Hacker News with Generative AI: Cosmology

Coincidences that make our existence possible (bigthink.com)
There are a few small cosmic details that, if things were just a little different, wouldn’t have allowed our existence to be possible.

Cosmology, Existence, Science, Probability

33 points by Brajeshwar 3 days ago | 46 comments

Probing unknown unknowns: A new generation of telescopes (mappingignorance.org)
In recent decades, we’ve learnt huge amounts about the universe and its history. The rapidly developing technology of telescopes – both on Earth and in space – has been a key part of this process, and those that are due to start operating over the next two decades should push the boundaries of our understanding of cosmology much further.

Astronomy, Telescopes, Cosmology, Science

42 points by Gedxx 14 days ago | 9 comments

Black hole feeds at 40 times the 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, Astrophysics, Cosmology, Science

5 points by rbanffy 16 days ago | 0 comments

Study: Dark matter doesn't exist, the universe is 27B years old (earth.com)

Cosmology, Physics, Universe, Astronomy

54 points by msolujic 37 days ago | 78 comments

The 'Beautiful Confusion' of the First Billion Years Comes into View (quantamagazine.org)
Astronomers are reveling in the James Webb Space Telescope’s discoveries about the formative epoch of cosmic history.

Astronomy, Space Exploration, Cosmology, Early Universe

24 points by bookofjoe 41 days ago | 0 comments

New research suggests that our universe has no dark matter (phys.org)
A study, published today in The Astrophysical Journal, challenges the current model of the universe by showing that, in fact, it has no room for dark matter.

Physics, Astronomy, Cosmology, Dark Matter

92 points by squircle 46 days ago | 36 comments

Webb Researchers Discover Lensed Supernova, Confirm Hubble Tension (nasa.gov)
Measuring the Hubble constant, the rate at which the universe is expanding, is an active area of research among astronomers around the world who analyze data from both ground- and space-based observatories.

Space, Astronomy, Science, Cosmology

5 points by r721 48 days ago | 0 comments

Operator algebras and the substructure of space and time (quantamagazine.org)
Motivated by the mysteries of black holes, theorists are advancing their ability to describe space-time as a hologram.

Physics, Cosmology, Quantum Mechanics, Holograms

88 points by pseudolus 57 days ago | 29 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 68 days ago | 8 comments

Do we live in a shell universe? (phys.org)
The universe might not be as you think.

Cosmology, Physics, Universe

4 points by birriel 69 days ago | 0 comments

"dark stars" theory could solve universe's greatest mystery (sciencefocus.com)
A new theory suggests that dark matter, the mysterious substance that makes up 85% of the Universe's mass, could be made up of 'dark stars' - hypothetical stars that are powered by dark matter instead of hydrogen fusion.

Cosmology, Dark Matter, Physics, Astronomy, Science

14 points by jandrewrogers 75 days ago | 0 comments

The universe had a secret life before the Big Bang, new study hints (livescience.com)

Cosmology, Physics, Big Bang, Universe

16 points by jnord 81 days ago | 0 comments

Einstein's Other Theory of Everything (nautil.us)

Physics, Albert Einstein, Cosmology

178 points by dnetesn 81 days ago | 132 comments

Is the Hubble crisis connected with the extinction of dinosaurs? (2022) (arxiv.org)

Cosmology, Paleontology, Science

6 points by elashri 86 days ago | 0 comments

The possibilities for dark matter have shrunk (sciencenews.org)