Kepler's model for the solar system has planets traveling on
A) noncircular elliptical orbits.
B) spiral orbits.
C) perfectly circular orbits.
D) epicycles.
E) straight lines through curved space.

Question

Quizplus · Accepted Answer

Kepler's model describes planets moving in elliptical orbits around the Sun, with the Sun at one of the foci of the ellipse, which is a departure from the earlier belief in perfectly circular orbits.

Kepler's Model for the Solar System Has Planets Traveling on