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astrophysics

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Spheres of three different sizes.
Abstractions blog

Debate Erupts Over How ‘Forbidden’ Black Holes Grow

By Adam Mann
November 3, 2020
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Once missing in action, middleweight black holes have finally been detected. Now researchers are trying to figure out how they grow from small ones.

Abstractions blog

Physics Nobel Awarded for Black Hole Breakthroughs

By Natalie Wolchover
October 6, 2020
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Roger Penrose, Reinhard Genzel and Andrea Ghez were awarded the Nobel Prize in Physics for their studies of black holes.

Black holes of various sizes
black holes

Physicists Argue That Black Holes From the Big Bang Could Be the Dark Matter

By Joshua Sokol
September 23, 2020
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It was an old idea of Stephen Hawking’s: Unseen “primordial” black holes might be the hidden dark matter. A new series of studies has shown how the theory can work.

Distorted galaxies
Abstractions blog

A New Cosmic Tension: The Universe Might Be Too Thin

By Charlie Wood
September 8, 2020
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Cosmologists have concluded that the universe doesn’t appear to clump as much as it should. Could both of cosmology’s big puzzles share a single fix?

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.

A magnetar.
astrophysics

A Surprise Discovery Points to the Source of Fast Radio Bursts

By Shannon Hall
June 11, 2020
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After a burst lit up their telescope “like a Christmas tree,” astronomers were able to finally track down the source of these cosmic oddities.

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.


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