

Fran Arnet
May 31, 2021


Fran Arnet
May 22, 2021
Earth polar axis is "tilted" and that also moves within an approximately 40'000 year cycle. The Orbit isn't exactly circular and therefore there's also cycles involved of 1) of 101'000 years and 2) of 405'000 years.
There's also the change of Ages - we're currently in the Age of Pisces - and this cycle is called the precession of the Equinoxes and takes roughly 25'770 to 25'920 years.
More about these cycles called "Milankovitch cycles" on the Earth-page: