Hacker News with Generative AI: Black Holes

X-ray flashes from nearby supermassive black hole accelerate mysteriously (news.mit.edu)
One supermassive black hole has kept astronomers glued to their scopes for the last several years. First came a surprise disappearance, and now, a precarious spinning act.

Black Holes, Astronomy, Astrophysics, Science, Space

81 points by rbanffy 4 days ago | 4 comments

Enough water to fill trillions of Earth's oceans found circling a black hole (earth.com)
Astronomers have identified a remarkable water reservoir hidden in a corner of the cosmos, circling a quasar more than 12 billion light-years away.

Space, Astronomy, Black Holes, Water

16 points by spopejoy 25 days ago | 4 comments

Images of gamma-ray flare from supermassive black hole M87 (newsroom.ucla.edu)
The first-ever photo of a black hole rocked the world in 2019, when the Event Horizon Telescope, or EHT, published an image of the supermassive black hole at the center of the galaxy M87, also known as Virgo A or NGC 4486, located in the constellation of Virgo.

Black Holes, Astronomy, Science

58 points by gmays 32 days ago | 18 comments

Tiny Black Holes Could Have Left Tunnels Inside Earth's Rocks (gizmodo.com)
A pair of imaginative cosmologists have great news for everyone: If a primordial black hole tunnels through your body, you probably won’t die.

Black Holes, Physics, Earth Science, Cosmology

24 points by rbanffy 33 days ago | 11 comments

Searching for small primordial black holes in planets, asteroids, here on Earth (sciencedirect.com)
Small primordial black holes could be captured by rocky planets or asteroids, consume their liquid cores from inside and leave hollow structures.

Black Holes, Astronomy, Earth Science, Planets, Asteroids

10 points by rntn 34 days ago | 5 comments

Researchers spot black hole feeding at 40x its theoretical limit (arstechnica.com)
How did supermassive black holes end up at the center of every galaxy? A while back, it wasn't that hard to explain: That's where the highest concentration of matter is, and the black holes had billions of years to feed on it. But as we've looked ever deeper into the Universe's history, we keep finding supermassive black holes, which shortens the timeline for their formation.

Black Holes, Astronomy, Cosmology, Physics

42 points by nithinj 56 days ago | 52 comments

Black Hole Cosmology (wikipedia.org)
A black hole cosmology (also called Schwarzschild cosmology or black hole cosmological model) is a cosmological model in which the observable universe is the interior of a black hole.

Cosmology, Black Holes, Physics, Theoretical Physics

5 points by typeofhuman 56 days ago | 0 comments

Show HN: Physically accurate black hole simulation using your iPhone camera (apple.com)
What would the world around you look like if you were staring at a black hole? This application places a black hole in the field of view of your iPhone’s camera and gravitationally "lenses" the resulting live video feeds just as a black hole would warp the light from surrounding stars.

Black Holes, Augmented Reality, Physics, Mobile Apps

316 points by yunyu 60 days ago | 115 comments

First image of our Milky Way's black hole may be inaccurate, scientists say (space.com)

Astronomy, Black Holes, Milky Way, Science

26 points by Stubb 71 days ago | 11 comments

Famous picture of black hole in our galaxy might not be accurate, research says (independent.co.uk)
The famous first picture of the supermassive black hole at the heart of our galaxy might not be accurate, a new study has claimed.

Astronomy, Black Holes, Science, Research

5 points by amichail 81 days ago | 0 comments

The Event Horizon Telescope image might need a correction (academic.oup.com)
We propose that the ring structure found by the Event Horizon Telescope Collaboration (EHTC) as the black hole shadow of Sgr A* is an artefact caused by the bumpy point spread function (PSF) of the EHT 2017 data.

Astronomy, Black Holes, Science, Research

59 points by niemandhier 82 days ago | 14 comments

First black hole discovered with two orbiting stars (cosmosmagazine.com)
For the first time, a black hole has been discovered with two orbiting stars, leading astrophysicists to suggest a surprising way such systems could form.

Astronomy, Black Holes, Binary Stars

5 points by geox 86 days ago | 0 comments

How do merging supermassive black holes pass the final parsec? (quantamagazine.org)
Galaxies have been merging into ever-bigger structures over the course of cosmic history. When galaxies merge, the supermassive black holes that sit in their centers must eventually merge, too, forming an even more gargantuan black hole.

Astrophysics, Black Holes, Galaxy Mergers

78 points by jnord 86 days ago | 107 comments

Black Hole Destroys Star, Goes After Another, NASA Missions Find (chandra.si.edu)
A giant black hole has destroyed one star and now is using that stellar debris to pummel another star or smaller black hole.

Space, Astronomy, Black Holes, Stars

18 points by raattgift 100 days ago | 3 comments

Stupendously Large: How big can black holes get? (bbc.com)
Astronomers are spotting a new class of giant black holes that dwarf even the supermassive ones found at the centre of galaxies. Could there be some even more monstrous lurking out there in the darkness of space?

Black Holes, Astronomy, Space

6 points by alexanderdmitri 102 days ago | 0 comments

Astronomers Spot a Black Hole with a Cosmic Wingspan (nytimes.com)
Astronomers announced last week that they had discovered a black hole spitting energy across 23 million light-years of intergalactic space.

Space, Astronomy, Black Holes

7 points by axiomdata316 114 days ago | 1 comments

A wobble from Mars could be sign of dark matter (phys.org)
In a new study, MIT physicists propose that if most of the dark matter in the universe is made up of microscopic primordial black holes—an idea first proposed in the 1970s—then these gravitational dwarfs should zoom through our solar system at least once per decade.

Dark Matter, Astronomy, Physics, Black Holes

30 points by wglb 116 days ago | 33 comments

Biggest ever seen black hole jets; blasting plasma well beyond their own galaxy (phys.org)
Astronomers have spotted the biggest pair of black hole jets ever seen, spanning 23 million light-years in total length. That's equivalent to lining up 140 Milky Way galaxies back to back.

Black Holes, Astronomy, Space, Physics

127 points by wglb 121 days ago | 79 comments

Signatures of gravitational atoms from black hole mergers (physics.aps.org)
Subrahmanyan Chandrasekhar famously stated that black holes are “the most perfect macroscopic objects there are in the Universe: The only elements in their construction are our concepts of space and time.”

Black Holes, Physics, Astronomy, Spacetime

116 points by thunderbong 123 days ago | 85 comments

We're all living in a black hole: The bold theory scientists can't disprove (sciencefocus.com)

Black Holes, Physics, Science, Cosmology

7 points by tu7001 125 days ago | 8 comments

Mathematicians prove Hawking wrong about the most extreme black holes (quantamagazine.org)

Black Holes, Physics, Mathematics, Science

148 points by worldvoyageur 150 days ago | 68 comments

Scientist performs the first nonlinear study of black hole mimickers (phys.org)

Black Holes, Physics, Science, Astronomy

15 points by wglb 151 days ago | 0 comments

Primordial black holes and the Higgs field in the early universe (theconversation.com)