What is the cause for the slow movement of reference marks, such as the celestial poles and equator, to move across the sky?
A) precession
B) evolution
C) climate change
D) continental drift
E) angular revolution

Question

Quizplus · Accepted Answer

Precession is the cause for the slow movement of reference marks, such as the celestial poles and equator, across the sky. It is a gradual wobble in the Earth's rotation axis, which causes the positions of the celestial poles and equator to slowly shift over time.

What Is the Cause for the Slow Movement of Reference