The Earth's rotational axis precesses in space and completes one revolution every
A) 200 years.
B) 1,800 years.
C) 26,000 years.
D) 51,000 years.

Question

Quizplus · Accepted Answer

This is known as the precession of the equinoxes and is caused by the gravitational pull of the Sun and Moon on the Earth's equatorial bulge. It takes approximately 26,000 years for the Earth's rotational axis to complete one revolution.

The Earth's Rotational Axis Precesses in Space and Completes One