Black Holes Ruled Out As Universe’s Missing Dark Matter

A supernova (bright spot at lower left) and its host galaxy (upper center), as they would appear if gravitationally lensed by an intervening black hole (center).

For one brief shining moment after the 2015 detection of gravitational waves from colliding black holes, astronomers held out hope that the universe’s mysterious dark matter might consist of a plenitude of black holes sprinkled throughout the universe. UC Berkeley physicists have dashed those hopes.Based on a statistical analysis of

Oddball Galaxy Puts Dark Matter Theory to the Test

Dark Matter

A small, faint galaxy residing some 65 million light-years away has been threatening to upend scientists’ entire paradigm of dark matter—the supposedly ubiquitous particles thought to pervade the universe like a hidden cosmic skeleton. All galaxies should be surrounded by a more massive cloud of dark matter, the thinking goes,

Is Dark Matter Less ‘Lumpy’ Than Predicted?


Don Lincoln is a senior scientist at the U.S. Department of Energy's Fermilab, the country's largest Large Hadron Collider research institution. He also writes about science for the public, including his recent "The Large Hadron Collider: The Extraordinary Story of the Higgs Boson and Other Things That Will Blow Your Mind" (Johns

Most Accurate Map of Recent Universe Unveiled by Scientists


A new map of the universe has been unveiled by scientists, revealing the last seven billion years of the history of the cosmos.The results of the Dark Energy Survey show how dark matter is distributed across the galaxy. Until now, scientists used models to show where it fell. These models are