The MOST readily observed east-to-west motion of objects in the night sky is caused by the
A) relative motions of stars with respect to each other in the sky.
B) rotation of Earth on its axis.
C) rotation of the whole universe around a fixed axis near the Great Attractor.
D) revolution of Earth in its orbit around the Sun.

Question

Quizplus · Accepted Answer

The east-to-west motion of objects in the night sky is primarily due to the rotation of Earth on its axis. This rotation makes it appear as though the stars and other celestial objects are moving from east to west over the course of the night.

The MOST Readily Observed East-To-West Motion of Objects in the Night