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Copernicus:
The Foundation
- Nicholas Copernicus (Polish, 1473-1543):
Proposed the first modern heliocentric model, motivated by inaccuracies
of the Ptolemaic model and based on aesthetic principles – only
indirectly on evidence.
- Features of the model: It was still
based on circles and epicycles, and was not more accurate than the
Ptolemaic model; However, it allowed the calculation of distances to
planets in AU, and provided the correct explanation for retrograde
motion.
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What happened:
Copernicus' model was not widely read or accepted right away, because it is difficult
to change established ideas (although it did spark debates, and eventually condemnation
by the Catholic church), because of its limitations, and because it did not address
some of the better arguments in favor of geocentric models.
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