Astronomical Cycles and Earth's Climate: Understanding the Aquarius Era and Equinox Precession

Secondary astronomical cycles with significant climate impacts derived from the interaction of the Earth-Sun system with other celestial bodies. Of particular importance is the cycle of Earth's axial inclination which, stabilized by the Moon, varies from $22°20'$ to $24°30'$ with a period of 41,040 years.

Solar activity cycles: the solar magnetic activity cycle is of fundamental importance for life on Earth since the heliosphere protects Earth from extraterrestrial influences and cosmic rays. An almost periodic change in solar activity occurs every 11 years and is related to the number of sunspots on the solar surface. Alongside this cycle there are others of secondary importance, the most relevant of which has a period of 2,400 years.

Aperiodic cycles of Earth's magnetic field: the thermal gradient between the solid core and liquid core of Earth generates, through powerful convective motions, a strong magnetic field that protects Earth from cosmic rays and solar wind. Since Earth's magnetic field is governed by turbulent motion inside the Earth, its orientation is not fixed but reverses aperiodically. The last important event in chronological order is the so-called Laschamps event consisting of a very brief pole reversal of 700 years that occurred 42,000 years ago coinciding with a maximum of solar activity.

To these classical cycles must be added all those sporadic events such as, for example, the Carrington event, or adjustments of the Earth's crust, or impact with meteoritic objects which, while not being periodic, can have a value of discontinuity and conclusion of a cycle. For the time interval we analyze, the Platonic year of 26,000 years and stellar action modulated by the precession of equinoxes and the corresponding cycle of zodiacal eras will be of maximum importance.

The Age of Aquarius and Clarifications on the Precession of Equinoxes

It is said that we are in the Age of Aquarius to which considerable importance is attributed for its presumed influence on humanity's destiny. The news cannot surprise us if we reflect that the biological, mental, emotional and spiritual development of individuals, both singly and taken as collectivity, is influenced by supernatural forces and by the natural astronomical forces of our Solar and Galactic System.

Even socio-economic facts and the extrasensory faculties of mystics and Initiates do not escape the laws of the Cosmos, so human freedom is conditioned by the Whole. Therefore among the cosmic causes influencing the evolution of peoples, the Zodiac of Constellations and the vibrational and rational one of Signs stand in the foreground.

When discussing Zodiacal Eras of Pisces or Aquarius, or any other sector of the Zodiac, reference is made to the astronomical phenomenon of the Precession of Equinoxes. These are nothing other than two intersection points between the celestial Equator and the Ecliptic, due to an inclination of $23°27'$ of the terrestrial axis or equatorial axis.

There are two equinoxes, the vernal or spring equinox, and the autumnal one. They are crossed by the Sun on March 21st (vernal E.) and September 23rd (autumnal E.): solar crossing due to the perspective of spherical geometry motivated by Earth's motion. The phenomenon of Precession was already known in 150 BC to Hipparchus, one of the most famous and great astronomers of antiquity, who noticed the change in celestial longitudes.