This event, dating back 466 million years, coincides with the Ordovician impact spike, a time of unusually intense meteorite ...

If you were to look up from Earth some 466 million years ago, you might have seen a gleaming ring stretching across the sky, some scientists say.

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 ago ...

Earth may have had a ring made up of a broken asteroid over 400 million years ago, a study finds. The Saturn-like feature could explain a climate shift at the time.

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.

Earth may have had rings like Saturn many, many millenia ago. However, the formation didn’t last long, and it eventually collapsed, falling to the surface of our planet, leaving craters where ...

Saturn’s rings are iconic, but new evidence suggests Earth might once have sported one of its own. This ring would have caused chaos on the surface.

Earth may have had a ring made up of a broken asteroid over 400 million years ago, a study finds. The Saturn-like feature could explain a climate shift at the time.

Scientists studying the geology of the Ordovician Period about 466 million years ago report evidence that Earth's ring system created a telltale pattern of impact craters, and it may also explain ...

The temporary structure likely consisted of debris from a broken-up asteroid. Earth may have sported a Saturn-like ring system 466 million years ago, after it captured and wrecked a passing ...