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cosmology

Latest Articles

Center of the Milky Way
Abstractions blog

An Alternative to Dark Matter Passes Critical Test

By Charlie Wood
July 28, 2020
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Modified gravity theories have never been able to describe the universe’s first light. A new formulation does.

Magnetic fields in the universe.
cosmology

The Hidden Magnetic Universe Begins to Come Into View

By Natalie Wolchover
July 2, 2020
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Astronomers are discovering that magnetic fields permeate much of the cosmos. If these fields date back to the Big Bang, they could solve a major cosmological mystery.

Katie Mack portrait.
Q&A

This Cosmologist Knows How It’s All Going to End

By Dan Falk
June 22, 2020
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The astrophysicist and social media phenom Katie Mack is ready to tell you about the fate of the universe.

Animation of black hole formation.
mathematical physics

New Math Proves That a Special Kind of Space-Time Is Unstable

By Steve Nadis
May 11, 2020
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Einstein’s equations describe three canonical configurations of space-time. Now one of these three — important in the study of quantum gravity — has been shown to be inherently unstable.

An image of space with lines emanating from a central point, as if the viewer is traveling at warp speed.
Abstractions blog

What Might Be Speeding Up the Universe’s Expansion?

By Thomas Lewton
April 27, 2020
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Physicists have proposed extra cosmic ingredients that could explain the faster-than-expected expansion of space.

Multimedia

What Is the Geometry of the Universe?

By Erica Klarreich +1 authors
Lucy Reading-Ikkanda
March 16, 2020
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In our mind’s eye, the universe seems to go on forever. But using geometry we can explore a variety of three-dimensional shapes that offer alternatives to “ordinary” infinite space.

Cosmic reionization video.
Abstractions blog

How the Cosmic Dark Ages Snuffed Out All Light

By Dana Najjar
March 2, 2020
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The recent discovery of some of the first galaxies in the universe illuminates the darkest era in cosmic history.

Antares photograph.
Abstractions blog

New Wrinkle Added to Cosmology’s Hubble Crisis

By Natalie Wolchover
February 26, 2020
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A problem confronts cosmology: Two independent measurements of the universe’s expansion give incompatible answers. Now a third method, advanced by an astronomy pioneer, appears to bridge the divide.

Gif of a spinning sphere that has a dappled blue, green and red pattern.
Abstractions blog

How Ancient Light Reveals the Universe’s Contents

By Charlie Wood
January 28, 2020
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A photograph of the infant cosmos reveals the precise amounts of dark matter and dark energy in the universe, leaving precious little room for argument.


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