12,000 BC Origins of the Yuga Cycles | Ancient History Goes Back Much Farther than Academics Thought

Yuga Definition originated from the observations of precession of Earth’s axis of rotation by ancient Indian astronomers. After many thousands of years (probably more than 13000 years) of observations , they concluded that the axial-projection point (projection of Earth’s axis upon the imaginary celestial sphere aka the sky) is moving round in a circle at the rate of 12 degrees (one Nakshatra) per 1000 years. They recognized that this knowledge can be used to record events separated by large amounts of time, of the order of thousands of years. These ancient astronomers considered 1000 years as a unit of time called Yuga. They used the ratio 1:1:1:1 to define a 4000 year long Chatur Yuga (four successive Yugas). Subsequently, they also used the ratio 4:3:2:1 to define a 10000 year long Chatur Yuga. This ratio probably came from the game of dice, which was one of the central theme of Mahabharata. The game of dice used the ratio 4:3:2:1 during successive throws of a dice. This 10000 Yuga definition was thus the