The eccentric axis of rotation creates a seemingly unpredictable path of motion. (vernissage.tv)
The precession of the equinoxes refers to the precession of Earth's axis of rotation with respect to inertial space. (sciencedaily.com)
Because Earth's axis of rotation points very close to Polaris, all other stars in the Northern Hemisphere appear to revolve around it. (sciencemag.org)