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Aristarchus of Samos

311 BC - 230 BC

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Aristarchus of Samos (; Greek: Ἀρίσταρχος ὁ Σάμιος, Aristarkhos ho Samios; c. 310 – c. 230 BCE) was an ancient Greek astronomer and mathematician who presented the first known heliocentric model that placed the Sun at the center of the known universe, with the Earth revolving around the Sun once a year and rotating about its axis once a day. He was a student of Strato of Lampsacus, who was the third head of the Peripatetic School in Greece. According to Ptolemy, during Aristarchus' time there, he observed the summer solstice of 280 BCE. Along with his contributions to the heliocentric model, as reported by Vitruvius, he created two separate sundials: one that is a flat disc; and one hemispherical.Aristarchus was influenced by the concept presented by Philolaus of Croton (c. Read more on Wikipedia

Since 2007, the English Wikipedia page of Aristarchus of Samos has received more than 1,178,391 page views. His biography is available in 64 different languages on Wikipedia. Aristarchus of Samos is the 9th most popular astronomer, the 41st most popular biography from Greece (down from 34th in 2019) and the most popular Greek Astronomer.

Aristarchus of Samos is most famous for his heliocentric theory, which states that the Earth revolves around the sun.

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  • 64

    Languages Editions (L)

  • 11.21

    Effective Languages (L*)

  • 3.04

    Coefficient of Variation (CV)

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Among astronomers, Aristarchus of Samos ranks 9 out of 531Before him are Johannes Kepler, Ptolemy, Giordano Bruno, Tycho Brahe, Anders Celsius, and William Herschel. After him are Edwin Hubble, Ulugh Beg, Hipparchus, Ole Rømer, Ja'far al-Sadiq, and Carl Sagan.

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Among people born in 311 BC, Aristarchus of Samos ranks 1 Among people deceased in 230 BC, Aristarchus of Samos ranks 1After him are Timon of Phlius, Diodotus I, and Agron.

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In Greece

Among people born in Greece, Aristarchus of Samos ranks 41 out of 936Before him are Gorgias (-483), Ptolemy I Soter (-367), Pyrrhus of Epirus (-318), Solon (-638), Myron (-500), and Polybius (-208). After him are Muhammad Ali of Egypt (1769), Leucippus (-500), Alcibiades (-450), Peisistratos (-600), Draco (-650), and Pindar (-517).


Among astronomers born in Greece, Aristarchus of Samos ranks 1After him are Oenopides (-490) and Vicky Kalogera (1975).