Now We Know That Dark Matter Isn’t Primordial Black Holes

Now We Know That Dark Matter Isn’t Primordial Black Holes

For over fifty years, scientists have theorized that roughly 85% of matter in the Universe’s is made up of a mysterious, invisible mass. Since then, multiple observation campaigns have indirectly witnessed the effects that this “Dark Matter” has on the Universe. Unfortunately, all attempts to detect it so far have

Two Unusual Galaxies Shake Up the Dark Matter Debate, Again

Astronomers have found two galaxies that appear devoid of dark matter, which they argue is in fact strong evidence of the elusive particle's existence.

When it comes to the nature of dark matter, astronomers are still largely, well, in the dark. The existence of this mysterious substance was hypothesized more than 40 years ago to explain discrepancies between the calculations of how galaxies ought to behave, based on their mass, and what was actually

Ghostly Galaxies Hint at Dark Matter Breakthrough

The bizarre galaxy NGC 1052-DF2, a diffuse collection of stars, gas and dust that is apparently devoid of dark matter.

Much as a ripple in a pond reveals a thrown stone, the existence of the mysterious stuff known as dark matter is inferred via its wider cosmic influence. Astronomers cannot see it directly, but its gravity sculpts the birth, shape and movement of galaxies. This makes a discovery from last

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?

Dark

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

universe

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

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