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October 2010

This frame from the Via Lactea II visualization shows the dark matter halo as it might look today, more than 13.7 billion years since the Big Bang. Gravity has drawn the partcles into dense clumps, which retain much of their stucture as they are drawn toward the halo’s center.  The color scale shows dark matter density increasing from blue to white.

Seeing the invisible

October 6th, 2010 Updated: February 22nd, 2013

Armed with computing power from Oak Ridge National Laboratory, researchers are detailing the nature of dark matter surrounding a galaxy much like our own Milky Way.

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Dark matter predictions put to test

October 6th, 2010 Updated: March 16th, 2011

Collisions in dark matter “clumps” should produce gamma rays, but a satellite looking for them has come up empty so far.

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Parsing particle experiments

October 6th, 2010 Updated: March 16th, 2011

A detector suggested dark matter collisions, but no other test has seen similar signs.

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