Darkness made visible

Cook, William J.
October 1992
U.S. News & World Report;10/19/92, Vol. 113 Issue 15, p65
Describes what and where the invisible matter is in the universe. Findings reported by astrophysicist Richard Ellis, of Durham University in England; Determining the amount, kind and location of matter in the universe; Work of the Hubble Space Telescope on AC 114, a massive cluster of galaxies; The search for massive compact halo objects (MACHOs); Searching for weakly interactive massive particles (WIMPs); More.


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