may 11, 310 BC - Aristarchus of Samos
Aristarchus of Samos (/ˌærəˈstɑːrkəs/; Greek: Ἀρίσταρχος ὁ Σάμιος, Aristarkhos ho Samios; c. 310 – c. 230 BC) was an ancient Greek astronomer and mathematician who presented the first known model that placed the Sun at the center of the known universe with the Earth revolving around it (see Solar system). He was influenced by Philolaus of Croton, but Aristarchus identified the "central fire" with the Sun, and he put the other planets in their correct order of distance around the Sun. Like Anaxagoras before him, he suspected that the stars were just other bodies like the Sun, albeit further away from Earth. He was also the first one to deduce the rotation of earth on its axis. His astronomical ideas were often rejected in favor of the incorrect geocentric theories of Aristotle and Ptolemy. Nicolaus Copernicus had attributed the heliocentric theory to Aristarchus.
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