Researchers have found evidence suggesting that our planet may have once had a ring system around 466 million years ago.

In a discovery that challenges our understanding of Earth's ancient history, researchers have found evidence suggesting that ...

I f astronomers had been walking the Earth 466 million years ago, they may have had something special to see. The moon and ...

Learn more about the time period that took place 488 to 443 million years ago. 3 min read During the Ordovician period, part of the Paleozoic era, a rich variety of marine life flourished in the ...

ISTOCK / GETTY IMAGES PLUS 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 ...

But first there was a period of biological regrouping following the disastrous climax to the Ordovician. The recovery soon got under way in the oceans as climbing temperatures and rising sea ...

One question that often comes up: If you’ve had sex during your period, can you get pregnant? The menstrual cycle is the monthly process by which the body prepares for the possibility of pregnancy.

The earliest fossil evidence for sharks or their ancestors are a few scales dating to 450 million years ago, during the Late Ordovician Period. Emma Bernard, a curator of fossil fish at the Museum, ...

A new study from Monash University scientists suggests that Earth may have had a ring system that formed around 466 million ...

Earth may have had rings. At least that's what a new study published this month claims. Here's what we know so far.

This surprising hypothesis, published in Earth and Planetary Science Letters, stems from plate tectonic reconstructions for the Ordovician period noting the positions of 21 asteroid impact craters.

A ring of asteroid debris could have orbited Earth for tens of millions of years, and perhaps even have altered the planet's climate ...