Fritz Zwicky

Fritz Zwicky (February 14, 1898 – February 8, 1974) was a Swiss astronomer. He created the idea of dark matter.http://spiff.rit.edu/classes/phys440/lectures/gal_clus/gal_clus.html He worked at California Institute of Technology for most of his life.

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Category:Swiss astronomers
Category:California Institute of Technology faculty
Category:1898 births
Category:1974 deaths