Copernicus' heliocentric model failed to work as well as it might fail to predict the positions of planets because Copernicus insisted the orbits were

Question

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Copernicus insisted that the orbits of planets were circular, which was incorrect. The actual orbits are elliptical, as later discovered by Kepler, which is why the heliocentric model initially failed to accurately predict planetary positions.

Copernicus' Heliocentric Model Failed to Work as Well as It