404 Media

2025-11-26 17:50:20

A Lone Astronomer Has Reported a Dark Matter ‘Annihilation’ Breakthrough

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An astronomer has reported a possible new signature of dark matter, a mysterious substance that makes up most of the universe, according to a study published on Tuesday in the Journal of Cosmology and Astroparticle Physics.

Dark matter accounts for 85 percent of all matter in the universe, but its existence has so far been inferred only from its indirect effects on the familiar “baryonic” matter that makes up stars, planets, and life.

Tomonori Totani, a professor of astronomy at the University of Tokyo and the author of the study, believes he has spotted novel indirect traces of dark matter particles in the “halo” surrounding the center of our galaxy using new observations from NASA’s Fermi Gamma-ray Space Telescope. When these speculative particles collide—a process called dark matter annihilation—the crash is predicted to emit bright gamma rays, which is the light that Totani thinks he has identified.

“The discovery was made possible by focusing on the halo region (excluding the galactic center), which had received little attention, and by utilizing data accumulated over 15 years from the Fermi satellite,” Totani told 404 Media in an email. “After carefully removing all components other than dark matter, a signal resembling dark matter appeared.”

“It was like playing the lottery, and at first I was skeptical,” he added. “But after checking meticulously and thinking it seemed correct, I got goosebumps!”

If the detection is corroborated by follow-up studies, it could confirm a leading hypothesis that dark matter is made of a hypothetical class of weakly interacting massive particles, or “WIMPs”—potentially exposing the identity of this mysterious substance for the first time. But that potential breakthrough is still a ways off, according to other researchers in the field.

“Any new structure in the gamma-ray sky is interesting, but the dark matter interpretation here strikes me as quite preliminary,” said Danielle Norcini, an experimental particle physicist and

assistant professor at Johns Hopkins University, in an email to 404 Media.
Gamma-ray intensity map excluding components other than the halo, spanning approximately 100 degrees in the direction of the Galactic center. The horizontal gray bar in the central region corresponds to the Galactic plane area, which was excluded from the analysis to avoid strong astrophysical radiation. Image: Tomonori Totani, The University of Tokyo
Dark matter has flummoxed scientists for almost a century. In the 1930s, astronomer Fritz Zwicky observed that the motions of galaxies hinted that they are much more massive than expected based solely on visible baryonic matter. Since then, astronomers have confirmed that dark matter, which accumulates into dense halos at the centers of galaxies, acts like a gravitational glue that holds structures together. Dark matter is also the basis of a vast cosmic web of gaseous threads that links galaxy clusters across billions of light years.

But while dark matter is ubiquitous, it does not interact with the electromagnetic force, which means it does not absorb, reflect, or emit light. This property makes it difficult to spot with traditional astronomy, a challenge that has inspired the development of novel instruments designed to directly detect dark matter such as the subterranean LUX-ZEPLIN in South Dakota and the forthcoming DAMIC-M in France.

For years, scientists have been probing possible emission from dark matter annihilation at the center of the Milky Way, which is surrounded by a halo of densely-clustered dark matter. Those previous studies focus on an excess emission pattern of about 2 gigaelectronvolts (GeV). Tontani’s study spotlights a new and different pattern with extremely energetic gamma rays at 20 GeV.

“A part of the Fermi data showed a peculiar excess that our model couldn't explain, leading me to suspect it might be due to radiation originating from dark matter,” he said. “The most difficult part is removing gamma-ray emissions of origins other than dark matter, such as those from cosmic rays and celestial objects.”

This tentative report may finally fill in a major missing piece of our understanding of the universe by exposing the true nature of dark matter and confirming the existence of WIMPs. But given that similar claims have been made in the past, more research is needed to assess the significance of the results.

“For any potential indirect signal, the key next steps are independent checks: analyses using different background models, different assumptions about the Milky Way halo, and ideally complementary data sets,” Norcini said.

“Gamma-ray structures in the halo can have many astrophysical origins, so ruling those out requires careful modeling and cross-comparison,” she continued. “At this point the result seems too new for that scrutiny to have played out, and it will take multiple groups looking at the same data before a dark matter interpretation could be considered robust.”

Though Totani is confident in his interpretation of his discovery, he also looks forward to the input of other dark matter researchers around the world.

“First, I would like other researchers to independently verify my analysis,” he said. “Next, for everyone to be convinced that this is truly dark matter, the decisive factor will be the detection of gamma rays with the same spectrum from other regions, such as dwarf galaxies. The accumulation of further data from the Fermi satellite and large ground-based gamma-ray telescopes, such as the Cherenkov Telescope Array Observatory (CTAO) will be crucial.”

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2025-11-26 15:47:11

'Slop Evader' Lets You Surf the Web Like It’s 2022

It’s hard to believe it’s only been a few years since generative AI tools started flooding the internet with low quality content-slop. Just over a year ago, you’d have to peruse certain corners of Facebook or spend time wading through the cultural cesspool of Elon Musk’s X to find people posting bizarre and repulsive synthetic media. Now, AI slop feels inescapable — whether you’re watching TV, reading the news, or trying to find a new apartment.

That is, unless you’re using Slop Evader, a new browser tool that filters your web searches to only include results from before November 30, 2022 — the day that ChatGPT was released to the public.

The tool is available for Firefox and Chrome, and has one simple function: Showing you the web as it was before the deluge of AI-generated garbage. It uses Google search functions to index popular websites and filter results based on publication date, a scorched earth approach that virtually guarantees your searches will be slop-free.

Slop Evader was created by artist and researcher Tega Brain, who says she was motivated by the growing dismay over the tech industry’s unrelenting, aggressive rollout of so-called “generative AI”—despite widespread criticism and the wider public’s distaste for it.

Slop Evader in action. Via Tega Brain

“This sowing of mistrust in our relationship with media is a huge thing, a huge effect of this synthetic media moment we’re in,” Brain told 404 Media, describing how tools like Sora 2 have short-circuited our ability to determine reality within a sea of artificial online junk. “I’ve been thinking about ways to refuse it, and the simplest, dumbest way to do that is to only search before 2022.”

One under-discussed impact of AI slop and synthetic media, says Brain, is how it increases our “cognitive load” when viewing anything online. When we can no longer immediately assume any of the media we encounter was made by a human, the act of using social media or browsing the web is transformed into a never-ending procession of existential double-takes.

This cognitive dissonance extends to everyday tasks that require us to use the internet—which is practically everything nowadays. Looking for a house or apartment? Companies are using genAI tools to generate pictures of houses and rental properties, as well as the ads themselves. Trying to sell your old junk on Facebook Marketplace? Meta’s embrace of generative AI means you may have to compete with bots, fake photos, and AI-generated listings. And when we shop for beauty products or view ads, synthetic media tools are taking our filtered and impossibly-idealized beauty standards to absurd and disturbing new places.

In all of these cases, generative AI tools further thumb the scales of power—saving companies money while placing a higher cognitive burden on regular people to determine what’s real and what’s not.

“I open up Pinterest and suddenly notice that half of my feed are these incredibly idealized faces of women that are clearly not real people,” said Brain. “It’s shoved into your face and into your feed, whether you searched for it or not.”

Currently, Slop Evader can be used to search pre-GPT archives of seven different sites where slop has become commonplace, including YouTube, Reddit, Stack Exchange, and the parenting site MumsNet. The obvious downside to this, from a user perspective, is that you won’t be able to find anything time-sensitive or current—including this very website, which did not exist in 2022. The experience is simultaneously refreshing and harrowing, allowing you to browse freely without having to constantly question reality, but always knowing that this freedom will be forever locked in time—nostalgia for a human-centric world wide web that no longer exists.

Of course, the tool’s limitations are part of its provocation. Brain says she has plans to add support for more sites, and release a new version that uses DuckDuckGo’s search indexing instead of Google’s. But the real goal, she says, is prompting people to question how they can collectively refuse the dystopian, inhuman version of the internet that Silicon Valley’s AI-pushers have forced on us.

“I don’t think browser add-ons are gonna save us,” said Brain. “For me, the purpose of doing this work is mostly to act as a provocation and give people examples of how you can refuse this stuff, to furnish one’s imaginary for what a politics of refusal could look like.”

With enough cultural pushback, Brain suggests, we could start to see alternative search engines like DuckDuckGo adding options to filter out search results suspected of having synthetic content (DuckDuckGo added the ability to filter out AI images in search earlier this year). There’s also been a growing movementpushing back against the new AI data centers threatening to pollute communities andraise residents’ electricity bills. But no matter what form AI slop-refusal takes, it will need to be a group effort.

“It’s like with the climate debate, we’re not going to get out of this shitshow with individual actions alone,” she added. “I think that’s the million dollar question, is what is the relationship between this kind of individual empowerment work and collective pushback.”

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Residential utility bills rose 6% on average nationwide in August compared with the same period last year, according to the Energy Information Administration.

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