If you observe carefully, everything in this Universe follows a path of helical motion.
Watch the following video, and ask yourself what force or energy drives all these helical motions in this 3-dimention space, from Galaxies to atoms?
Note: After watching these videos, you might wonder what is the true reason of the phenomenon of so called “Precession of The Equinoxes”.
The other consideration is whether the human civilization also experiences cycles. One thing I find strange is that our collective memory, as recorded in books, ancient scriptures, and other evidences, only goes back to about eight thousand years. What happened ten thousand years ago? or Fifteen thousand years ago? Were people then primitive, or were they more advanced than we are now? Who built the Giza Pyramids, which are not just three piles of heavy lime stones, but very precisely constructed masterful art work? Can we use modern technologies to build Giza Pyramids with the precision demonstrated in its architecture?
15-thousand-year cycle of human civilization
I consider the 2nd video an in-a-nut-shell proof of “15-thousand-year cycle of human civilization”.
It shows that the entire Solar system penetrates the galactic plane of Milkyway Galaxy once every 14 thousand years in a coiled motion. The force field gradients in the Galactic plane are uneven so that the Sun and the planets will experience changes as they travel along in the general Galactic Plane region. That is probably why our recorded history does not go back more than 15 thousands years.
Walter Russel and Nikola Tesla
In order to understand how the changes in force fields in the Galactic Plane affect the Sun the his planets, one must study Walter Russell and Nikola Tesla. Why did not we learn about Nikola Tesla and Walter Russell in our years of formal education? Why are their names and their discoveries hidden or obscured? Here is a discussion of the hidden knowledge of the our Universe which you will not be able to learn from an accredited college:
Interview about Walter Russell and Russellian Science