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 The distribution of dark matter in a cluster of galaxies. Image: Max-Planck Institute for Astrophysics |
Dark matter refers to non-luminous matter particles whose presence is suggested because of the gravitational effects on the rotation rate of visible matter such galaxies and the presence of clusters of galaxies. |
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Introduction | First observational evidences | The galactic rotation problem |
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Dark matter within galaxies | Dark matter between galaxies | Dark matter Composition | |||
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Baryonic | Nonbaryonic | Neutrino | WIMP | String theory | |
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Updated 24th July 2007 |
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