To reach that surprisingly conclusion, scientists studied the positions of 21 asteroid impact craters during the Ordovician period – the second of six periods in the ...

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

The Earth: a ringed planet, much like Saturn, surrounded by a hula hoop of asteroids. The summit of Mount Everest: a tropical ...

“Over millions of years, material from this ring gradually fell to Earth, creating the spike in meteorite impacts observed in ...

Tomkins and his colleagues were intrigued by a window of time in the Ordovician period (~485-443 million years ago ... Sadly, not much lived on the Earth's surface other than some of the earliest land ...

Researchers have proposed that Earth may have had a ring system 466 million years ago, during a period of intense meteorite ...

Earth may briefly have had a ring system similar to Saturn ’s over 450 million years ago during a period of unusually intense ...

The ring might have acted like a giant sunshade, causing a cooling effect that might have unleashed an ice age.

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 a giant ring of space rocks surrounding it, similar to those around Saturn, which could have led to ...

We measured the amount of land mass at latitudes higher than 30 degrees (ie ... This cooling event occurred during the late Ordovician period, around 445–443 million years ago, and is characterized by ...

A ring formed by asteroid debris likely adorned Earth during the Ordovician period, geology researchers have proposed.