geek

19 Jul 2026

Slashdot

James Webb Space Telescope Discovers How Black Holes Feed Themselves

"Thanks to the James Webb Space Telescope, astronomers have been given a glimpse of the mechanisms that supermassive black holes use to feed themselves," reports Space.com: The powerful cosmic titans get really puzzling when astronomers using the JWST spot them before the universe was even 1 billion years old. That's because the mechanisms by which black holes devour matter to grow and then merge to create even more massive black holes should take at least 1 billion years to achieve supermassive status. This is even more confusing because theories also say the most ravenously feeding black holes (and thus the fastest growing) should also push the matter they use for this growth away, in effect putting themselves on a diet. So, with all this in mind, how did supermassive black holes grow so rapidly in the early universe? One explanation suggests supermassive black holes push away gas, starving themselves as predicted, but also that this matter eventually cools and falls back to the black hole. That would allow for another period of feeding and thus growth. This explanation further suggests that as this gas cools down, it forms "streamers," or filaments, of gas just a few hundred light-years wide but which stretch thousands of light-years long. These would fall back to the center of the galaxy and form a swirling disk around its incumbent black hole, once again feeding it and triggering a new period of growth. This would then restart the jets from the black hole, which would again cut off the cosmic titan's food supply, allowing the whole process to begin once more. The process would in essence be a self-regulating cycle of feasting followed by fasting. However, the connection between these filaments and supermassive black holes has been elusive, meaning this mechanism has resisted confirmation. To solve the mystery of feasting black holes, the JWST turned its attention to a relatively close AGN situated at the heart of the central galaxy of the Centaurus Cluster, NGC 4696, located just 145 million light-years from Earth. The Hubble Space Telescope previously studied this galaxy, uncovering a strange, hook-shaped swirl of gas near the central supermassive black hole of NGC 4696. The JWST followed up this discovery by producing a detailed map of gas flowing at the heart of the galaxy. This revealed the hook-shaped feature is around 800 light-years wide and is composed of gas moving at incredible speeds of around 1.3 million miles per hour (600 kilometers per second). More excitingly, the swirl of gas appears to be connected to a vast filament of material falling in toward the central supermassive black hole. The team tested the JWST observations against a computer simulation, finding gas in the infalling filament scenario would indeed take a shape similar to that seen in NGC 4696. "JWST is now showing us the final link of this closed loop," team member Helen Russell of the School of Physics and Astronomy at the University of Nottingham in the U.K. said in the statement. "The vast filamentary network of gas flows ultimately funnels gas down to a disk that fuels the black hole." The team's research was published on Wednesday (July 16) in the Astrophysical Journal Letters. "We are finally seeing this self-sustaining cycle in action," team leader Julie Hlavacek-Larrondo of the Université de Montréal said in a statement.

Robot 'Decapitated' in World's First-Ever Humanoid UFC Fight

"A humanoid robot lost its head," reports Newsweek, "during the world's first free-combat tournament for full-sized humanoid robots." The Ultimate Robot Knock-out Legend competition began Thursday in Shenzhen, China, according to the article, with local robotics company EngineAI providing $40,000 of their "T800" robots (yes, named after The Terminator) to 32 participating teams from around the world: A video shared of the combat on YouTube by local news outlet Shenzhen Story, showed that even after one of the robots had its head practically knocked off its shoulders, it continued to fight, throwing punches at its opponent and kicking into the air... [White humanoid robot "White Eagle"] landed a high kick to the head of its black opponent, "Matador," which made the robot's head rock precariously in its socket before rolling completely out of place. The two continued to spar as Matador's head was swinging from its socket until eventually the robot fell, crushing its head underneath its body. Matador tried to scramble back to its feet, but its head flew off and the robot then collapsed back down. The White Eagle did a celebratory dance for the crowd as the fight concluded, and did a move that mimicked that of someone flexing their biceps. The White Eagle waited in the ring, fists still up, as Matador was carried away, occasionally doing a few more dance moves... Per a report by Global Times, the winning team will be awarded a gold championship belt worth $1.44 million (10 million yuan) by the event organizer. It's a strange fight. The robots sometimes seem unaware of where their opponent is, facing the wrong direction or throwing kicks and punches in the air. In the first round White Eagle just knocks over Matador, who then isn't able to stand back up. (And White Eagle again appears to do a victorious dance.) EngineAI's site says they aim to "promote the development of robot combat events toward greater professionalism, scale, and industrialization," while fostering innovation and global collaboration. Thanks to Slashdot reader pbahra for sharing the news.

Windows 10 Still Being Used, Often Unpatched and Insecure

Windows 10 still runs on 16.9% of the Windows devices monitored by asset-tracking service Lansweeper. That's more than one in six, The Register points out. A year ago, the operating system accounted for about half of the machines in its dataset, falling to the low-to-mid 40% range by the time Microsoft ended standard support. The decline continued after that, reaching 18.6% in June, but Lansweeper says migration has now slowed to a crawl... Small and medium-sized businesses are particularly exposed. Lansweeper reckons that 21.4% of machines at small and medium-sized business still run Windows 10, with cost usually being the constraint that keeps the legacy operating system running. The exposure is greater in some sectors, with 23% of healthcare and pharmaceutical systems sticking with Windows 10, while consumer and retail devices hover at 22.7%. According to Lansweeper's data, "a Windows 10 device carries an average of 1,903 active CVEs against 652 on Windows 11. That's a 2.9x gap." Esben Dochy, principal technical evangelist at the company, told The Register that "the Windows 10 average also includes devices that have Extended Security Update patches applied." [According to Lansweeper's figures, 14% of Windows 10 assets have applied Extended Security Update patches.] Part of the problem, according to Lansweeper, is "patch diffing," in which Windows 11 fixes can be reverse-engineered to find flaws in Windows 10. "The supported OS effectively hands attackers a map into the unsupported one," Lansweeper said... Looking at other market share measures such as Statcounter, there was little change in the share of Windows 10 and its successor over the last few months after a surge following the end of support. As Lansweeper noted: "The easy migrations are done. What's left is the hard core: devices that haven't moved because they can't or won't." Lansweeper's evangelist noted that in some cases there is no Windows 11-certified version yet for many medical devices and industrial or retail systems.

Ars Technica

As mosquito ranges expand, better monitoring is key to preventing disease

Monitoring is expensive and labor intensive. But it helps public health officials stop outbreaks.

19 Jul 2026 11:19am GMT

18 Jul 2026

Ars Technica

Will AI fix prior authorization—or make it worse?

The government is piloting a program that uses AI for insurance-coverage decisions.

18 Jul 2026 11:18am GMT

OSnews

Follow the money, especially in open source

Linus Torvalds, the creator of the Linux kernel and git, is employed by the Linux Foundation. This Foundation is a non-profit organisation dedicated to, as the name obviously implies, the promotion of Linux. The primary use of the funds it collects is to "help fund the infrastructure and fellows, including Linus Torvalds, who help develop the Linux kernel". The list of megacorporations donating most of the Foundation's funds is long. The Linux Foundation has twelve platinum members, which donate $500000 per year, followed by twelve gold members, who donate $100000 per year. Below these two primary tiers lie the silver peasants, who each donate $5000-$25000 per year, based on number of employees. Looking at the list of twelve platinum members, I noticed something interesting. Of the twelve platinum companies, six are "AI" companies or companies with massive investments in "AI": Google, Huawei, Facebook, Microsoft, Oracle, and IBM/Red Hat. Then there's Samsung Electronics, which is raking in stupendous amounts of money thanks to the "AI" bubble. Additionally, one of the gold members is Anthropic, another major "AI" company and makers of "Claude", the sloppiest of slopcoding tools. Many of these companies are unimaginably deep in the red when it comes to "AI", with very little indication they're ever going to be able to recover any of it. The situation is particularly bad for Oracle and IBM/Red Hat. Oracle's debt has been downgraded to one notch above junk status because of its "AI" spending, while IBM's shares experienced the largest crash in its 115 year history only a few days ago. By the way, in the first half of 2025, "AI-related capital expenditures contributed 1.1% to GDP growth, outpacing the U.S. consumer as an engine of expansion". Fun fact: since most of The Netherlands is effectively a swamp, most of the country's buildings are built on massive wooden or concrete poles (piles) hammered deep into the ground until they hit something more stable than mushy clay and wet sand. Otherwise, buildings in the country would simply sink into the ground. Every Dutch person who ever lived near a construction site has heard the rhythmic kathunk, kathunk, kathunk, all day long, as the massive piledriver machines spread their gospel. I guess something reminded me of this just now. Anyway, a large chunk of the funding the Linux Foundation, Linus Torvald's employer, receives is coming from increasingly desperate companies frantically trying to convince a populace deeply skeptical and often downright hostile towards "AI" to spend money on "AI" before the bubble bursts. For some reason, I thought this was interesting.

18 Jul 2026 5:27am GMT

17 Jul 2026

OSnews

The Zilog Z80 has turned 50

As of writing, the Zilog Z80 processor was officially launched 50 years ago, in July of 1976, less than 4 years after the last human had walked on the moon, decades closer to WWII than to the present day, roughly at a half way point between the Kennedy assassination and the fall of the Berlin wall, closer to the Korean war than to 9/11 which is itself an event that happened a quarter of a century ago. (Sorry…) The processor was extremely successful, being used in many 8 bit microcomputers, including early personal computers, home & hobby computers, as well as many embedded, industrial applications. Together with the 8080 & 8085 that it is binary compatible with, it contributed to creating a de facto hardware standard for 8 bit micros, allowing a de facto software standard of CP/M, and Microsoft BASIC. ↫ David Oberhollenzer The only device I actively remember using with a (sort-of) Z80 in it was the Game Boy, but most likely I've used a ton more over the decades that I don't remember or simply was never ware of. I did a little surface-level digging, and there we are: the TI-83, one of Texas Instruments' stupidly popular and eternally overpriced graphing calculators, release in 1996. I was part of the first wave of high school children in The Netherlands for whom a TI-83 graphing calculator was mandatory. During my high school years I used that thing extensively, for far more than just math class - I programmed applications for and on it, and played so many games on it. A friend and I even bought a communication cable so we could play competitive 1v1 Bomberman in class. Good times, made possible by the Z80.

17 Jul 2026 10:33pm GMT

Ars Technica

Google-backed satellites for wildfire detection launch as smoke chokes US, Canada

The FireSat program can spot wildfires that other satellites miss.

17 Jul 2026 7:50pm GMT

16 Jul 2026

OSnews

OnePlus exits EU, US markets

Rumours had been circulating for a while, but now it's official: OnePlus is effectively retreating from the European and US markets. Today, our hearts are undoubtedly heavy and mixed with emotion. As part of the proactive global strategy adjustment, OnePlus has decided to conclude new product rollouts in Europe and North America. ↫ OnePlus statement Once OnePlus' co-founder Carl Pei left the company (and founded Nothing), things have been feeling shaky for OnePlus, once the undisputed darling of the more technical part of the Android crowd. Their phones got more expensive, their minimalist, close-to-stock Android version got progressively worse, and they started lagging in updates, too. My OnePlus Watch 3, for instance, which was promised to get WearOS 6 at some point, but never got it - meanwhile, WearOS 7 has already been released. No, this news is not particularly surprising. Luckily, the company claims it will honour its warranty and update support obligations for existing products in Europe and the US, which is nice, but also something they're legally obligated to do (at least in the EU). A snag here is that the only update path the company offers is to ColorOS, from its parent company Oppo, which many more traditional Android and OnePlus users certainly won't be happy about. Something is better than nothing, I suppose, and I'll reserve judgment until I see what ColorOS 17 will be like on my other OnePlus product, a OnePlus Pad 3. It's just one more victim of western markets (illegally) consolidating on Apple and Samsung (while a few Pixels rummaging in the margins).

16 Jul 2026 10:31pm GMT