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Heliocentric model

(1,359 words)

Author(s): Beuttler, Ulrich
1. Concept The heliocentric model is based on two theories: (1) that the daily rotation of the heavens is only apparent, and is in fact produced by the rotation of the Earth, and (2) that the Earth is only one of the planets, and is orbiting the Sun like the others. Introduced in modern times by Nicolaus Copernicus in 1543 [1], the heliocentric model gradually prevailed through the work of Johannes Kepler [8], Galileo Galilei [4], Isaac Newton [10] and Pierre-Simon de Laplace (1796) [9] against the geocentric model. The conditions for this came about in the epochal s…
Date: 2019-03-20

Geocentric model

(1,552 words)

Author(s): Beuttler, Ulrich
1. Introduction The replacement of the geocentric with the heliocentric model was not a “Scientific Revolution” (Kant), but a slow and hesitant process of alteration and assimilation that began with Nicolaus Copernicus [7]; [20] and continued with Isaac Newton and Pierre-Simon de Laplace (cf. Copernican Revolution). By 1600, there were a handful of Copernicans (Rheticus, Michael Maestlin, Johannes Kepler, Galileo). By the end of the 17th century the geocentric model was being discussed as equally astronomically valid. Only …
Date: 2019-03-20