A very slow motion of Earth's axis that requires 26,000 years to complete is called ___________.
A) retrograde motion
B) axial precession
C) occultation
D) perturbation
E) Ptolemaic motion

Question

Quizplus · Accepted Answer

Axial precession refers to the very slow motion of Earth's axis that requires 26,000 years to complete. Retrograde motion refers to the apparent backward motion of planets in the sky, while occultation refers to the covering of one celestial body by another. Perturbation refers to the small changes in the orbit of a planet due to gravitational interactions with other celestial bodies. Ptolemaic motion refers to the geocentric model of the universe developed by the ancient Greek astronomer Ptolemy.

A Very Slow Motion of Earth's Axis That Requires 26,000