Multiple Choice
In the geocentric model for the solar system developed by Ptolemy,to what does the word "epicycle" refer?
A) One complete cycle of planetary motions,after which the motions repeat themselves (almost) exactly
B) A small circle around which a planet moves while the center of this circle moves around Earth
C) The large circle (orbit) centered on Earth about which the center of a smaller circle moves while the planet itself is moving along the smaller circle
D) The length of time taken by a planet to go between two successive times when it is farthest from Earth
Correct Answer:

Verified
Correct Answer:
Verified
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