A ring could explain a mysterious arrangement of impact craters near the equator and might even have caused an ice age, ...
In a discovery that challenges our understanding of Earth's ancient history, researchers have found evidence suggesting that ...
During the time 485 to 443 million years ago, known as the Ordovician period, Earth was already in the throes of a serious ...
Saturn’s rings are iconic, but new evidence suggests Earth might once have sported one of its own. This ring would have ...