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The fifth essence : the search for dark matter in the universe

Author / Creator
Krauss, Lawrence M., 1954-
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Summary

More than 2,000 years ago, Aristotle proposed adding a new substance to the four elements of earth, air, fire, and water--quintessence. Here, there is overwhelming evidence that more than 90 percen...

More than 2,000 years ago, Aristotle proposed adding a new substance to the four elements of earth, air, fire, and water--quintessence. Here, there is overwhelming evidence that more than 90 percent of the universe is made up of a mysterious form of matter. Illustrated.

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