The Cosmic Asymmetry

Between

Matter and Antimatter

Frank Wilczek

Reprinted from Scientific American, December 1980

Scanned from Particle Physics in the Cosmos, Readings from Sci-

enti�c American, eds. Richard A. Carrigan Jr. and W. Peter Trower,

W.H. Freeman & Co., 1989, pp. 164{177.

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