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quantum gravity

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2022 in Review

The Year in Physics

By Natalie Wolchover
December 22, 2022
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In a year filled with sweet new observations in astronomy and tantalizing breakthroughs in condensed matter physics, the brand-new space telescope takes the cake.

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.

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.

Illustration of planets and other objects floating above the deformable sheet of space-time.
The Joy of Why

Where Do Space, Time and Gravity Come From?

By Steven Strogatz
May 4, 2022
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Einstein’s description of curved space-time doesn’t easily mesh with a universe made up of quantum wavefunctions. Theoretical physicist Sean Carroll discusses the quest for quantum gravity with host Steven Strogatz.

A man sits at a table in the middle of a wood-paneled library, perusing a large book.
Q&A

Pondering the Bits That Build Space-Time and Brains

By Charlie Wood
April 20, 2022
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Vijay Balasubramanian investigates whether the fabric of the universe might be built from information, and what it means that physicists can even ask such a question.

A red laser beam enters a glass cube and splits in two; half of the beam continues straight ahead and the other half shoots out of the glass cube at a right angle.
particle physics

A New Tool for Finding Dark Matter Digs Up Nothing

By Thomas Lewton
March 21, 2022
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Physicists are devising clever new ways to exploit the extreme sensitivity of gravitational wave detectors like LIGO. But so far, they’ve seen no signs of exotica.

particle physics

A Deepening Crisis Forces Physicists to Rethink Structure of Nature’s Laws

By Natalie Wolchover
March 1, 2022
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Physicists are reexamining a longstanding assumption: that big stuff consists of smaller stuff.

quantum gravity

In a Numerical Coincidence, Some See Evidence for String Theory

By Natalie Wolchover
January 21, 2022
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In a quest to map out a quantum theory of gravity, researchers have used logical rules to calculate how much Einstein’s theory must change. The result matches string theory perfectly.

A sphere enclosing a space with hyperbolic geometry.
quantum gravity

Symmetries Reveal Clues About the Holographic Universe

By Katie McCormick
January 12, 2022
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Physicists have been busy exploring how our universe might emerge like a hologram out of a two-dimensional sheet. New clues have come from the symmetries found on an infinitely distant “celestial sphere.”


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