In astronomy, axial precession is a gravity-induced, slow, and continuous change in the orientation of an astronomical body's rotational axis. In the absence of precession, the astronomical body's orb
"Table indicating the longitude of three stars observed at different times." Compiled by Adriaan Metius, 1624.
An Age of Aquarius symbol: Leonardo da Vinci's Vitruvian Man. Da Vinci drew the original of this figure c. 1487. Chakras, or energy centers, have been superimposed digitally.