Take a Number: Every 202,500 Years, Earth Wanders in a New Direction

[ahlam1399]

The planet?s orbit alternates from elliptical to almost perfectly circular ? and has for hundreds of millions of years.

أكثر... (https://www.nytimes.com/2018/05/21/science/earth-orbit-change.html?partner=rss&emc=rss)