During a tumultuous period for our planet around 466 million years ago, Earth was pelted with meteorites and rocked by ...
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 ...
Back when the Earth was crawling with trilobites and other strange shelled creatures, our planet may have had a ring just like Saturn's. This ancient ring system is thought to have formed ...