
UNIVERSEFACTS.BLOGSPOT.COM
The Science of the Universe ©Visit the How to defend Earth. The Science of the Universe ©. Saturday, March 28, 2009. This is a connection to Earth Defense: http:/ earthdefence1.blogspot.com/. In astronomy and cosmology, dark matter is hypothetical matter that is undetectable by its emitted radiation, but whose presence can be inferred from gravitational effects on visible matter. Dark matter is postulated to explain the flat rotation curves of spiral galaxies and other evidence of "missing mass" in the universe. Life in our Galaxy.
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