celestial sphere wikipedia - EAS
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See all on Wikipediahttps://en.wikipedia.org/wiki/Celestial_sphereIn astronomy and navigation, the celestial sphere is an abstract sphere that has an arbitrarily large radius and is concentric to Earth. All objects in the sky can be conceived as being projected upon the inner surface of the celestial sphere, which may be centered on Earth or the observer. If
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See moreBecause astronomical objects are at such remote distances, casual observation of the sky offers no information on their actual distances. All celestial objects seem equally far away, as if fixed onto the inside of a sphere
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See moreCelestial spheres (or celestial orbs) were envisioned to be perfect and divine entities initially from Greek astronomers such as Aristotle (384 B.C to 322 B.C). The Greek philosopher, Aristotle,
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See moreThe ancients assumed the literal truth of stars attached to a celestial sphere, revolving about the Earth in one day, and a fixed Earth. The Eudoxan planetary model, on which the
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See moreObservers on other worlds would, of course, see objects in that sky under much the same conditions – as if projected onto a dome. Coordinate
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These concepts are important for understanding celestial coordinate systems, frameworks for measuring the positions of objects in the sky. Certain reference lines and planes on Earth, when projected onto the celestial sphere, form the bases of the reference
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See moreA celestial sphere can also refer to a physical model of the celestial sphere or celestial globe. Such globes map the constellations on the
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See moreWikipedia text under CC-BY-SA license- https://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, transparent fifth element (quintessence), like jewels set i…
Wikipedia · Text under CC-BY-SA license- Estimated Reading Time: 9 mins
- https://simple.wikipedia.org/wiki/Celestial_sphere
A celestial sphere can also refer to a physical model of the celestial sphere or celestial globe. Such globes map the constellations on the outside of a sphere, resulting in a mirror image of the constellations as seen from Earth. The oldest surviving example of such an artefact is the globe of the Farnese Atlas sculpture, a 2nd-century copy of an older (Hellenistic period, ca. 120 BC) …
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- https://en.wikipedia.org/wiki/The_Celestial_Sphere
The Celestial Sphere. The Celestial Sphere is a large scale oratorio for chorus and orchestra by Charles Wuorinen, commissioned by Augustana College (Rock Island, Illinois) for the 100th anniversary of the Handel Oratorio Society, which gave the premiere performance on 25 April 1981 under the direction of Donald Morrison, conductor.
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- https://en.wikipedia.org/wiki/Dynamics_of_the_celestial_spheres
- Ancient, medieval and Renaissance astronomers and philosophers developed many different theories about the dynamics of the celestial spheres. They explained the motions of the various nested spheres in terms of the materials of which they were made, external movers such as celestial intelligences, and internal movers such as motive souls or impress...
- Estimated Reading Time: 9 mins
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