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  2. Eudoxus of Cnidus - Wikipedia

    en.wikipedia.org/wiki/Eudoxus_of_Cnidus

    Eudoxus, son of Aeschines, was born and died in Cnidus (also transliterated Knidos), a city on the southwest coast of Anatolia. [3] The years of Eudoxus' birth and death are not fully known but Diogenes Laërtius gave several biographical details, mentioned that Apollodorus said he reached his acme in the 103rd Olympiad (368– 365 BC), and claimed he died in his 53rd year.

  3. Concentric spheres - Wikipedia

    en.wikipedia.org/wiki/Concentric_spheres

    The cosmological model of concentric (or homocentric) spheres, developed by Eudoxus, Callippus, and Aristotle, employed celestial spheres all centered on the Earth. [1] [2] In this respect, it differed from the epicyclic and eccentric models with multiple centers, which were used by Ptolemy and other mathematical astronomers until the time of Copernicus.

  4. Callippus - Wikipedia

    en.wikipedia.org/wiki/Callippus

    Callippus was born at Cyzicus, and studied under Eudoxus of Cnidus at the Academy of Plato. He also worked with Aristotle at the Lyceum, which means that he was active in Athens prior to Aristotle's death in 322 BC. He observed the movements of the planets and attempted to use Eudoxus' scheme of connected spheres to account for their movements.

  5. Celestial spheres - Wikipedia

    en.wikipedia.org/wiki/Celestial_spheres

    The celestial spheres, or celestial orbs, were the fundamental entities of the cosmological models developed by Plato, Eudoxus, Aristotle, Ptolemy, Copernicus, and others. In these celestial models, the apparent motions of the fixed stars and planets are accounted for by treating them as embedded in rotating spheres made of an aetherial ...

  6. Eudoxus (lunar crater) - Wikipedia

    en.wikipedia.org/wiki/Eudoxus_(lunar_crater)

    Eudoxus is a prominent lunar impact crater that lies to the east of the northern tip of the Montes Caucasus range. It is named after the Greek astronomer Eudoxus of Cnidus . [ 1 ] It is located to the south of the prominent crater Aristoteles in the northern regions of the visible Moon .

  7. Paleontology in Indiana - Wikipedia

    en.wikipedia.org/wiki/Paleontology_in_Indiana

    The location of the state of Indiana. Paleontology in Indiana refers to paleontological research occurring within or conducted by people from the U.S. state of Indiana.Indiana's fossil record stretches back to the Precambrian, when the state was inhabited by microbes.

  8. Eudoxus of Cyzicus - Wikipedia

    en.wikipedia.org/wiki/Eudoxus_of_Cyzicus

    Ptolemy appointed Eudoxus of Cyzicus, who made two voyages from Egypt to India. The first, in 118 BC, was guided by the Indian sailor. After Eudoxus returned with a cargo of aromatics and precious stones a second voyage was undertaken in 116 BC. Eudoxus navigated the second voyage, sailing without a guide.

  9. Historical models of the Solar System - Wikipedia

    en.wikipedia.org/wiki/Historical_models_of_the...

    The ancient Hebrews, like all the ancient peoples of the Near East, believed the sky was a solid dome with the Sun, Moon, planets and stars embedded in it. [4] In biblical cosmology, the firmament is the vast solid dome created by God during his creation of the world to divide the primal sea into upper and lower portions so that the dry land could appear.