Dark Matter

In astronomy and cosmology, dark matter is matter that is inferred to exist from gravitational effects on visible matter and background radiation, but is undetectable by emitted or scattered electromagnetic radiation. Its existence was hypothesized to account for discrepancies between measurements of the mass of galaxies, clusters of galaxies and the entire universe made through dynamical and general relativistic means, and measurements based on the mass of the visible "luminous" matter these objects contain: stars and the gas and dust of the interstellar and intergalactic medium. It is probably cold and if so, probably weakly interacting massive particles or many primordial intermediate mass black holes between 30 and 300,000 solar masses, or both. (wikipedia)

SVP asks is gravity the only bonding force in existence? Of course not.

See Also

7B.15 - Sympathetic Outreach
Celestial Radiation and Terrestrial Outreach
Connecting Link
Sympathetic Outreach

Page last modified on Monday 30 of May, 2011 04:48:49 MDT

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