: Like Anaxagoras before him, he suspected stars were other suns located at immense distances, explaining the lack of observable stellar parallax. Calculations vs. Reality
: He theorized that the Sun and fixed stars remained stationary while the Earth rotated on its axis daily and revolved around the Sun annually. aristarchus
Aristarchus of Samos (c. 310–230 BC) was a pioneering ancient Greek astronomer and mathematician who famously proposed the first known of the universe, placing the Sun at the center. Often called the "Copernicus of antiquity," his radical ideas were formulated nearly 1,800 years before the Copernican Revolution. Key Scientific Contributions : Like Anaxagoras before him, he suspected stars