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dark matter

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

Troubled Times for Alternatives to Einstein’s Theory of Gravity

April 30, 2018

New observations of extreme astrophysical systems have “brutally and pitilessly murdered” attempts to replace Einstein’s general theory of relativity.

Illustration for "Ultra-Accurate Clocks Lead Search for New Laws of Physics"
experimental physics

Ultra-Accurate Clocks Lead Search for New Laws of Physics

April 16, 2018

Atomic clocks are letting physicists tighten the lasso around elusive phenomena such as dark matter.

Illustration for "Trouble Detected in Infamous Dark Matter Signal"
dark matter

Trouble Detected in Infamous Dark Matter Signal

April 12, 2018

Independent scientists have cast serious doubt on a claimed detection of dark matter.

Illustration for first stars
cosmology

Whisper From the First Stars Sets Off Loud Dark Matter Debate

March 29, 2018

A surprise discovery announced a month ago suggested that the early universe looked very different than previously believed. Initial theories that the discrepancy was due to dark matter have come under fire.

Photo of the cosmos by the multi-lensed Dragonfly telescope
Abstractions blog

A Victory for Dark Matter in a Galaxy Without Any

March 28, 2018

Paradoxically, a small galaxy that seems to contain none of the invisible stuff known as “dark matter” may help prove that it exists.

520px illustration of bottle beam
nuclear physics

Neutron Lifetime Puzzle Deepens, but No Dark Matter Seen

February 13, 2018

Two methods of measuring the neutron’s longevity give different answers, creating uncertainty in cosmological models. But no one has a clue what the problem is.

A projection showing how the positions of some 2 million stars measured by the Gaia satellite are expected to evolve in the future.
Abstractions blog

Deathblow Dealt to Dark Matter Disks

November 17, 2017

New data tracking the movements of millions of Milky Way stars have effectively ruled out the presence of a “dark disk” that could have offered important clues to the mystery of dark matter.

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

November 14, 2017

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.

Illustration: window showing dark matter map
cosmology

Scientists Unveil New Inventory of Universe’s Dark Contents

August 3, 2017

The first major results from the Dark Energy Survey signal the start of a new era of cosmology.