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

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. A study published this month links an uptick in impact craters during the Ordovician Period,

From Grace Earth may have had its own ring system that formed around 466 million years ago, lasting for tens of millions of years. As detailed in a new study published in the journal Earth and Planetary Science Letters,