Precession of the Equinoxes - Nocturnus AD

Moving westward in the sky

Along the ecliptic plane, gravity induced axial change

Motion of the equinoxes

Relative to fixed stars, opposite of the sun

Gradual shift in polar motion, changes in the alignment

Wobbling rotation, equatorial bulge

Inertial space, planetary precession

Gravitational force, diurnal motion

Celestial poles, axial tilt

Changing of the polar positions

Over 26,000 years

It’s the precession of the equinoxes

Cycle of the seasons

Change over time

The Earth’s obliquity

Of the orbital plane

Circumpolar stars, celestial poles

Stationary points, the zenith angle

Astronomical horizon, vertical directions

Force of gravity, opposite of nadir

Precessional eras of constellations

Kochab and Pherkad, guardians of the poles