Astronomy Magazine
On April 26, 1920, Harlow Shapley of Mount Wilson Observatory and Heber Curtis of Lick Observatory held a public debate at the Smithsonian Museum of Natural History. In two back-to-back 40-minute presentations, the pair offered their respective explanations of the size and nature of the Milky Way: Shapley was certain that the Milky Way was Continue reading "April 26, 1920: The Great Debate" The post April 26, 1920: The Great Debate appeared first on Astronomy Magazine .
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