Research NewsAstrophysics

Theorists Nix Distant Antimatter Galaxies

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Science  10 Oct 1997:
Vol. 278, Issue 5336, pp. 226
DOI: 10.1126/science.278.5336.226

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Despite the dreams of science fiction fans everywhere, the latest findings show that matter dominates the universe, and there are no antigalaxies. This is the conclusion of a trio of theorists after a lengthy analysis of the physics of matter-antimatter annihilation and the gamma-ray glow that pervades the sky. But their finding also underscores a long-standing mystery: why the big bang displayed such blatant favoritism toward matter.