Symmes’s Theory of Concentric Spheres
Stuff You Missed in History Class - A podcast by iHeartPodcasts
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In 1818, something about the rings of Saturn - we don't know what, exactly - led John Cleves Symmes to conclude that the Earth was hollow. And he spent the rest of his life promoting this strange idea. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers
