Great Debate
Sign in to saveAlso known as Shapley–Curtis Debate
astronomy debate held on 26 April 1920 at the Smithsonian Museum of Natural History between Harlow Shapley and Heber Curtis about whether spiral nebulae were different galaxies or part of the Milky Way
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Heber Doust Curtis
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Sun
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Immanuel Kant
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universe
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Milky Way
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galaxy
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NASA
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International Standard Book Number
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light-year
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theory of relativity
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speed of light in vacuum
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The New York Times
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Andromeda Galaxy
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supernova
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digital object identifier
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Edwin Hubble
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International Standard Serial Number
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Andromeda
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astronomer
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spiral galaxy
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