Ancient Greek astronomy

Greek astronomy is astronomy written in the Greek language in classical antiquity. Greek astronomy is understood to include the Ancient Greek, Hellenistic, Greco-Roman, and Late Antiquity eras. It is not limited geographically to Greece or to ethnic Greeks, as the Greek language had become the language of scholarship throughout the Hellenistic world following the conquests of Alexander. This phase of Greek astronomy is also known as Hellenistic astronomy, while the pre-Hellenistic phase is known as Classical Greek astronomy. During the Hellenistic and Roman periods, much of the Greek and non-Greek astronomers working in the Greek tradition studied at the Museum and the Library of Alexandria in Ptolemaic Egypt.

The Antikythera Mechanism was an analog computer from 150–100 BC designed to calculate the positions of astronomical objects.

The development of astronomy by the Greek and notably Hellenistic astronomers is considered to be a major phase in the history of astronomy. Greek astronomy is characterized by seeking a geometrical model for celestial phenomena.[1] Most of the names of the stars, planets, and constellations of the northern hemisphere are inherited from the terminology of Greek astronomy,[2] which are however indeed transliterated from the empirical knowledge in Babylonian astronomy, characterized by its theoretical model formulation in terms of algebraic and numerical relations, and to a lesser extent from Egyptian astronomy. Later, the scientific work by astronomers and mathematicians of the arbo-moslem empire, of diverse backgrounds and religions (such as the Syriac Christians[citation needed]), to translate, comment and then correct Ptolemy's Almagest, influenced in their turn Indian and Western European astronomy.

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