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A single, 'naked' black hole confounds theories of the young cosmos

news.ycombinator.com Charlie Wood 2025-09-25 05:27:12

A black hole unlike any seen before has been spotted in the early universe. It’s huge and appears to be essentially on its own, with few stars circling it. The object, which may represent a whole new class of enormous “naked” black holes, upends the textbook understanding of the young universe. “This is completely off the scale,” said Roberto Maiolino, an astrophysicist at the University of Cambridge who helped reveal the nature of the object in a preprint posted on August 29. “It’s terribly ex

Topics: black dots holes red universe

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Exploding Primordial Black Holes Could ‘Rewrite the History of the Universe’

gizmodo.com Gayoung Lee 2025-09-29 03:40:17

It’s been a fantastic week for Stephen Hawking’s black hole theories. Yesterday, LIGO confirmed the famed physicist’s prediction about black hole mergers. Now, another team believes they’ve found a way to observe primordial black holes—cosmic behemoths that emerged not from the ashes of dying stars but from the chaos of the early universe. In a paper published September 9 in Physical Review Letters, a team of physicists make the bold prediction that, within the next decade, we will be able to w

Topics: black hawking holes primordial universe

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LIGO’s Sharpest Detection Yet Confirms Famous Stephen Hawking Theory

gizmodo.com Gayoung Lee 2025-10-01 16:00:00

LIGO’s discovery of gravitational waves—ripples in space-time from powerful cosmic events—hit astrophysics more like a tidal wave than a ripple. At the dawn of its tenth anniversary, the multinational collaboration has set another scientific milestone, this time solving not one but two mysteries in black hole physics. A paper published today in Physical Review Letters describes how the LIGO-VIRGO-KAGRA (LVK) Collaboration captured the sharpest-ever gravitational wave signal from a black hole me

Topics: black gravitational hole holes ligo

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Scientists Discover Black Hole Created Less Than One Second After the Big Bang

futurism.com Unknown 2025-10-06 14:45:29

Astronomers examining data from the James Webb Space Telescope say they've spotted what might be the oldest black hole in the universe, born less than a second after the Big Bang. Their findings, published in a new study awaiting peer review, could offer the best evidence yet of the existence of what's known as a primordial black hole, a hypothetical object that's divided scientists for decades. Potentially far smaller than their modern counterparts — perhaps as tiny as a planet or even an ato

Topics: black hole holes matter universe

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A geothermal network in Colorado could help a rural town diversify its economy

arstechnica.com Unknown 2025-11-02 22:15:00

This article originally appeared on Inside Climate News, a nonprofit, non-partisan news organization that covers climate, energy, and the environment. Sign up for their newsletter here. Hayden, a small town in the mountains of northwest Colorado, is searching for ways to diversify its economy, much like other energy communities across the Mountain West. For decades, a coal-fired power plant, now scheduled to shut down in the coming years, served as a reliable source of tax revenue, jobs, and e

Topics: boreholes cooling drilling energy town

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Installing a mini-split AC in a Brooklyn apartment

news.ycombinator.com Unknown 2025-11-20 03:06:03

Last year, 2024, we replaced four PTACs with a mini-split AC. I’ve been asked about it often enough (by neighbors, coworkers, friends) that I decided to write up the experience. Hopefully it’s useful for you, too. Overall this cost us about $40k, including the cost for closing up the PTAC holes. We’ll probably never make the money back on electricity cost savings, so the main benefits are that we have more quiet and more stable temperatures now and overall I’m glad that we did it. (I’ll use th

Topics: ac holes old pipes work

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Heaviest Black Hole Ever Found Pushes Limit of What’s Cosmologically Possible

gizmodo.com Gayoung Lee 2025-11-25 10:45:21

The largest black hole ever detected is 36 billion times the mass of our Sun. It exists near the upper limit predicted by our cosmological models, leaving astronomers with burning questions surrounding the relationship between black holes and their galaxy hosts. In a paper published August 7 in Monthly Notices of the Royal Astronomical Society, researchers announced the discovery of a black hole inside a supermassive galaxy 5 billion light-years from Earth, dubbed the Cosmic Horseshoe. The newl

Topics: black cosmic galaxy hole holes

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Coronary artery calcium testing can reveal plaque in arteries, but is underused

news.ycombinator.com Paula Span 2025-12-21 05:45:07

A long list of Lynda Hollander’s paternal relatives had heart disease, and several had undergone major surgeries. So when she hit her mid-50s and saw her cholesterol levels creeping up after menopause, she said, “I didn’t want to take a chance.” A cardiologist told Ms. Hollander that based on factors like age, sex, cholesterol and blood pressure, she faced a moderate risk of a major cardiac event, like a heart attack, within the next 10 years. Doctors typically counsel such patients about the

Topics: cholesterol didn heart hollander ms

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Newly Discovered ‘Infinity Galaxy’ Could Prove How Ancient Supermassive Black Holes Formed

wired.com Jorge Garay 2026-01-01 14:00:00

A team of astronomers have discovered a curious figure in the universe. It is two distant galaxies colliding with each other to form a larger structure. From Earth’s perspective, the junction of the disks resembles the number eight lying down, similar to the infinity symbol (∞). Because of this resemblance, the researchers—who are based at the universities of Yale and Copenhagen—have nicknamed it the “Infinity Galaxy” and have detailed their discovery in a paper published in the Astrophysical J

Topics: black galaxy hole holes supermassive

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Bizarre "Infinity Galaxy" Could Hold the Secrets of Supermassive Black Holes

futurism.com Unknown 2026-01-03 18:45:01

Astronomers using data collected by the James Webb Space Telescope have discovered a spectacular cosmic object they're calling the "Infinity Galaxy." The site of an epic head-on collision between two galaxies, it could harbor the secrets to how the heaviest black holes in the universe, the supermassive black holes found at the hearts of galaxies, are born and reach their unbelievable masses — masses extreme enough to organize trillions of stars around them. "Everything is unusual about this ga

Topics: black hole holes supermassive van

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LIGO detects most massive black hole merger to date

news.ycombinator.com Unknown 2026-01-15 18:06:51

The LIGO-Virgo-KAGRA (LVK) Collaboration has detected the merger of the most massive black holes ever observed with gravitational waves using the US National Science Foundation (NSF)-funded LIGO observatories. The powerful merger produced a final black hole approximately 225 times the mass of our Sun. The signal, designated GW231123, was detected during the fourth observing run of the LVK network on November 23, 2023. LIGO, the Laser Interferometer Gravitational-wave Observatory, made history i

Topics: black collaboration gravitational holes ligo

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LIGO Detects Most Massive Black Hole Merger to Date

news.ycombinator.com Unknown 2026-01-16 00:06:51

The LIGO-Virgo-KAGRA (LVK) Collaboration has detected the merger of the most massive black holes ever observed with gravitational waves using the US National Science Foundation (NSF)-funded LIGO observatories. The powerful merger produced a final black hole approximately 225 times the mass of our Sun. The signal, designated GW231123, was detected during the fourth observing run of the LVK network on November 23, 2023. LIGO, the Laser Interferometer Gravitational-wave Observatory, made history i

Topics: black collaboration gravitational holes ligo

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Scientists Detect Sign of Something Impossible Out in Deep Space

futurism.com Unknown 2026-01-16 09:36:51

The very concept of black holes seems improbable. Albert Einstein infamously refused to believe they could exist, even though his theory of general relativity was instrumental in predicting them. Now, scientists have witnessed evidence of something about these baffling cosmic monstrosities that further stretches the boundaries of both physics and credulity: a titanic collision of two already enormous black holes so utterly extreme that it has scientists wondering if the event they seem to have

Topics: black hole holes mass merger

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Playdate Season 2 review: Taria & Como and Black Hole Havoc

engadget.com Unknown 2026-01-31 11:00:42

We've officially made it to the end of Playdate Season Two, and what a season it's been. Despite having half the number of titles as Season One, this latest round of weekly game releases has made a much stronger impression (on me, at least). If nothing else, it's just been cool to experience the new games in real time with other Playdate owners all at once, which the staggered rollout of the console didn't really allow for with the first season. In an email ahead of the final release, the team a

Topics: black game holes season taria

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Latest Tech News

A single, 'naked' black hole confounds theories of the young cosmos

Exploding Primordial Black Holes Could ‘Rewrite the History of the Universe’

LIGO’s Sharpest Detection Yet Confirms Famous Stephen Hawking Theory

Scientists Discover Black Hole Created Less Than One Second After the Big Bang

A geothermal network in Colorado could help a rural town diversify its economy

Installing a mini-split AC in a Brooklyn apartment

Heaviest Black Hole Ever Found Pushes Limit of What’s Cosmologically Possible

Coronary artery calcium testing can reveal plaque in arteries, but is underused

Newly Discovered ‘Infinity Galaxy’ Could Prove How Ancient Supermassive Black Holes Formed

Bizarre "Infinity Galaxy" Could Hold the Secrets of Supermassive Black Holes

LIGO detects most massive black hole merger to date

LIGO Detects Most Massive Black Hole Merger to Date

Scientists Detect Sign of Something Impossible Out in Deep Space

Playdate Season 2 review: Taria & Como and Black Hole Havoc

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