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The phenomenon known as precession is due to a regular, periodic variation in what property of Earth's motion

User BeesQ
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Answer:

The answer is... "the direction in which its rotational axis points"

Step-by-step explanation:

This regular, periodic wobble is introduced by the competing gravitational tugs between Earth, the Moon, and the Sun.

It is the direction of the tilt that changes, so the North Star (i.e., the star closest to the north celestial pole) changes in a regular, predictable way with time.

Hope this helps!! ;)

User Nikhil Verma
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