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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

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

Dark Danger A dangerous passage through the galaxy May 7, 2015

Cold Dark Matter Getting cold to catch dark matter January 26, 2015

Soudan Laboratory Digging deep for dark matter January 25, 2015

Great Wall A wall of galaxies across the universe November 16, 2014

WIMP-y Glow Bright evidence of dark matter July 29, 2014

Dark Detections Looking for particles that don’t wimp out August 6, 2013

Dark Experiments Looking for the unseeable August 5, 2013

Dark Universe Adding up the universe August 4, 2013

Anti-Discovery The possible signature of dark matter June 25, 2013

Andromeda Galaxy A galactic twin in the evening sky September 10, 2012

AMS-2 Looking for antimatter April 18, 2011

Last Ride Shuttling a big magnet into space April 17, 2011

Sunflower Galaxy A good night for galaxy-watching March 30, 2011

Underground Astronomy IV Searching for dark matter in a dark location March 3, 2011

Underground Astronomy Astronomy in the lowest of places February 28, 2011

Featured Images

View of the underground Soudan Laboratory

Underground Astronomy January 26, 2015

Simulation of the early universe

Tangled Web May 10, 2014

Hubble image of a galaxy cluster and the deduced location of its dark matter

Dark Universe August 5, 2013

Alpha Magnetic Spectrometer aboard the International Space Station

Magnetic Personality June 26, 2013

Artist's concept of the Milky Way galaxy and its dark matter halo

Illuminating the Darkness February 9, 2013

Optical and X-ray image of the galaxy cluster Abell 383

Brilliant Darkness March 16, 2012

Alpha Magnetic Spectrometer-2 attached to the International Space Station

On Duty May 23, 2011

Space shutle Endeavour launches on its final mission, June 16, 2011

Final Endeavour May 16, 2011

Cosmic Bullets July 20, 2010