An anonymous reader writes: JPL in California announced this week a layoff of 325 workers, about 5% of its workforce, the third major layoff imposed this year.

The JPL press release indicates the layoffs are because of NASA budget cutbacks, but does not provide any specificity. The cause centers mostly around NASA's decision to pause its Mars Sample Return project, which JPL was leading. From this report:

This is the third round of layoffs at JPL this year, a reduction spurred primarily by major budgetary cuts to the Mars Sample Return mission, which is managed by JPL. NASA directed $310 million this year to the effort to bring Mars rocks back to Earth, a steep drop from the $822.3 million it spent on the program the previous year.

During a public joint hearing today titled "Unidentified Anomalous Phenomena: Exposing the Truth," four experts testified that the U.S. is running secret UAP programs, including crash retrieval and reverse-engineering programs for advanced nonhuman technology. Although the Pentagon maintains there's no evidence of alien spacecraft, witnesses like Luis Elizondo and Michael Gold argue that UAPs represent an intelligence enigma and call for open, stigma-free study to address potential security concerns and unknown scientific possibilities. NPR reports: Tim Gallaudet, retired rear admiral, U.S. Navy; CEO of Ocean STL Consulting, LLC
"Confirmation that UAPs are interacting with humanity came for me in January 2015," Gallaudet said in his written testimony (PDF). He describes being part of a pre-deployment naval exercise off the U.S. East Coast that culminated in the famous "Go Fast" video, in which a Navy F/A-18 jet's sensors recorded "an unidentified object exhibiting flight and structural characteristics unlike anything in our arsenal." He was among a group of commanders involved in the exercise who received an email containing the video, which was sent by the operations officer of Fleet Forces Command, Gallaudet said. "The very next day, the email disappeared from my account and those of the other recipients without explanation," he said.

Luis Elizondo, author and former Department of Defense official
Elizondo's written testimony (PDF) was brief and alleged that a secretive arms race is playing out on the global stage. "Let me be clear: UAP are real," he wrote. "Advanced technologies not made by our Government -- or any other government -- are monitoring sensitive military installations around the globe. Furthermore, the U.S. is in possession of UAP technologies, as are some of our adversaries." Elizondo is a former intelligence officer who later "managed a highly sensitive Special Access Program on behalf of the White House and the National Security Council," according to his official bio (PDF). "By 2012, [Elizondo] was the senior ranking person of the DOD's Advanced Aerospace Threat Identification Program, a secretive Pentagon unit that studied unidentified anomalous phenomena," his bio states, adding that he resigned in 2017.

Michael Gold, former NASA associate administrator of space policy and partnerships; member of NASA UAP Independent Study Team
Gold's written testimony (PDF) stressed the need for government agencies and academics to "overcome the pernicious stigma that continues to impede scientific dialogue and open discussions" about unexplained phenomena. "As the saying goes, the truth is out there," Gold said, "we just need to be bold enough and brave enough to face it."

Michael Shellenberger, founder of Public, a news outlet on the Substack platform
Shellenberger's testimony (PDF) ran to some 214 pages, including a lengthy timeline of UAP reports from 1947 to 2023. Shellenberger pressed the White House and Congress to act, calling for the adoption of UAP transparency legislation and cutting funds for any related programs that aren't disclosed to lawmakers. "UAP transparency is bi-partisan and critical to our national security," his written testimony stated. You can watch the proceeding here.

AmiMoJo writes: The climate-damaging vapors left behind by jet planes could be easily tackled, aviation experts say, with a new study suggesting they could be eliminated for a few pounds per flight. Jet condensation trails, or contrails, have spawned wild conspiracy theories alleging mind control and the spreading of disease, but scientists say the real problem is their warming effect.

"They create an artificial layer of clouds, which traps the heat from the Earth that's trying to escape to outer space," said Carlos Lopez de la Osa, from the Transport & Environment campaign group, which has carried out a new study on the solutions to contrails. "The scale of the warming that's associated with them is roughly having a similar impact to that of aviation carbon emissions."

Tweaking the flight paths of a handful of aircraft could reduce contrail warming by more than half by 2040, at a cost of less than $5.1 per flight. Geography and a flight's latitude have a strong influence on whether a contrail is warming. Time of day also influences the climate effects of contrails. Those formed by evening and night flights have the largest warming contribution. Seasonality is also important -- the most warming contrails tend to occur in winter. "Planes are already flying around thunderstorms and turbulence areas," Mr Lopez de la Osa said. "We will need to add one more constraint to flight planning, which is avoiding areas of contrail formation."

A new analysis of data from NASA's Voyager 2 mission reveals that the planet Uranus and its five largest moons might harbor subsurface oceans and potential conditions for life. The BBC reports: Much of what we know about them was gathered by Nasa's Voyager 2 spacecraft which visited nearly 40 years ago. But a new analysis shows that Voyager's visit coincided with a powerful solar storm, which led to a misleading idea of what the Uranian system is really like. [...] So, for 40 years we have had an incorrect view of what Uranus and its five largest moons are normally like, according to Dr William Dunn of University College London. "These results suggest that the Uranian system could be much more exciting than previously thought. There could be moons there that could have the conditions that are necessary for life, they might have oceans below the surface that could be teeming with fish!".

It has been nearly 40 years since Voyager 2 last flew past the icy world and its moons. Nasa has plans to launch a new mission, the Uranus Orbiter and Probe, to go back for a closer look in 10 years' time. According to Nasa's Dr Jamie Jasinski, whose idea it was to re-examine the Voyager 2 data, the mission will need to take his results into account when designing its instruments and planning the scientific survey. "Some of the instruments for the future spacecraft are very much being designed with ideas from what we learned from Voyager 2 when it flew past the system when it was experiencing an abnormal event. So we need to rethink how exactly we are going to design the instruments on the new mission so that we can best capture the science we need to make discoveries." Nasa's Uranus probe is expected to arrive by 2045, which is when scientists hope to find out whether these far-flung icy moons, once thought of as being dead worlds, might have the possibility of being home to life. The findings have been published in the journal Nature Astronomy.

Longtime Slashdot reader thephydes writes: The hearing will go ahead on November 13 at 11:30 ET (16:30 GMT). Apparently, it will "further pull back the curtain on secret UAP research programs conducted by the U.S. government, and undisclosed findings they have yielded," according to a House statement. It's driven by two republicans, Nancy Mace (R-S.C.) and Glenn Grothman (R-Wis.), who say: "Americans deserve to understand what the government has learned about UAP sightings, and the nature of any potential threats these phenomena pose. We can only ensure that understanding by providing consistent, systemic transparency. We look forward to hearing from expert witnesses on ways to shed more light and bring greater accountability to this issue." "Expert witnesses in the hearing will include Luis Elizondo, a decorated former counterintelligence officer who has claimed for years that the U.S. government is hiding knowledge of UAP, including materials recovered from crashed flying saucers," reports Space.com. "The House hearing will also include Tim Gallaudet, a retired U.S. Navy Rear Admiral who observed unidentified submersible objects, arguing that 'these underwater anomalies jeopardize US maritime security.'"

"Other speakers at the hearing include journalist Michael Shellenberger, who has also claimed the U.S. government is hiding UFO crash retrieval programs, and former NASA Associate Administrator of Space Policy and Partnerships Michael Gold, who is a member of NASA's independent UAP study team."

"Researchers at the University of Texas have unveiled a new thermal interface material that could revolutionize cooling, outperforming top liquid metal solutions by up to 72% in heat dissipation," writes Slashdot reader jjslash. "This breakthrough not only improves energy efficiency but also enables higher-density data center setups, cutting cooling costs and energy usage significantly." TechSpot reports: Thanks to a mechanochemically engineered combination of the liquid metal alloy Galinstan and ceramic aluminum nitride, this thermal interface material, or TIM, outperformed the best commercial liquid metal cooling products by a staggering 56-72% in lab tests. It allowed dissipation of up to 2,760 watts of heat from just a 16 square centimeter area. The material pulls this off by bridging the gap between the theoretical heat transfer limits of these materials and what's achieved in real products. Through mechanochemistry, the liquid metal and ceramic ingredients are mixed in an extremely controlled way, creating gradient interfaces that heat can flow across much more easily.

Beyond just being better at cooling, the researchers claim that the higher performance reduces the energy needed to run cooling pumps and fans by up to 65%. It also unlocks the ability to cram more heat-generating processors into the same space without overheating issues. [...] As for how you can get your hands on the material: it's yet to make it out of the labs. The UT team has so far only tested it successfully at small scales but is now working on producing larger batches to put through real-world trials with data center partners. The material has been detailed in a paper published in the journal Nature Nanotechnology.

SpaceX plans an ambitious in-orbit refueling test between two Starships in March 2025. "The orbital demonstration is a major step for Starship, and a crucial part of SpaceX's capability of delivering NASA's Artemis mission to the Moon," reports Gizmodo. The plans were unveiled during Spaceflight Now's recent interview (source: YouTube) with Kent Chojnacki, the deputy manager for NASA's Human Landing System program. Gizmodo reports: SpaceX is under a $53.2 million contract with NASA, signed in 2020, to use Starship tankers for in-orbit propellant transfer. During its third test flight, SpaceX transferred around 10 metric tons of liquid oxygen from Starship's header tank to its main tank while it was in space. The upcoming demonstration, however, requires a lot more of the launch vehicle. Two Starships will launch to low Earth orbit around three to four weeks apart, the spacecraft will meet and dock in orbit, and one will transfer propellant to another. After the demonstration, the two Starships will undock from one another and deorbit.

"Once you've done that, you've really cracked open the opportunity to move massive amounts of payload and cargo outside of the Earth's sphere," Chojnacki said during the interview. The in-flight propellant transfer tests are set to conclude in the summer. With in-flight refueling, NASA is aiming to develop technologies to "enable long-term cryogenic fluid management, which is essential for establishing a sustainable presence on the Moon and enabling crewed missions to Mars," the space agency stated when the contract was signed.

SpaceX is developing a version of Starship to land humans on the Moon in September 2026 as part of NASA's Artemis 3 mission. To prepare for the Moon mission, SpaceX is expected to launch between eight and 16 propellant tanker Starships into low Earth orbit in rapid succession. Each of the tankers will carry around 100 to 150 tons of liquid oxygen and liquid methane and will dock with a larger fuel depot. The orbiting depot will then connect with the Human Landing System Starship, filling its massive 1,200-ton fuel tanks. Once refueled, the Starship lander will continue its journey toward the Moon.

The UK's oldest satellite, Skynet-1A, mysteriously shifted from its original orbit above East Africa to a new position over the Americas, likely due to a mid-1970s command whose origins remain unknown. "The question is who that was and with what authority and purpose?" asks the BBC. From the report: "It's still relevant because whoever did move Skynet-1A did us few favours," says space consultant Dr Stuart Eves. "It's now in what we call a 'gravity well' at 105 degrees West longitude, wandering backwards and forwards like a marble at the bottom of a bowl. And unfortunately this brings it close to other satellite traffic on a regular basis. "Because it's dead, the risk is it might bump into something, and because it's 'our' satellite we're still responsible for it," he explains.

Dr Eves has looked through old satellite catalogues, the National Archives and spoken to satellite experts worldwide, but he can find no clues to the end-of-life behaviour of Britain's oldest spacecraft. It might be tempting to reach for a conspiracy theory or two, not least because it's hard to hear the name "Skynet" without thinking of the malevolent, self-aware artificial intelligence (AI) system in The Terminator movie franchise. But there's no connection other than the name and, in any case, real life is always more prosaic.

An anonymous reader quotes a report from TechCrunch: A trend has emerged among a small group of climate tech founders who start with their eyes fixed on space and soon realize their technology would do a lot more good here on Earth. Halen Mattison and Luke Neise fit the bill. Mattison spent time at SpaceX, while Neise worked at Vanderbilt Aerospace Design Laboratory and Varda Space Industries. The pair originally wanted to sell reactors to SpaceX that could turn carbon dioxide into methane for use on Mars. Today, they're building them to replace natural gas that's pumped from underground. Their company, General Galactic, which emerged from stealth in April, has built a pilot system that can produce 2,000 liters of methane per day. Neise, General Galactic's CTO, told TechCrunch that he expects that figure to rise as the company replaces off-the-shelf components with versions designed in-house.

"We think that's a big missing piece in the energy mix right now," said Mattison, the startup's CEO. "Being able to own our supply chains, to be able to fully control all of the parameters, to challenge the requirements between components, all of that unlocks some real elegance in the engineering solution." At commercial scale, the company's reactors will be assembled using mass production techniques. It's a contrast to how most petrochemical and energy facilities are built today. General Galactic is focused on producing methane. However, Mattison said the company isn't necessarily looking to displace the fuel from heating and energy. "Those are generally going toward electrification," he said. Instead, it intends to sell its methane to companies that use it as an ingredient or to power a process, like in chemical or plastic manufacturing. The company isn't ruling out transportation entirely either. Mattison hinted that General Galactic is working on other hydrocarbons that could be used for transportation, like jet fuel. "Stay tuned," he said. General Galactic plans to deploy its first modules next year. The startup "hopes its modules will be able to plug into existing infrastructure, speeding its adoption relative to other fuels like hydrogen," notes TechCrunch.

Android Authority's Rita El Khoury argues that the decline in punctuation use and capitalization in social media writing, especially among younger generations, can largely be attributed to the iPhone keyboard. "By hiding the comma and period behind a symbol switch, the iPhone keyboard encourages the biggest grammar fiends to be lazy and skip punctuation," writes El Khoury. She continues: Pundits will say that it's just an extra tap to add a period (double-tap the space bar) or a comma (switch to the characters layout and tap comma), but it's one extra tap too many. When you're firing off replies and messages at a rapid rate, the jarring pause while the keyboard switches to symbols and then switches back to letters is just too annoying, especially if you're doing it multiple times in one message. I hate pausing mid-sentence so much that I will sacrifice a comma at the altar of speed. [...]

The real problem, at the end of the day, is that iPhones -- not Android phones -- are popular among Gen Z buyers, especially in the US -- a market with a huge online presence and influence. Add that most smartphone users tend to stick to default apps on their phones, so most of them end up with the default iPhone keyboard instead of looking at better (albeit often even slower) alternatives. And it's that same keyboard that's encouraging them to be lazy instead of making it easier to add punctuation.

So yes, I blame the iPhone for killing the period and slaughtering the comma, and I think both of those are great offenders in the death of the capital letter. But trends are cyclical, and if the cassette player can make a comeback, so can the comma. Who knows, maybe in a year or two, writing like a five-year-old will be passe, too, and it'll be trendy to use proper grammar again.

"Now and Then" by the Beatles has been nominated for Record of the Year and Best Rock Performance at the 2025 Grammy Awards -- marking the first time a song created with the assistance of AI has earned a Grammy nomination. From a report: When "Now and Then" first came out in late 2023, the disclosure that it was finalized utilizing AI caused an uproar. At the time, many fans assumed that the remaining Fab Four members -- Paul McCartney and Ringo Starr -- must have used generative AI to deepfake the late John Lennon. That was not actually the case. Instead, the Beatles used a form of AI known as "stem separation" to help them clean up a 60-year-old, low-fidelity demo recorded by Lennon during his lifetime and to make it useable in a finished master recording.

With stem separation, the Beatles could isolate Lennon's vocal and get rid of excess noise. Proponents of this form of technology say it has major benefits for remastering and cleaning up older catalogs. Recently, AudioShake, a leading company in this space, struck a partnership with Disney Music Group to help the media giant clean up its older catalog to "unlock new listening and fan engagement experiences" like lyric videos, film/TV licensing opportunities, re-mastering and more.

NASA hopes to stimulate in-space manufacturing through a multi-year "laser beam welding collaboration" with Ohio State University. The project "seeks to understand the physical processes of welding on the lunar surface," according to NASA.gov, "such as investigating the effects of laser beam welding in a combined vacuum and reduced gravity environment." The goal is to increase the capabilities of manufacturing in space to potentially assemble large structures or make repairs on the Moon, which will inform humanity's next giant leap of sending astronauts to Mars and beyond. "For a long time, we've used fasteners, rivets, or other mechanical means to keep structures that we assemble together in space," said Andrew O'Connor, a Marshall materials scientist who is helping coordinate the collaborative effort and is NASA's technical lead for the project. "But we're starting to realize that if we really want strong joints and if we want structures to stay together when assembled on the lunar surface, we may need in-space welding."

The ability to weld structures in space would also eliminate the need to transport rivets and other materials, reducing payloads for space travel. That means learning how welds will perform in space. To turn the effort into reality, researchers are gathering data on welding under simulated space conditions, such as temperature and heat transfer in a vacuum; the size and shape of the molten area under a laser beam; how the weld cross-section looks after it solidifies; and how mechanical properties change for welds performed in environmental conditions mimicking the lunar surface. "Once you leave Earth, it becomes more difficult to test how the weld performs, so we are leveraging both experiments and computer modeling to predict welding in space while we're still on the ground," said O'Connor.

In August 2024, a joint team from Ohio State's Welding Engineering and Multidisciplinary Capstone Programs and Marshall's Materials & Processes Laboratory performed high-powered fiber laser beam welding aboard a commercial aircraft that simulated reduced gravity. The aircraft performed parabolic flight maneuvers that began in level flight, pulled up to add 8,000 feet in altitude, and pushed over at the top of a parabolic arc, resulting in approximately 20 seconds of reduced gravity to the passengers and experiments. While floating in this weightless environment, team members performed laser welding experiments in a simulated environment similar to that of both low Earth orbit and lunar gravity. Analysis of data collected by a network of sensors during the tests will help researchers understand the effects of space environments on the welding process and welded material.
They performed that laser-beam welding in a vacuum chamber during the parabolic flight (on a Boeing 727), according to the article — and successfully completed 69 out of 70 welds in microgravity and lunar gravity conditions. "The last time NASA performed welding in space was during the Skylab mission in 1973...

"Practical welding and joining methods and allied processes, including additive manufacturing, will be required to develop the in-space economy."

Sodium-ion batteries are cheaper than lithium-ion batteries — and they're also more environmentally friendly. And "In the past few years, sodium-ion battery production has increased in the United States," reports the Washington Post, with a new factory planned to manufacture them "in the same way as lithium-ion batteries, just with different ingredients. Instead of using expensive materials like lithium, nickel and cobalt, these will be made of sodium, iron and manganese..." Last month, sodium-ion battery manufacturer Natron Energy announced it would open a "gigafactory" in North Carolina that would produce 24 gigawatt hours of batteries annually, enough energy to charge 24,000 electric vehicles. But sodium-ion batteries are still early in their development compared with lithium-ion, and they have yet to hit the market on a massive scale.

"It's unlikely sodium-ion could displace lithium-ion anytime soon," said Keith Beers, polymer science and materials chemistry principal engineer at technical consultancy firm Exponent... The biggest limitation of sodium-ion batteries is their weight. Sodium weighs nearly three times as much as lithium, and it cannot store the same amount of energy. As a result, sodium-ion batteries tend to be larger. Jens Peters, an economics professor at the University of Alcalá in Madrid, said the energy density could be improved over time in sodium-ion batteries. But, he added, "what we found out so far in our assessments is that it is not a game changer."

Sodium-ion batteries are touted to be the environmentally friendly alternative to their lithium-ion counterparts, thanks to their raw materials. Sodium, iron and manganese are all abundant elements on the planet, so they require less energy to extract and cost less... Sodium-ion batteries also last longer than lithium-ion ones because they can withstand more charge cycles, said Wendell Brooks, co-CEO of Natron Energy. "Our product can have millions of cycles," said Brooks, "where lithium-ion would have three to five thousand cycles and wear out a lot faster...." Sodium-ion batteries aren't the best fit for smartphones or electric vehicles, which need to store lots of energy. However, one advantage is their low cost. And they could be a good candidate in situations where the size of the battery isn't a concern, like energy storage. "When something is built out to support grid or backup storage, it doesn't need to be very dense. It's staying put," Beers said.
Natron will invest nearly $1.4 billion in the factory "to meet the rapidly expanding demand for critical power, industrial and grid energy storage solutions," according to their announcement.

"Natron's high-performance sodium-ion batteries outperform lithium-ion batteries in power density and recharging speed, do not require lithium, cobalt, copper, or nickel, and are non-flammable... Natron's batteries are the only UL-listed sodium-ion batteries on the market today, and will be delivered to a wide range of customer end markets in the industrial power space, including data centers, mobility, EV fast charging, microgrids, and telecom, among others."

This week Discover magazine looks at evidence — both old and new — for a ninth planet in our solar system: "Orbits of the most distant small bodies — comets or asteroids — seem to be clustered on one half or one side of the solar system," says Amir Siraj [an astrophysicist with Princeton University]. "That's very weird and something that can't be explained by our current understanding of the solar system." A 2014 study in Nature first noted these orbits. A 2021 study in The Astronomical Journal examined the clustering in the orbit and concluded that "Planet Nine" was likely closer and brighter than expected.

Astrophysicists don't agree whether the clustering in the orbit is a real effect. Some have argued it is biased because the view that scientists currently have is limited, Siraj says. "This debate for the last decade has a lot of scientists confused, including myself. I decided to look at the problem from scratch," he says.

In a 2024 paper, Siraj and his co-authors ran simulations of the solar system, including an extra planet beyond Neptune. "We did it 300 times, about 2.5 times more than what was done previously," Siraj says. "In each simulation, you try different parameters for the extra planet. A different mass, a different tilt, a different shape of the orbit. You run these for millions of years, and then you compare the distribution to what we see in our solar system...." They found that the perimeters for this possible planet were different than what has been previously discussed in the scientific literature, and they supported the possibility of an unseen planet beyond Neptune.

Scientists hope a new telescope will have the potential to see deeper into the solar system. In 2025, the Vera C. Rubin Observatory on Cerro Pachón — a mountain in Chile, is expected to go online. The observatory boasts that in the time it takes a person to open up their phone and pose for a selfie, their new telescope will be able to snap an image of 100,000 galaxies, many of which have never been seen by scientists. The telescope will have the largest digital camera ever built, the LSST. Siraj says he expects it will take "the deepest, all-sky survey that humanity has ever conducted." So, what might the Rubin Observatory find past Neptune? Based on the current literature, Siraj sees a few possibilities. One is that the Rubin Observatory, with its increased capabilities, might be able to see a planet beyond Neptune... "Next year is going to be an enormous year for solar system science," he says.
NASA points out that the Hawaii-based Keck and Subaru telescopes are also searching for Planet X, while "a NASA-funded citizen science project called Backyard Worlds: Planet 9, encourages the public to help search using images captured by NASA's Wide-field Infrared Survey Explorer (WISE) mission.

And starting next year the Rubin observatory will also "search for more Kuiper Belt objects. If the orbits of these objects are systematically aligned with each other, it may give more evidence for the existence of Planet X (Planet Nine), or at least help astronomers know where to search for it.

"Another possibility is that Planet X (Planet Nine) does not exist at all. Some researchers suggest the unusual orbit of those Kuiper Belt objects can be explained by their random distribution."

Thanks to long-time Slashdot reader Tablizer for sharing the news.

Tuesday at California's Vandenberg Space Force base, the U.S. launched a Minuteman III missile, "in an important test of the weapon's ability to strike its targets with multiple warheads," according to Air and Space Forces magazine: The Minuteman III missiles that form a critical leg of the U.S. nuclear triad each carry one nuclear-armed reentry vehicle. But the missile that was tested carried three test warheads... The intercontinental ballastic missile (ICBM) test was controlled by an airborne command post in a test of the U.S. ability to launch its nuclear deterrent from a survivable platform.... Gen. Thomas A. Bussiere, the commander of Air Force Global Strike Command, said in a release: "An airborne launch validates the survivability of our ICBMs, which serve as the strategic backstop of our nation's defense and defense of allies and partners...."

The three test reentry vehicles — one high-fidelity Joint Test Assembly, which carries non-nuclear explosives, and two telemetry Joint Test Assembly objects — struck the Reagan Test Site near the Kwajalein Atoll in the Marshall Islands roughly 30 minutes later after launch, a flight of about 4,200 miles. "They make up essentially a mock warhead," Col. Dustin Harmon, the commander of the 377th Test and Evaluation Group, the nation's operational ICBM test unit, said in an interview with Air & Space Forces Magazine. "There's two different types. One is telemetered, so it's got a radio transmitter in it, it's got antennas, gyroscopes, accelerometers — all the things that can sense motion and movement. And we fly those or we can put one in there that's called a high-fidelity. That is assembled much like an actual weapon would be, except we use surrogate materials, and so we want it to fly similarly to an actual weapon. ... It has the explosives in it that a normal warhead would to drive a detonation, but there's nothing to drive...."

The U.S. government formally notified Russia in advance of the launch in accordance with a 1988 bilateral agreement. More than 145 countries were also provided with advance notice of the launch under the Hague Code of Conduct — an international understanding on launch notifications. The U.S. also provided advance notice to China, a DOD spokesperson told Air & Space Forces Magazine. China notified the U.S. of an ICBM launch over the Pacific Ocean in September. There is no formal agreement between Washington and Beijing that requires such notifications, but each side provided them to avoid miscalculations.
Test launches happen three times a year, according to the article, yielding "several gigabytes of data" about reentry vehicles, subsystems, and payloads. "There are 400 Minuteman III missiles currently in service across Colorado, Montana, Nebraska, North Dakota, and Wyoming."

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

After missing a chance to capitalize on the AI boom, "Samsung's profit has plunged," reports CNBC, and "around $126 billion has been wiped off its market value, according to data from S&P Capital IQ."

It's gotten so bad that "an executive issued a rare public apology about the company's recent financial performance." [A]s AI applications such as OpenAI's ChatGPT rose in popularity, the underlying infrastructure required to train the huge models they rely on became a bigger focus. Nvidia has emerged as the top player in this space with its graphics processing units (GPUs) that have become the gold standard used by tech giants for AI training. A crucial part of that semiconductor architecture is high-bandwidth memory, or HBM. This next generation of memory involves stacking multiple dynamic random access memory (DRAM) chips, but it had a small market before the AI boom. That's where Samsung got caught out and failed to invest...

SK Hynix saw this opportunity. The company aggressively launched HBM chips which were approved for use in Nvidia architecture and, in the process, the South Korean firm established a close relationship with the U.S. giant. Nvidia's CEO even asked the company to speed up supply of its next generation chip, underscoring the importance of HBM to its products. SK Hynix posted record quarterly operating profit in the September quarter...

Analysts said that Samsung is lagging behind competitors for a number of reasons, including underinvestment in HBM and the fact that it is not a first-mover. "It is fair to say that Samsung has not been able to close the gap with SK Hynix on the HBM development roadmap," said Kazunori Ito [director of equity research at Morningstar]. Samsung's ability to make a comeback in the short term appears to be closely linked to Nvidia. A company must pass a strict qualification process before Nvidia approves it as a HBM supplier — and Samsung has not yet completed this verification. But a green light from Nvidia could open the door for Samsung to return to growth and compete more effectively with SK Hynix, according to analysts.

The James Webb Space Telescope has made groundbreaking discoveries, detecting the most distant galaxy yet and capturing an image of the closest directly-imaged exoplanet. "Judging by astronomers' interest in using Webb, there are many more to come," writes Ars Technica's Stephen Clark. With immense demand for observation time, Webb is set to explore a vast array of cosmic targets -- from early galaxies to exoplanet atmospheres -- offering insights that extend far beyond Hubble's reach. From the report: The Space Telescope Science Institute, which operates Webb on behalf of NASA and its international partners, said last week that it received 2,377 unique proposals from science teams seeking observing time on the observatory. The institute released a call for proposals earlier this year for the so-called "Cycle 4" series of observations with Webb. This volume of proposals represents around 78,000 hours of observing time with Webb, nine times more than the telescope's available capacity for scientific observations in this cycle. The previous observing cycle had a similar "oversubscription rate" but had less overall observing time available to the science community.

More than 600 scientists will review the proposals and select the most promising ones for time on Webb. The largest share of proposals would involve observing "high-redshift" galaxies among the first generation of galaxies that formed after the Big Bang. Galaxies this old and distant have their light stretched to longer wavelengths due to the expansion of the Universe. Research involving exoplanet atmospheres and stars and stellar populations were the second- and third-most popular science categories in this cycle. [...] It seems astronomers have no shortage of ideas about where to look. Maybe one day, new super heavy-lift rockets or advancements in in-space assembly will make it possible to deploy space telescopes even more sensitive than Webb. Until then, we can be thankful that Webb is performing well and has a good shot of far outliving its original five-year design life. Let's continue enjoying the show.

Ars Technica's Eric Berger reports: When Chinese space officials unveiled the design for the country's first super heavy lift rocket nearly a decade ago, it looked like a fairly conventional booster. The rocket was fully expendable, with three stages and solid motors strapped onto its sides. Since then, the Asian country has been revising the design of this rocket, named Long March 9, in response to the development of reusable rockets by SpaceX. As of two years ago, China had recalibrated the design to have a reusable first stage. Now, based on information released at a major airshow in Zhuhai, China, the design has morphed again. And this time, the plan for the Long March 9 rocket looks almost exactly like a clone of SpaceX's Starship rocket.

Based on its latest specifications, the Long March 9 rocket will have a fully reusable first stage powered by 30 YF-215 engines, which are full-flow staged combustion engines fueled by methane and liquid oxygen, each with a thrust of approximately 200 tons. By way of comparison, Starship's first stage is powered by 33 Raptor engines, also fueled with methane and liquid oxygen, each with a thrust of about 280 tons. The new specifications also include a fully reusable configuration of the rocket, with an upper stage that looks eerily similar to Starship's second stage, complete with flaps in a similar location. According to a presentation at the airshow, China intends to fly this vehicle for the first time in 2033, nearly a decade from now. Last week, Chinese space startup Cosmoleap announced plans to develop a fully reusable "Leap" rocket with the next few years. "An animated video that accompanied the funding announcement indicated that the company seeks to emulate the tower catch-with-chopsticks methodology that SpaceX successfully employed during Starship's fifth flight test last month," reports Ars.

SpaceX has launched the world's first wood-paneled satellite into space "to test the suitability of timber as a renewable building material in future exploration of destinations like the Moon and Mars," reports the BBC. From the report: Made by researchers in Japan, the tiny satellite weighing just 900g is heading for the International Space Station on a SpaceX mission. It will then be released into orbit above the Earth. Named LignoSat, after the Latin word for wood, its panels have been built from a type of magnolia tree, using a traditional technique without screws or glue. Researchers at Kyoto University who developed it hope it may be possible in the future to replace some metals used in space exploration with wood.

"Wood is more durable in space than on Earth because there's no water or oxygen that would rot or inflame it," Kyoto University forest science professor Koji Murata told Reuters news agency. "Early 1900s airplanes were made of wood," Prof Murata said. "A wooden satellite should be feasible, too." If trees could one day be planted on the Moon or Mars, wood might also provide material for colonies in space in the future, the researchers hope. Along with its wood panels, LignoSat also incorporates traditional aluminium structures and electronic components. It has sensors on board to monitor how its wood reacts to the extreme environment of space during the six months it will orbit the Earth. You can watch the launch on YouTube.

AMD has surpassed Intel in datacenter processor sales for the first time in history, marking a dramatic shift in the server chip market. AMD's datacenter revenue hit $3.549 billion in Q3, edging out Intel's $3.3 billion, according to SemiAnalysis.

The milestone ends Intel's decades-long dominance in server processors, where it held over 90% market share until recent years. AMD's EPYC processors now power many high-end servers, commanding premium prices despite selling at lower costs than comparable Intel chips.