ExtonGuy t1_ixalanv wrote
Reply to comment by Ape_Togetha_Strong in What are sone discoveries about space made before the advances of science and technology? by Limp_Confidence_1725
Story is that precession was discovered by Hipparchus of Rhodes, c. 150 BC. He compared star maps from 150 years earlier, with his own observations. https://en.wikipedia.org/wiki/Hipparchus#Precession_of_the_equinoxes_(146%E2%80%93127_BC)
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