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gravity

Latest Articles

Abstractions blog

Why Black Hole Interiors Grow (Almost) Forever

By Natalie Wolchover
December 6, 2018
Comment
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The renowned physicist Leonard Susskind has identified a possible quantum origin for the ever-growing volume of black holes.

Art for "How Holography Could Help Solve Quantum Gravity"
In Theory

How Holography Could Help Solve Quantum Gravity

By Thomas Lin
November 14, 2018
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In the latest campaign to reconcile Einstein’s theory of gravity with quantum mechanics, many physicists are studying how a higher dimensional space that includes gravity arises like a hologram from a lower dimensional particle theory.

Valeria Pettorino in the woods near CosmoStat
Q&A

An Italian Cosmologist Who Wanders in Dante’s Dark Wood

By Siobhan Roberts
November 13, 2018
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A scientist and programmer with a literary bent, Valeria Pettorino thinks multiple angles and diverse points of view are needed to unriddle the nature of dark matter and dark energy.

Photo of Cohl Furey
fundamental physics

The Peculiar Math That Could Underlie the Laws of Nature

By Natalie Wolchover
July 20, 2018
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New findings are fueling an old suspicion that fundamental particles and forces spring from strange eight-part numbers called “octonions.”

Illustration of a black hole with a Cauchy horizon
general relativity

Mathematicians Disprove Conjecture Made to Save Black Holes

By Kevin Hartnett
May 17, 2018
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Mathematicians have disproved the strong cosmic censorship conjecture. Their work answers one of the most important questions in the study of general relativity and changes the way we think about space-time.

Lede art for "Troubled Times for Alternatives to Einstein’s Theory of Gravity"
astrophysics

Troubled Times for Alternatives to Einstein’s Theory of Gravity

By Katia Moskvitch
April 30, 2018
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New observations of extreme astrophysical systems have “brutally and pitilessly murdered” attempts to replace Einstein’s general theory of relativity.

Photo of the cosmos by the multi-lensed Dragonfly telescope
Abstractions blog

A Victory for Dark Matter in a Galaxy Without Any

By Joshua Sokol
March 28, 2018
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Paradoxically, a small galaxy that seems to contain none of the invisible stuff known as “dark matter” may help prove that it exists.

Photo of Stephen Hawking in 1979 in Princeton, New Jersey.
Abstractions blog

Why Stephen Hawking’s Black Hole Puzzle Keeps Puzzling

By Jennifer Ouellette
March 14, 2018
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The renowned British physicist, who died at 76, left behind a riddle that could eventually lead his successors to the theory of quantum gravity.

Photograph of Albert Einstein in his office at the University of Berlin, published in the USA in 1920.
Abstractions blog

How Einstein Lost His Bearings, and With Them, General Relativity

By Kevin Hartnett
March 14, 2018
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By 1913, Albert Einstein had nearly completed general relativity. But a simple mistake set him on a tortured, two-year reconsideration of his theory. Today, mathematicians still grapple with the issues he confronted.


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