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dark matter

Latest Articles

cosmology

Shadows in the Big Bang Afterglow Reveal Invisible Cosmic Structures

By Zack Savitsky
March 13, 2023
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Cosmologists are using secondary signatures from the cosmic microwave background to map the universe’s hidden matter.

golden planets look like they're moving through a twisting current
The Joy of Why

How Will the Universe End?

By Steven Strogatz
February 22, 2023
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Big Freeze, Big Rip, Big Crunch, Bounce or vacuum decay? Steven Strogatz speaks with theoretical cosmologist Katie Mack about the five ways that scientists think the universe could come to an end.

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.

astrophysics

The Enduring Mystery of the Dragonfly 44 Galaxy

By Lyndie Chiou
November 7, 2022
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A growing catalog of huge but dim galaxies such as Dragonfly 44 is forcing astronomers to invent new theories of galactic evolution.

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.

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.

astronomy

Four Years On, New Experiment Sees No Sign of ‘Cosmic Dawn’

By Ben Brubaker
February 28, 2022
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When astronomers tried to confirm a signal from the birth of the first stars after the Big Bang, they saw nothing.

Q&A

In Search of Cracks in Albert Einstein’s Theory of Gravity

By Thomas Lewton
February 23, 2022
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Celia Escamilla-Rivera is combining large data sets with supercomputers to test general relativity against its little-known competitors.

cosmology

Cosmologists Parry Attacks on the Vaunted Cosmological Principle

By Charlie Wood
December 13, 2021
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A central pillar of cosmology — the universe is the same everywhere and in all directions — is surviving a storm of possible evidence against it.


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