The greatest inaccuracy in Copernicus's model of the solar system was that the planets
A)traveled in circular orbits with uniform motion.
B)traveled on epicycles whose centers followed orbits around the Sun.
C)traveled in elliptical orbits.
D)were allowed to travel backwards in their orbits.
E)orbited the Sun.

Question

Quizplus · Accepted Answer

Copernicus's model inaccurately depicted planets moving in circular orbits with uniform motion, whereas in reality, planets travel in elliptical orbits, as later described by Johannes Kepler.

The Greatest Inaccuracy in Copernicus's Model of the Solar System