Aristarchus of Samos

Aristarchus of Samos [ar΄is tär′kəs]
fl. 3d cent. B.C.; Gr. astronomer

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born с 310 BC
died с 230 BC

Greek astronomer.

His advanced ideas on the movement of the Earth (which he asserted revolved around the Sun) are known from Archimedes and Plutarch. His only surviving work is the short treatise "On the Sizes and Distances of the Sun and Moon"; though the values he obtained are inaccurate, he showed that the Sun and stars are at immense distances. A peak in the centre of a lunar crater named for him is the brightest formation on the Moon.

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▪ Greek astronomer
      (c. 310–230 BC), Greek astronomer, first to maintain that the Earth rotates and revolves around the Sun. On this ground, Cleanthes the Stoic declared that he ought to be indicted for impiety.

      Aristarchus' advanced ideas on the movement of the Earth are known from Archimedes and Plutarch; his only extant work is a short treatise, “On the Sizes and Distances of the Sun and Moon.” The values he obtained, by using geometry, are inaccurate, because of faulty observations.

      Aristarchus found a more precise value for the length of the solar year. A lunar crater is named for him; a peak in its centre is the brightest formation on the Moon.

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Universalium. 2010.

Look at other dictionaries:

  • Aristarchus of Samos — Aristarchus, or more correctly Aristarchos (Greek: Ἀρίσταρχος, Arístarchos; 310 BC – ca. 230 BC), was a Greek astronomer and mathematician, born on the island of Samos, in Greece. He presented the first known heliocentric model of the solar… …   Wikipedia

  • Aristarchus of Samos — [ar΄is tär′kəs] fl. 3d cent. B.C.; Gr. astronomer …   English World dictionary

  • Aristarchus of Samos — (c. 320 bc– c. 250 bc) Greek astronomer Little is known of the life of Aristarchus, but Archimedes reported that Aristarchus had proposed that, while the Sun and the fixed stars are motionless, the Earth moves around the Sun on the circumference… …   Scientists

  • Aristarchus of Samos — biographical name circa 310 230 B.C. Greek astronomer …   New Collegiate Dictionary

  • Aristarchus of Samos — /ˈseɪmɒs/ (say saymos) noun c. 310–230 BC, Greek astronomer and mathematician; exponent of the theory of a sun centred universe …   Australian English dictionary

  • Aristarchus of Samos — noun an ancient Greek astronomer who was one of the first to propose a heliocentric theory of the universe (circa 270 BC) • Instance Hypernyms: ↑astronomer, ↑uranologist, ↑stargazer …   Useful english dictionary

  • Aristarchus On the Sizes and Distances — Aristarchus s 3rd century BC calculations on the relative sizes of, from left, the Sun, Earth and Moon, from a 10th century CE Greek copy On the Sizes and Distances (of the Sun and Moon) (Περὶ μεγεθῶν καὶ ἀποστημάτων [ἡλίου καὶ σελήνης]) is… …   Wikipedia

  • Aristarchus — may refer to: * Aristarchus (crater), on the moon * Aristarchus of Samos (circa 310 230 BC), Greek astronomer and mathematician * Aristarchus of Samothrace (circa 220 143 BC), Greek grammarian * Aristarchus of Tegea (5th century BC), Greek writer …   Wikipedia

  • Aristarchus [1] — Aristarchus, von Samos, berühmter Astronom, der die Umdrehung der Erde um die eigene Axe und die Jahresbewegung um die Sonne lehrte, lebte in der 2. Hälfte des 3. Jahrh. v. Chr. Von seinen Schriften ist nur die kleine übrig: »Von der Größe und… …   Herders Conversations-Lexikon

  • Aristarchus (crater) — lunar crater data caption=Aristarchus (center) and Herodotus (right) from Apollo 15. NASA photo . latitude=23.7 N or S=N longitude=47.4 E or W=W diameter=40 km depth=3.7 km colong=48 eponym=Aristarchus of SamosAristarchus is a prominent lunar… …   Wikipedia

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