Setem memperingati Aristarchus of Samos keluaran Greece pada tahun (?). Beliau lahir pada 310BC dan meninggal dunia 230BC.
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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 ... the system known now as heliocentric (as opposed to geocentric)
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Aristarchus of Samos (3rd century BC) considered the sizes and distances of the sun and the moon, and was the first to try to calculate the distances of these bodies geometrically . Furthermore, he advanced the theory that the sun was at rest at the center of the sphere of fixed stars, and that the earth and planets revolved around the sun. The apparent motion of the stars was due to the daily rotation of the earth. Copernicus was familiar with Aristarchus' theory of the universe, which at the time, however, did not find favor with the ancient philosophers.
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beliau memperkenal 'aristarchus system' - calculation of distances of our solar system (Sun - Earth - Moon).
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