Dark matter is matter that cannot be detected by electromagnetic radiation, hence dark.

Dark matter are divided into three different types (HDM, WDM, CDM) :

* Hot dark matter - nonbaryonic particles that move ultrarelativistically
* Warm dark matter - nonbaryonic particles that move relativistically
* Cold dark matter - nonbaryonic particles that move non-relativistically

[ Reference - Wiki ]

Published on 16 Sep 2008 | Science

Tags :cdm, cold dark matter, dark matters, electromagnetic radiation, hdm, particles, warm dark matter, wdm

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