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black holes

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Fanciful illustration of galaxies with various geometric shapes at their centers.
mathematical physics

Mathematicians Find an Infinity of Possible Black Hole Shapes

By Steve Nadis
January 24, 2023
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In three-dimensional space, the surface of a black hole must be a sphere. But a new result shows that in higher dimensions, an infinite number of configurations are possible.

A panoramic image of the cosmos shows hundreds of galaxies, including four blobs of light that are magnified and labeled with their corresponding redshifts.
astrophysics

Standard Model of Cosmology Survives a Telescope’s Findings

By Rebecca Boyle
January 20, 2023
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Reports that the James Webb Space Telescope killed the reigning cosmological model turn out to have been exaggerated. But astronomers still have much to learn from distant galaxies glimpsed by Webb.

A woman stands in a darkened laboratory next to a shallow tank of water that glows green.
Q&A

She Turns Fluids Into ‘Black Holes’ and ‘Inflating Universes’

By Thomas Lewton
December 12, 2022
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By using fluids to model inaccessible realms of the cosmos, Silke Weinfurtner is “looking for a deeper truth beyond one system.” But what can such experiments teach us?

quantum gravity

Physicists Create a Holographic Wormhole Using a Quantum Computer

By Natalie Wolchover
November 30, 2022
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The unprecedented experiment explores the possibility that space-time somehow emerges from quantum information.

A bright purple splotch surrounded by concentric purple rings.
astrophysics

Brightest-Ever Space Explosion Reveals Hints of Dark Matter

By Jonathan O'Callaghan
October 26, 2022
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A recent gamma-ray burst known as the BOAT — “brightest of all time” — appears to have produced a high-energy particle that shouldn’t exist. For some, dark matter provides the explanation.

quantum gravity

Black Hole's Orbiting Ring of Light Could Encrypt Its Inner Secrets

By Thomas Lewton
September 8, 2022
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Physicists have discovered that the ring of photons orbiting a black hole exhibits a special kind of symmetry, hinting at a deeper meaning.

An illustration of a blue swirling galaxy inside an amillary sphere. A black hole appears in the center.
black holes

What Drives Galaxies? The Milky Way’s Black Hole May Be the Key.

By Thomas Lewton
August 23, 2022
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Supermassive black holes have come to the fore as engines of galactic evolution, but new observations of the Milky Way and its central hole don’t yet hang together.

An illustration with a black disc in the middle evoking a black hole.
mathematical physics

At Long Last, Mathematical Proof That Black Holes Are Stable

By Steve Nadis
August 4, 2022
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The solutions to Einstein’s equations that describe a spinning black hole won’t blow up, even when poked or prodded.

Illustration of a rotating object that warps the space-time fabric around itself, as seen by eyes located in different places
general relativity

Mass and Angular Momentum, Left Ambiguous by Einstein, Get Defined

By Steve Nadis
July 13, 2022
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Surprising as it may sound, 107 years after the introduction of general relativity, the meanings of basic concepts are still being worked out.


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