Ray Weymann is a retired astronomer and astrophysicist, associated with the Carnegie Institution of Washington. His PhD is from Princeton University. He is a founder of the Climate Science Rapid Response Team, a member National Academy of Sciences (1984),^[1] and past president of the Astronomical Society of the Pacific 1973-1975.

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He has made notable contributions to astronomy in the areas of the evolution of high redshift galaxies, and mass ejection from active galaxies.