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Brightest-Ever Space Explosion Reveals Hints of Dark Matter
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 New Tool for Finding Dark Matter Digs Up Nothing
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.
Four Years On, New Experiment Sees No Sign of ‘Cosmic Dawn’
When astronomers tried to confirm a signal from the birth of the first stars after the Big Bang, they saw nothing.
In Search of Cracks in Albert Einstein’s Theory of Gravity
Celia Escamilla-Rivera is combining large data sets with supercomputers to test general relativity against its little-known competitors.
Cosmologists Parry Attacks on the Vaunted Cosmological Principle
A central pillar of cosmology — the universe is the same everywhere and in all directions — is surviving a storm of possible evidence against it.
The Webb Space Telescope Will Rewrite Cosmic History. If It Works.
The James Webb Space Telescope has the potential to rewrite the history of the cosmos and reshape humanity’s position within it. But first, a lot of things have to work just right.
Is the Great Neutrino Puzzle Pointing to Multiple Missing Particles?
Years of conflicting neutrino measurements have led physicists to propose a “dark sector” of invisible particles — one that could simultaneously explain dark matter, the puzzling expansion of the universe, and other mysteries.
A Hint of Dark Matter Sends Physicists Looking to the Skies
After a search of neutron stars finds preliminary evidence for hypothetical dark matter particles called axions, astrophysicists are devising new ways to spot them.