Which of the following does NOT correctly characterize a planet's motion on the sky?
A) Planets vary in brightness over the course of a year.
B) Planets remain near the ecliptic.
C) Planets occasionally move west to east across the sky during a single night.
D) Planets change their locations relative to the background stars from night to night.

Question

Quizplus · Accepted Answer

Planets do not move west to east across the sky during a single night as this would violate the laws of physics. Rather, they move from east to west along with the stars due to Earth's rotation.

Which of the Following Does NOT Correctly Characterize a Planet's