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.

Resources

 Beyond the Solar System: Cosmology: Dark Matter In the universe, what you see is certainly not...

Featured Images

Optical and X-ray image of the galaxy cluster Abell 383
 Brilliant Darkness Friday, March 16, 2012
Alpha Magnetic Spectrometer-2 attached to the International Space Station
 On Duty Monday, May 23, 2011
Space shutle Endeavour launches on its final mission, June 16, 2011
 Final Endeavour Monday, May 16, 2011
This giant cluster of galaxies and hot gas provides evidence of dark matter.
 Cosmic Bullets Tuesday, July 20, 2010
Galactic Glow Friday, February 8, 2008
Lighting up the Darkness Tuesday, October 3, 2006

Radio Programs

 AMS-2 Looking for antimatter Tuesday, April 19, 2011
Last Ride Shuttling a big magnet into space Monday, April 18, 2011
Sunflower Galaxy A good night for galaxy-watching Thursday, March 31, 2011
Underground Astronomy IV Searching for dark matter in a dark location Friday, March 4, 2011
Underground Astronomy Astronomy in the lowest of places Tuesday, March 1, 2011
Dark Matter Searches II Brewing up some dark matter Friday, July 23, 2010
Dark Matter Searches Catching an invisible particle Thursday, July 22, 2010
Dark Matter Particle Big, heavy, but hard to find Wednesday, July 21, 2010
Bullet Cluster Catching a cosmic bullet Tuesday, July 20, 2010
Dark Matter Most of the universe goes missing Monday, July 19, 2010
Dark Search Searching for dark matter Thursday, October 29, 2009
More Axions Dark matter from "dead" stars Friday, May 22, 2009
Axions Looking for darkness from the Sun Thursday, May 21, 2009
More M87 Illuminating a galaxy's darkness Thursday, May 14, 2009
Fireball Looking into a great emptiness Tuesday, May 5, 2009
Dark Matters A new way to look for dark matter Wednesday, May 14, 2008
Galactic Antimatter Annihilation in the heart of the galaxy Thursday, April 24, 2008
Dark Stars Stars that never lit up Monday, April 21, 2008

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