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Dark Matter

Matter that produces no detectable energy, but that reveals its presence through its gravitational pull on the visible matter around it. Dark matter makes up more than 90 percent of all the matter in the universe. There are many possible forms for dark matter, but most current theories suggest a subatomic particle created in the Big Bang.


In galaxy cluster CL0024+1654, each yellow dot is a galaxy.

Dark Matter May 21, 2010

Radio Programs

‘Dark’ Lightning Bright evidence of dark matter August 17, 2021

Dark Monsters Darkness from darkness July 26, 2021

Pipsqueak Galaxies Tiny companions to the Milky Way April 26, 2021

Big Detectors A search for tiny particles in big planets February 26, 2021

Sculptor Galaxies A galaxy with a dark void December 7, 2020

Early Birth Giving birth to dark matter March 4, 2020

Still Hunting Continuing the search for dark matter March 3, 2020

Galactic Twin A galactic twin in the evening sky October 27, 2019

Death by Dark Matter Death by dark matter October 1, 2019

Massive Milky Way Taking the measure of the Milky Way June 24, 2019

Milky Way Halo A dark halo around the Milky Way January 24, 2019

Dark Matter Matters Dark matter stays dark June 12, 2018

Coma Galaxies Gluing together clusters of galaxies May 11, 2018

Local Supercluster “Nesting” the structure of the universe January 13, 2017

Dark Matters Lighting up the darkness December 16, 2016

Milky Way Halo Extending our home galaxy September 29, 2016

Dark Alternatives New light on dark matter August 29, 2016

Dark Downtown? The glow of the galaxy’s busy downtown August 16, 2016

Lacy Galaxies Finding big but hazy galaxies March 31, 2016

Coma Cluster A bright but dark galaxy cluster March 30, 2016

Featured Images

NGC 247, a galaxy in Sculptor

Galactic Dark Zone December 7, 2020

View of the underground Soudan Laboratory

Underground Astronomy January 26, 2015