What aspect of Ptolemy's method did the Copernican system dramatically simplify?

Answer

Removing the necessity for complex epicycles.

The Copernican system provided a simpler mathematical model by placing the Sun at the center, which eliminated the need for the complex epicycles required in Ptolemy's Earth-centered model to explain retrograde motion.

What aspect of Ptolemy's method did the Copernican system dramatically simplify?

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Models of the Universe [Geocentric to Heliocentric] - YouTube

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