Ptolemy's model for the solar system was
A) Sun-centered,with planets moving in circles around it.
B) Earth-centered,with the Sun,Moon,and planets moving in ellipses in the sky.
C) Sun-centered,with elliptical planetary orbits.
D) Earth-centered,with epicyclic planetary orbits.

Question

Quizplus · Accepted Answer

Ptolemy's model was Earth-centered, with the planets moving in epicyclic orbits. This means that each planet moved in a small circle (the epicycle) while also moving in a larger circle around the Earth (the deferent). This model was later replaced by the heliocentric model proposed by Copernicus, which placed the Sun at the center of the solar system.

Ptolemy's Model for the Solar System Was