CDM has various meanings in the Astrophysics category. Discover the full forms, definitions, and usage contexts of CDM in Astrophysics.
Cold dark matter is a hypothetical form of matter whose particles moved slowly compared to the speed of light (the cold in CDM) since the universe was approximately one year old (a time when the cosmic particle horizon contained the mass of one typical galaxy) and interact very weakly with ordinary matter and electromagnetic radiation.
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