The End-Ordovician Extinction was the first of the so-called ‘Big Five’ mass extinctions in the history of life on Earth - more than 80% of species in the oceans died out. But could you ...

A study published this month links an uptick in impact craters during the Ordovician Period, an era before animals lived on land, to a ring made of asteroid debris that encircled our planet for ...

The researchers' idea that Earth once had rings comes from reconstructions of Earth's plate tectonics from the Ordovician period —which ran between 485.4 million years and 443.8 million years ...

And—according to a study recently published in the journal Earth and Planetary Science Letters —during an era known as the Ordovician period, it may have once had rings. Seriously.

Home > Science Astronomers: Earth Had Saturn-Like Rings 466 Million Years Ago The temporary ring system may explain some strange geological happenings during the Ordovician Period.

This period, which occurred near the end of the Ordovician, is recognized as one of the coldest in the last 500 million years of Earth's history. "The idea that a ring system could have influenced ...

A new study has proposed the hypothesis that 'Earth also had a ring during the Ordovician period , about 488.3 million to 443.7 million years ago.' ...