presesjon
Presesjon is a phenomenon observed in rotating bodies, most notably in celestial mechanics. It refers to the slow, conical precession of the axis of rotation of a rotating body. Imagine a spinning top that is not perfectly upright; its axis of rotation slowly traces out a cone in space. This is the visual representation of presesjon.
In the context of Earth, the most familiar example, the axis of rotation slowly wobbles. This causes
The period of Earth's axial presesjon is approximately 26,000 years. This cycle has significant implications for