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In the case of Ptolemy's geocentric model and Copernicus's heliocentric model, the characteristic that is the same for both models is:
- The Sun is located at the center.
Both Ptolemy's geocentric model and Copernicus's heliocentric model placed the Sun at the center of their respective systems. Despite their differing views on the movement of celestial bodies around the Sun, both models positioned the Sun as a central element in their explanations of the solar system. This shared characteristic highlights the historical development of astronomical understanding and the transition from Earth-centered to Sun-centered models of the solar system.
