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...erse, to the heliocentric model with the Sun at the center of the '''Solar System'''. Beginning with the publication of [https://en.wikipedia.org/wiki/De_rev ...ium'' proposed a heliocentric system versus the widely accepted geocentric system of that time. [https://en.wikipedia.org/wiki/Tycho_Brahe Tycho Brahe] accep

*3. Astronomy. A libration of the eighth (or ninth) [[sphere]], added to the system of [https://en.wikipedia.org/wiki/Ptolemy Ptolemy] by the Arab astronomer [ ...h) sphere of the [https://en.wikipedia.org/wiki/Ptolemaic_system Ptolemaic system]. "Thabit's" trepidation model was used in the [https://en.wikipedia.org/wi

...y [[Johannes Kepler]] and [[Galileo Galilei]] proposed a [[heliocentric]] system in the [[16th century]]. This is known as one of the most famous examples o ...Shapley championed the model of a cosmos made up of the [[Milky Way]] star system only. [[Heber D. Curtis]], on the other hand, suggested spiral nebulae were

...he [[Ptolemaic system]] into his own model of the universe, the [[Tychonic system]]. From [[1600]] until his death in [[1601]], he was assisted by [[Johannes ...ith enough accuracy so as to determine whether the Ptolemaic or Copernican system was more valid in describing the heavens.

...detailed comparison of the Ptolemaic and Copernican models of the solar [[system]], maintains that "Nature does not multiply things unnecessarily; that she *[https://www-db.stanford.edu/IMAGE/ Stanford SIMPLIcity image retrieval system, 1999.]

...ngs: generally, the astronomical observations simply did not square with a system controlled only by gravitational forces. Such observations have resulted in ...ant objects would rotate at a slower pace. Since this is true of our solar system, it should be no different for any galaxy. [[See Illustration 7]] (Newton's

...Syria] and [https://en.wikipedia.org/wiki/Ancient_egypt#Ptolemaic_Dynasty Ptolemaic Egypt] against each other necessitated fostering [[Palestine]] as a separat ...morality]], [[ideals]] never since [[transcended]] by any purely [[human]] system of [[philosophy]]. While the Stoics professed to be the "offspring of [[God

'''Magic''', sometimes known as '''sorcery''', is a [[concept]]ual system that asserts human ability to control or predict the [[nature|natural world ...ms as the substitution of chemistry for alchemy, the dethronement of the [[Ptolemaic theory]] of the [[universe]] assumed by [[astrology]], the development of t