According to the cosmology of many ancient civilizations, life on earth goes through cycles of destruction and rebirth. One of these cycles called the precession of the equinoxes occurs approximately every 25,920 years. Cultures like the ancient Greeks and Hindus describe how humanity goes through descending and ascending levels of spiritual enlightenment within this cycle. The Mayas and Aztecs also describe similar smaller cycles inside the larger cycle called the precession of the equinoxes. In Meso America these cultures referred to each of the five cycles as a sun. Each sun cycle is measured by the Maya long count calendar and spans a total of 5125 years. The Maya describe how we are currently living in the 5th sun, which began in 3114 BC and ends in 2012. According to their tradition every time a cycle ends, cataclysms occur that clear the earth for the arrival of the next humanity. Per the Maya we are currently living in the last sun or stage of the large precessional cycle. Five cycles adds up to 25,625 years which is very close to the great cycle of 25,920 years.
During the reign of the 1st sun the earth was inhabited by a race of giant humans. The memory of this race is preserved in the many myths of giants from around the world. Many of these myths describe how many of the megalithic monuments of the ancient past were build by this race of giants. Incredibly the remains of this race of giants have been found throughout the world. The end of this sun occurred around 18,000 B.C. An international team of investigators under the leadership of two researchers from the UAB demonstrated in 2010 that the Atlantic ocean circulation has change in the past. They date the day of this event to around 20,000 years ago at the height of the last ice age. This event matches the end of the first sun, and would have changed the climate of the world drastically as the circulation of ocean water is what determines the climate flow.
The humans of the second sun were smaller in size and met their end around 12500 B.C. This date matches the begging of abrupt end of the last ice age and the Pleistocene extinction. This extinction saw the end of hundreds of animal world wide and was accompanied by many natural disasters. Author and Researcher Graham Hancock has discovered ancient alignments between the monuments of Angkor Wat, the Giza complex and the night sky. Along with other authors he points out that the monuments at these sites are built to resemble the arrangement of starts and constellations seen in the night sky in 10,500 B.C. These findings provide evidence that civilization goes back further than is currently accepted.
The end of the third sun accrued around 8000 B.C. at the end of the last ice age. After this event we see an advancement in human development with the beginnings of farming. The new warmer climate allowed for the humans in the 4th sun to spread around the globe and repopulate. Lonnie Thompson, a professor of geological sciences at Ohio State and a researcher with the Byrd Polar Research Center. He points to markers in numerous records suggesting that the climate was altered suddenly some 5,200 years ago with severe impacts. His research matches the date for the destruction of the 4th sun according to Maya Cosmology. Interestingly enough we have few records of anything prior to this date. Modern science agrees that the dawn of civilization began with the emergence of the Sumerian culture. Their appearance dates back to around 3000 B.C. which corresponds to the beginning of the 5th sun for the Maya.
The 5th Sun began on 3114 B.C. and will come to an end on December 21, 2012. This cycle marks the end of the precession of the equinoxes and the rebirth of life in planet earth.