Hacker News with Generative AI: Universe

Half of the universe's hydrogen gas, long unaccounted for, has been found (news.berkeley.edu)
Astronomers tallying up all the normal matter — stars, galaxies and gas — in the universe today have come up embarrassingly short of the total matter produced in the Big Bang 13.6 billion years ago.

Astronomy, Universe, Cosmology, Hydrogen

7 points by gmays 1 day ago | 0 comments

Major Problem in Physics Could Be Fixed If the Whole Universe Was Spinning (sciencealert.com)
Earth rotates, the Sun rotates, the Milky Way rotates – and a new model suggests the entire Universe could be rotating. If confirmed, it could ease a significant tension in cosmology.

Physics, Cosmology, Universe, Rotation

11 points by amichail 9 days ago | 5 comments

AI image recognition detects bubble-like structures in the universe (phys.org)
To learn more about the deepest reaches of our own galaxy and the mysteries of star formation, Japanese researchers have created a deep learning model.

Artificial Intelligence, Astronomy, Deep Learning, Universe

110 points by PaulHoule 26 days ago | 78 comments

Spaghetti science: What pasta reveals about the universe (bbc.com)
When you see pasta, your brain probably doesn't jump to the secrets of the universe. But for almost a century, world-leading physicists have puzzled over spaghetti's counterintuitive properties.

Physics, Science, Food, Universe

48 points by pseudolus 36 days ago | 16 comments

New high-definition images released of the baby universe (princeton.edu)
New research by the Atacama Cosmology Telescope (ACT) collaboration has produced the clearest images yet of the universe’s infancy — the earliest cosmic time yet accessible to humans.

Astronomy, Cosmology, Science, Universe

12 points by layer8 37 days ago | 0 comments

Survey of physicists about the threat of vacuum decay (effectivealtruism.org)
TLDR: Vacuum decay is a hypothesized scenario where the universe's apparent vacuum state could transition to a lower-energy state. According to current physics models, if such a transition occurred in any location — whether through rare natural fluctuations or by artificial means — a region of "true vacuum" would propagate outward at near light speed, destroying the accessible universe as we know it by deeply altering the effective physical laws and releasing vast amounts of energy.

Physics, Science, Hypothetical Scenarios, Universe, Existential Risks

8 points by jessriedel 43 days ago | 2 comments

Astronomers discover 'Quipu', the single largest structure in the known universe (livescience.com)

Astronomy, Universe, Discovery, Space

9 points by bookofjoe 55 days ago | 0 comments

Cosmologists Try a New Way to Measure the Shape of the Universe (quantamagazine.org)
Is the universe flat and infinite, or something more complex? We can’t say for sure, but a new search strategy is mapping out the subtle signals that could reveal if the universe has a shape.

Cosmology, Universe, Science, Physics

36 points by jandrewrogers 84 days ago | 2 comments

Alien Truth (paulgraham.com)
If there were intelligent beings elsewhere in the universe, they'd share certain truths in common with us.

Alien Life, Philosophy, Universe

6 points by andsoitis 96 days ago | 3 comments

Dark Energy May Not Exist: Something Stranger Might Explain the Universe (sciencealert.com)
There might not be a mysterious 'dark' force accelerating the expansion of the Universe after all. The truth could be much stranger – bubbles of space where time passes at drastically different rates.

Cosmology, Physics, Universe, Time

74 points by NelsonMinar 112 days ago | 76 comments

A chart that shows everything that has ever existed (economist.com)
Some 13.8bn years ago, the universe came into existence in the Big Bang.

Universe, Science, Big Bang

17 points by asplake 125 days ago | 6 comments

First section of Euclid space telescope's map of the universe revealed (theguardian.com)
The first chunk of what will be the largest 3D map of the universe ever made has been revealed, putting 14 million galaxies – not to mention tens of millions of stars in our own Milky Way – on show in incredible detail.

Space Exploration, Astronomy, Mapping, Universe

6 points by Brajeshwar 191 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 193 days ago | 78 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 225 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 237 days ago | 0 comments

New Horizons Measurements Shed New Light on the Darkness of the Universe (hubblesite.org)