Noun
an ancient Greek astronomer who was one of the first to propose a heliocentric theory of the universe (circa 270 BC)
Source: WordNetIn the 3rd century BC Aristarchus of Samos was the first to suggest a heliocentric system, although only fragmentary descriptions of his idea survive. Source: Internet
Astronomy main Aristarchus of Samos published work on how to determine the sizes and distances of the Sun and the Moon, and Eratosthenes used this work to figure the size of the Earth. Source: Internet
Aristarchus of Samos in the third century BC said, "The fixed stars and the sun remain unmoved, and the earth revolves about the sun on the circumference of a circle, the sun lying in the middle of the orbit." Source: Internet
Octahedral shape of a diamond The astronomer Aristarchus of Samos was the first known person to propose a heliocentric model of the solar system, while the geographer Eratosthenes accurately calculated the circumference of the Earth. Source: Internet
The Greek astronomer Aristarchus of Samos (c.310 – c.230 BCE) had suggested that the Earth revolves around the Sun, but Copernicus' theory was the first to be accepted as a valid scientific possibility. Source: Internet