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An illustration of gravity as particles
quantum gravity

Physicists Find a Way to See the ‘Grin’ of Quantum Gravity

By Natalie Wolchover
March 6, 2018
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A recently proposed experiment would confirm that gravity is a quantum force.

Edward Witten in his office at the Institute for Advanced Study in Princeton, New Jersey.
Q&A

A Physicist’s Physicist Ponders the Nature of Reality

By Natalie Wolchover
November 28, 2017
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Edward Witten reflects on the meaning of dualities in physics and math, emergent space-time, and the pursuit of a complete description of nature.

A wormhole split in two with swirls of blue on one side and swirls of pink on the other with a ringed planet in the background.
theoretical physics

Newfound Wormhole Allows Information to Escape Black Holes

By Natalie Wolchover
October 23, 2017
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Physicists theorize that a new “traversable” kind of wormhole could resolve a baffling paradox and rescue information that falls into black holes.

Warped time. Olena Shmahalo/Quanta Magazine
Abstractions blog

Quantum Gravity’s Time Problem

By Natalie Wolchover
December 1, 2016
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The effort to unify quantum mechanics and general relativity means reconciling totally different notions of time.

string theory

The Strange Second Life of String Theory

By K.C. Cole
September 15, 2016
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String theory has so far failed to live up to its promise as a way to unite gravity and quantum mechanics. At the same time, it has blossomed into one of the most useful sets of tools in science.

astrophysics

Colliding Black Holes Tell New Story of Stars

By Natalie Wolchover
September 6, 2016
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Just months after their discovery, gravitational waves coming from the mergers of black holes are shaking up astrophysics.

Quantized Columns

How Feynman Diagrams Almost Saved Space

By Frank Wilczek
July 5, 2016
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Richard Feynman’s famous diagrams weren’t just a way to do calculations. They represented a deep shift in thinking about how the universe is put together.

Abstractions blog

LIGO Reports Second Black-Hole Merger

By Natalie Wolchover
June 15, 2016
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The spokesperson for the Laser Interferometer Gravitational-Wave Observatory called it “a promising start to mapping the populations of black holes in our universe.”

astrophysics

After Black Holes Collide, a Puzzling Flash

By Kevin Hartnett
March 2, 2016
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A satellite spotted a burst of light just as gravitational waves rolled in from the collision of two black holes. Was the flash a cosmic coincidence, or do astrophysicists need to rethink what black holes can do?


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