Planets will sometimes follow a loop that takes the path of the planet a short distance backward from west to east across the sky relative to the stars. This movement is called _________ motion.
A)prograde
B)retrograde
C)ecliptic
D)orbital

Question

Quizplus · Accepted Answer

Retrograde motion is the motion of a planet as it appears to move in the opposite direction to the other celestial bodies in the sky. It is caused by the difference in orbital speeds and distances between Earth and the other planets.

Planets Will Sometimes Follow a Loop That Takes the Path