transformed millions of lives with easily administered treatments and quick results. Now it turns out the dropped pounds may have a surprising perk for airlines, too: lower fuel costs, as slimmer passengers lighten their aircraft's loads.

According to a study published last week by Jefferies, a financial services firm, the four largest U.S. carriers -- American Airlines, Delta Air Lines, Southwest Airlines and United Airlines -- could together save as much as $580 million per year on fuel thanks to weight-loss drugs, known as GLP-1s. One in eight U.S. adults said they were taking a GLP-1 in a November survey published by KFF, a nonprofit health research group. Fuel is among airlines' largest expenses. The Jefferies study estimates that the four airlines will together consume 16 billion gallons of fuel in 2026 at a total cost of $38.6 billion, nearly 20 percent of their total expenses.

The savings from skinnier passengers would amount to just 1.5 percent of fuel costs. But airlines and pilots must scrutinize even the smallest changes to a plane's weight and balance, and a lighter payload means each jet burns less fuel to generate the thrust necessary to fly. Investors could also stand to benefit: The researchers estimated that a 2 percent reduction in aircraft weight could boost earnings per share by about 4 percent. "Please note savings are before any lost snack sales," the Jefferies analysts added.

New research from Cornell University has tracked how households change their spending after someone starts taking GLP-1 medications like Ozempic and Wegovy, and the numbers are material enough to explain why food industry earnings calls keep blaming everything except the obvious culprit.

The study analyzed transaction data from 150,000 households linked to survey responses on medication adoption. Households cut grocery spending by 5.3% within six months of a member starting GLP-1s; high-income households cut by 8.2%. Fast food spending fell 8.0%. Savory snacks took the biggest hit at 10.1%, followed by sweets and baked goods. Yogurt was the only category to see a statistically significant increase.

As of July 2024, 16.3% of U.S. households had at least one GLP-1 user. Nearly half of adopters reported taking the medication specifically for weight loss rather than diabetes management. About 34% of users discontinue within the sample period, and when they stop, candy and chocolate purchases rise 11.4% above pre-adoption levels.

Further reading: Weighing the Cost of Smaller Appetites.

An anonymous reader quotes a report from U.S. News & World Report: U.S. health officials plan a new study investigating whether radiation from cellphones may affect human health. A spokesperson for the U.S. Department of Health and Human Services (HHS) said the research will examine electromagnetic radiation and possible gaps in current science. The initiative stems from numerous concerns raised by Health Secretary Robert F. Kennedy Jr., who has linked cellphone use to neurological damage and cancer.

"The [U.S. Food and Drug Administration] removed webpages with old conclusions about cell phone radiation while HHS undertakes a study on electromagnetic radiation and health research to identify gaps in knowledge, including on new technologies, to ensure safety and efficacy," HHS spokesman Andrew Nixon said. He added that the study was directed in a strategy report from the president's Make America Healthy Again Commission.

Some webpages from the FDA and the U.S. Centers for Disease Control and Prevention say current research does not show clear harm from cellphone radiation. The National Cancer Institute, which is part of the National Institutes of Health, says that "evidence to date suggests that cellphone use does not cause brain or other kinds of cancer in humans.".

He Jiankui, the Chinese scientist who served three years in prison after creating the world's first gene-edited babies in 2018, is now preparing for another attempt at germline editing -- this time to prevent Alzheimer's disease. In an interview, He said he has established an independent lab in south Beijing and raised $7 million from private donors to fund research into introducing a protective genetic mutation found in Icelandic populations.

The three girls born from his original experiment are now in primary school and healthy, according to He. Since germline editing remains banned in China, He said he plans to conduct future human trials in South Africa and has already spoken with contacts there. He estimates he needs two more years to complete mouse and monkey studies before seeking regulatory approval abroad. He said his lab is developing techniques to make 12 simultaneous genetic edits in a single embryo, targeting genes associated with cancer, cardiovascular disease, HIV, and other conditions. He is currently working on human cell lines and has not yet begun embryo experiments.

A new study from Scripps Institution of Oceanography finds that factoring ocean damage into climate economics nearly doubles the estimated global cost of climate change, adding close to $2 trillion per year from losses to fisheries, coral reefs, and coastal infrastructure. "It is the first time a social cost of carbon (SCC) assessment -- a key measure of economic harm caused by climate change -- has included damages to the ocean," reports Inside Climate News. From the report: "For decades, we've been estimating the economic cost of climate change while effectively assigning a value of zero to the ocean," said Bernardo Bastien-Olvera, who led the study during his postdoctoral fellowship at Scripps. "Ocean loss is not just an environmental issue, but a central part of the economic story of climate change."

The social cost of carbon is an accounting method for working out the monetary cost of each ton of carbon dioxide released into the atmosphere. "[It] is one of the most efficient tools we have for internalizing climate damages into economic decision-making," said Amy Campbell, a United Nations climate advisor and former British government COP negotiator. Calculations have historically been used by international organizations and state departments like the U.S. Environmental Protection Agency to assess policy proposals -- though a 2025 White House memo from the Trump administration instructed federal agencies to ignore the data during cost-benefit analyses unless required by law. "It becomes politically contentious when deciding whose damages are counted, which sectors are included and most importantly how future and retrospective harms are valued," Campbell said.

Excluding ocean harm, the social cost of carbon is $51 per ton of carbon dioxide emitted. This increases to $97.20 per ton when the ocean, which covers 70 percent of the planet, is included. In 2024, global CO2 emissions were estimated to be 41.6 billion tons, making the 91 percent cost increase significant. Using greenhouse gas emission predictions, the report estimates the annual damages to traditional markets alone will be $1.66 trillion by 2100.

An anonymous reader quotes a report from Ars Technica: Preparations for the first human spaceflight to the Moon in more than 50 years took a big step forward this weekend with the rollout of the Artemis II rocket to its launch pad. The rocket reached a top speed of just 1 mph on the four-mile, 12-hour journey from the Vehicle Assembly Building to Launch Complex 39B at NASA's Kennedy Space Center in Florida. At the end of its nearly 10-day tour through cislunar space, the Orion capsule on top of the rocket will exceed 25,000 mph as it plunges into the atmosphere to bring its four-person crew back to Earth. "This is the start of a very long journey," said NASA Administrator Jared Isaacman. "We ended our last human exploration of the moon on Apollo 17."

[...] "We really are ready to go," said Wiseman, the Artemis II commander, during Saturday's rollout to the launch pad. "We were in a sim [in Houston] for about 10 hours yesterday doing our final capstone entry and landing sim. We got in T-38s last night and we flew to the Cape to be here for this momentous occasion." The rollout began around sunrise Saturday, with NASA's Space Launch System rocket and Orion capsule riding a mobile launch platform and a diesel-powered crawler transporter along a throughway paved with crushed Alabama river rock. Employees, VIPs, and guests gathered along the crawlerway to watch the 11 million-pound stack inch toward the launch pad. The rollout concluded about an hour after sunset, when the crawler transporter's jacking system lowered the mobile launch platform onto pedestals at Pad 39B.

The rollout keeps the Artemis II mission on track for liftoff as soon as next month, when NASA has a handful of launch opportunities on February 6, 7, 8, 10, and 11. The big milestone leading up to launch day will be a practice countdown or Wet Dress Rehearsal (WDR), currently slated for around February 2, when NASA's launch team will pump more than 750,000 gallons of super-cold liquid hydrogen and liquid oxygen into the rocket. NASA had trouble keeping the cryogenic fluids at the proper temperature, then encountered hydrogen leaks when the launch team first tried to fill the rocket for the unpiloted Artemis I mission in 2022. Engineers implemented the same fixes on Artemis II that they used to finally get over the hump with propellant loading on Artemis I. [...] If the launch does not happen in February, NASA has a slate of backup launch dates in early March.

alternative_right shares a report from ScienceAlert: It all started in 1927, when physicist Thomas Parnell at the University of Queensland in Australia filled a closed funnel with the world's thickest known fluid: pitch, a derivative of tar that was once used to seal ships against the seas. Three years later, in 1930, Parnell cut the funnel's stem, like a ribbon at an event, heralding the start of the Pitch Drop Experiment. From then on, the black substance began to flow. At least, that is, in a manner of speaking. At room temperature pitch might look solid, but it is actually a fluid 100 billion times more viscous than water.

It took eight years for the first droplet to finally hit the beaker below. Then, they dripped at a cadence of once every eight years or so, slowing down only after air conditioning was installed in the building in the 1980s. Today, 96 years after the funnel was cut, only nine drops in total have seeped out. The last was in 2014. Scientists expect another will fall sometime in the 2020s, but they are still waiting. No one has ever actually seen a droplet fall directly, despite all the watchful eyes. The experiment is now live-streamed, but various glitches in the past meant that each fateful moment has slipped us by.

"Astronomers are preparing to capture a movie of a supermassive black hole in action for the first time," reports the Guardian: The Event Horizon Telescope (EHT) will track the colossal black hole at the heart of the Messier 87 galaxy throughout March and April with the aim of capturing footage of the swirling disc that traces out the edge of the event horizon, the point beyond which no light or matter can escape... The EHT is a global network of 12 radio telescopes spanning locations from Antarctica to Spain and Korea, which in 2019 unveiled the first image of a black hole's shadow. During March and April, as the Earth rotates, M87's central black hole will come into view for different telescopes, allowing a complete image to be captured every three days...

Measuring the black hole's spin speed matters because this could help discriminate between competing theories of how these objects reached such epic proportions. If black holes grow mostly through accretion — steadily snowballing material that strays nearby — they would be expected to end up spinning at incredibly high speeds. By contrast, if black holes expand mostly through merging with other black holes, each merger could slow things down. The observations could also help explain how black hole jets are formed, which are among the largest, most powerful structures produced by galaxies. Jets channel vast columns of gas out of galaxies, slowing down the formation of new stars and limiting galaxy growth. In turn this can create dense pockets of material that trigger bursts of star formation beyond the host galaxy...

While the movie campaign will take place in the spring, the sheer volume of data produced by the telescopes means the scientists will need to wait for Antarctic summer before the hard drives can be physically shipped to Germany and the US for processing. So it is likely to be a lengthy wait before the rest of the world gets a glimpse of the black hole in action.
In a correction, the Guardian apologizes for originally including an AI-generated illustration of black hole with a caption suggesting it was a photo from telescopes. They've since swapped in an actual picture of the Messier 87 galaxy black hole.

Last week a University of Arizona astronomy professor "watched anxiously...as an awe-inspiring SpaceX Falcon 9 rocket carried NASA's new exoplanet telescope, Pandora, into orbit."

In 2018 NASA had approached Daniel Apai to help build the telescope, which he says will "shatter a barrier — to understand and remove a source of noise in the data — that limits our ability to study small exoplanets in detail and search for life on them." Astronomers have a trick to study exoplanet atmospheres. By observing the planets as they orbit in front of their host stars, we can study starlight that filters through their atmospheres... But, starting from 2007, astronomers noted that starspots — cooler, active regions on the stars — may disturb the transit measurements. In 2018 and 2019, then-Ph.D. student Benjamin V. Rackham, astrophysicist Mark Giampapa and I published a series of studies showing how darker starspots and brighter, magnetically active stellar regions can seriously mislead exoplanets measurements. We dubbed this problem "the transit light source effect...."

In our papers — published three years before the 2021 launch of the James Webb Space Telescope - we predicted that the Webb cannot reach its full potential. We sounded the alarm bell... Pandora will do what Webb cannot: It will be able to patiently observe stars to understand how their complex atmospheres change.

By staring at a star for 24 hours with visible and infrared cameras, it will measure subtle changes in the star's brightness and colors. When active regions in the star rotate in and out of view, and starspots form, evolve and dissipate, Pandora will record them. While Webb very rarely returns to the same planet in the same instrument configuration and almost never monitors their host stars, Pandora will revisit its target stars 10 times over a year, spending over 200 hours on each of them.
It's the first space telescope "built specifically for detailed multi-color observations of starlight filtered through the atmospheres of exoplanets," reports the Arizona Daily Star, noting the University of Arizona will serve as mission control: [T]echnicians will operate Pandora in real time and monitor its telemetry and overall health under a contract with NASA... The spacecraft will undergo about a month of commissioning before beginning science operations, which are scheduled to last for a year...

Pandora was selected as part of NASA's Astrophysics Pioneers program, which was created in 2020 to foster compelling, relatively low-cost science missions using smaller, cheaper hardware and flight platforms with a price cap of no more than $20 million. By comparison, the Webb telescope — the largest and most powerful astronomical observatory ever sent into space — carries a pricetag of about $10 billion.
Pandora is a joint mission NASA and California's Lawrence Livermore National Laboratory.

An anonymous reader shared this report from CNN: Particles from Earth's atmosphere have been carried into space by solar wind and have been landing on the moon for billions of years, mixing into the lunar soil, according to a new study [published in the journal Nature Communications Earth & Environment last month]. The research sheds new light on a puzzle that has endured for over half a century since the Apollo missions brought back lunar samples with traces of substances such as water, carbon dioxide, helium and nitrogen embedded in the regolith — the moon's dusty surface layer.

Early studies theorized that the sun was the source of some of these substances. But in 2005 researchers at the University of Tokyo suggested that they could have also originated from the atmosphere of a young Earth before it developed a magnetic field about 3.7 billion years ago. The authors suspected that the magnetic field, once in place, would have stopped the stream by trapping the particles and making it difficult or impossible for them to escape into space. Now, the new research upends that assumption by suggesting that Earth's magnetic field might have helped, rather than blocked, the transfer of atmospheric particles to the moon — which continues to this day.

"This means that the Earth has been supplying volatile gases like oxygen and nitrogen to the lunar soil over all this time," said Eric Blackman, coauthor of the new study and a professor in the department of physics and astronomy at the University of Rochester in New York.
Earth's magnetic field "somewhat inflates the atmosphere of Earth" when it's hit by solar winds, according to study coauthor Eric Blackman, a physics/astronomy professor at New York's University of Rochester. He told CNN the moon passes through this region for a few days each month, with particles landing on the lunar surface and embedding in the soil (because the moon lacks an atmosphere that would block them).

This also means the moon's soil could actually contain a chemical record of Earth's ancient atmosphere, according to the study — "spanning billions of years..."

Long-time Slashdot reader schwit1 shared this report from Futurism: China has unveiled an extremely powerful "hypergravity machine" that can generate forces almost two thousand times stronger than Earth's regular gravity.

The futuristic-looking machine, called CHIEF1900, was constructed at China's Centrifugal Hypergravity and Interdisciplinary Experiment Facility (CHIEF) at Zheijang University in Eastern China, and allows researchers to study how extreme forces affect various materials, plants, cells, or other structures, as the South China Morning Post reports... [Once up and running, it will allow researchers to recreate "catastrophic events such as dam failures and earthquakes inside a laboratory, according to the university."] For instance, it can analyze the structural stability of an almost 1,000-feet-tall dam by spinning a ten-foot model at 100 Gs, meaning 100 times the Earth's regular gravity. It could also be used to study the resonance frequencies of high-speed rail tracks, or how pollutants seep into soil over thousands of years.

The machine officially dethroned its predecessor, CHIEF1300, which became the world's most powerful centrifuge a mere four months ago... It can generate 1,900 g-tonnes of force, or 1,900 times the Earth's gravity. To put that into perspective, a washing machine only reaches about two g-tonnes.

European satellite operator Eutelsat "plans to launch 440 Airbus-built LEO satellites in the coming years to replenish and expand its constellation," Reuters reported Friday. And last week America's Federal Communications Commission approved SpaceX's request to deploy another 7,500 Starlink satellites, while Starlink "projects it will eventually have a constellation of 34,000 satellites," writes Fast Company, and Amazon's Project Leo "plans to launch more than 3,200 satellites."

Meanwhile "Beijing and some Chinese companies are planning two separate mega-constellations, Guowang and G60 Starlink, totaling nearly 26,000 satellites," and this week the Chinese government "applied for launch permits for 200,000 satellites."

But a small Texas-based company called AST SpaceMobile "believes it can provide better service with fewer than 100 gigantic satellites in space." AST SpaceMobile has developed a direct-to-cell technology that utilizes large satellites called BlueBirds. These machines use thousands of antennas to deliver broadband coverage directly to standard mobile phones, says the company's president, Scott Wisniewski. "This approach is remarkably efficient: We can achieve global coverage with approximately 90 satellites, not thousands or even tens of thousands required by other systems," Wisniewski writes in an email...

The key is its satellites' size and sophistication. AST's first generation of commercial satellite, the BlueBird 1-5, unfolds into a massive 693-square-foot array in space. Today, the company has five operational BlueBird 1-5 satellites in orbit, but its ambitions are much bigger. On December 24, 2025, AST launched the first of its next-generation satellites from India — called Block 2 — and this one broke records. The BlueBird 6 has a surface of almost 2,400 square feet, making it the largest single satellite in low Earth orbit. The company plans to launch up to 60 more by the end of 2026. "This large surface area is essential for gathering faint signals from standard, unmodified mobile phones on the ground," Wisniewski explains. It is essentially a single, extremely powerful and sensitive cell tower in the sky, capable of serving a huge geographical area...

To be clear, AST SpaceMobile's approach is not without its own controversies. The sheer size of the company's satellites makes them incredibly bright in the night sky, a significant source of frustration for ground-based astronomers. McDowell confirms that when it launched in 2022, AST's prototype satellite, BlueWalker 3, became "one of the top 10 brightest objects in the night sky for a while."

"It's a serious issue, and we are working directly with the astronomy community to mitigate our impact," Wisniewski says. The company is exploring solutions like anti-reflective coatings and operational adjustments to minimize the time its satellites are at maximum brightness...
AST SpaceMobile has already proven its technology works, the article points out, with six working satellites now transmitting at typical 5G speeds directly to regular phones.

As 2026 begins, MIT Technology Review publishes "educated guesses" on emerging technologies that will define the future, advances "we think will drive progress or incite the most change — for better or worse — in the years ahead."

This year's list includes next-gen nuclear, gene-editing drugs (as well as the "resurrection" of ancient genes from extinct creatures), and three AI-related developments: AI companions, AI coding tools, and "mechanistic interpretability" for revealing LLM decision-making.

But also on the list is sodium-ion batteries, "a cheaper, safer alternative to lithium." Backed by major players and public investment, they're poised to power grids and affordable EVs worldwide. [Chinese battery giant CATL claims to have already started manufacturing sodium-ion batteries at scale, and BYD also plans a massive production facility for sodium-ion batteries.] The most significant impact of sodium-Âion technology may be not on our roads but on our power grids. Storing clean energy generated by solar and wind has long been a challenge. Sodium-ion batteries, with their low cost, enhanced thermal stability, and long cycle life, are an attractive alternative. Peak Energy, a startup in the US, is already deploying grid-scale sodium-ion energy storage. Sodium-ion cells' energy density is still lower than that of high-end lithium-ion ones, but it continues to improve each year — and it's already sufficient for small passenger cars and logistics vehicles.
And another "breakthrough technology" on their list is commercial space stations: Vast Space from California, plans to launch its Haven-1 space station in May 2026 on a SpaceX Falcon 9 rocket. If all goes to plan, it will initially support crews of four people staying aboard the bus-size habitat for 10 days. Paying customers will be able to experience life in microgravity and conduct research such as growing plants and testing drugs. On its heels will be Axiom Space's outpost, the Axiom Station, consisting of five modules (or rooms). It's designed to look like a boutique hotel and is expected to launch in 2028. Voyager Space aims to launch its version, called Starlab, the same year, and Blue Origin's Orbital Reef space station plans to follow in 2030.
Thanks to long-time Slashdot reader sandbagger for sharing the article.