Astrophysicists have been saying this for decades, and now geologists have proven it: Earth orbit has been going through 405,000 years, and has been for hundreds of millions of years. Now physical evidence of the cycle has been found through the analysis of ancient rocks in Arizona, New York and New Jersey, explain Dennis Kent and Paul Olsen of the Earth Institute of Columbia University in the Proceedings of the National Academy of Sciences.
Every 405,000 years, Earth's orbit around the Sun goes from nearly circular to about 5 percent elliptical and back.
Sorry, but our climate change problem is still our fault. He has absolutely nothing to do with this mega-cycle, which does not directly affect the Earth's climate, explains Olsen. However, it worsens shorter cycles that act directly.
This is also from Venus
The megacycle is mainly caused by the gravitational pull of other planets in the solar system.
Despite the graphics in children's books, the orbits of planets around the sun are not precise concentric circles.
Mars, for example, has a slightly eccentric orbit of 0.0934. The Earth is also eccentric, but at 0.0167 is much less than Mars.
According to this calculation of the eccentricity, the Earth's orbit is practically circular.
The planets do not move around the Sun at the same speed , either. The result of differences in their positions and eccentricities is that the influence of the planets on the trajectories of others is changing.