It took two centuries for the Copernican model to replaced the Ptolemaic model because. Physics & Astronomy

there was no scientific evidence to support either model until Galileo made his observations
in Copernicus' time, there were no telescopes
the Copernican model required complicated new terms to explain it correctly
the Church wouldn't let anyone talk about Copernicus' model for 200 years
the Ptolemaic model was simpler and more aesthetically pleasing

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