Earth spins on an axis that is at an angle to axis of Earth orbit around Sun. Sun gravity causes torque on Earth axis and causes it to rotate {precession}| {precession of the equinoxes, Earth}, as angular velocity around axis interacts with angular velocity around orbit. Object spin and orbital motion interact to cause spin-axis precession.
Physical Sciences>Physics>Dynamics>Rotation>Orbit
5-Physics-Dynamics-Rotation-Orbit
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Date Modified: 2022.0224