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pulsars

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Stringy filaments wiggling against a black background.
Abstractions blog

Some Physicists See Signs of Cosmic Strings From the Big Bang

By Thomas Lewton
September 29, 2020
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Subtle aberrations in the clockwork blinking of stars could become “the result of the century.” That’s if the distortions are produced by a network of giant filaments left over from the birth of the universe.

Illustration of a magnetar with blue magnetic field lines.
Abstractions blog

The Most-Magnetic Objects in the Universe Attract New Controversy

By Erika K. Carlson
October 28, 2019
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How do magnetars get so magnetic? A study of stellar explosions shows that the long-accepted theory might be wrong.

Art for "Dark Matter Gets a Reprieve in New Analysis"
Abstractions blog

Dark Matter Gets a Reprieve in New Analysis

By Charlie Wood
April 29, 2019
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A strange glow coming from the Milky Way’s center was thought to be due to ordinary pulsars. But a new look at a years-old study shows that dark matter might still be responsible.

Lede art for "Troubled Times for Alternatives to Einstein’s Theory of Gravity"
astrophysics

Troubled Times for Alternatives to Einstein’s Theory of Gravity

By Katia Moskvitch
April 30, 2018
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New observations of extreme astrophysical systems have “brutally and pitilessly murdered” attempts to replace Einstein’s general theory of relativity.

Illustration for Extreme Radio Bursts
astrophysics

Astronomers Trace Radio Burst to Extreme Cosmic Neighborhood

By Katia Moskvitch
January 10, 2018
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A mysterious object that repeatedly bursts with ultra-powerful radio waves must live in an extreme environment — something like the one around a supermassive black hole.

An artist’s view of a pulsar near the center of the Messier 82 galaxy.
astrophysics

Galactic Glow, Thought to Be Dark Matter, Now Hints at Hidden Pulsars

By Katia Moskvitch
November 14, 2017
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A number of high-energy anomalies raised hopes that astrophysicists had seen their first direct glimpses of dark matter. New studies suggest a different source may be responsible.

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