The Earth: a ringed planet, much like Saturn, surrounded by a hula hoop of asteroids. The summit of Mount Everest: a tropical ...
This era of intense bombardment, known as the Ordovician impact spike, may have resulted from meteorites falling from the ring rather than flying in from space, which would explain the strange ...
A ring could explain a mysterious arrangement of impact craters near the equator and might even have caused an ice age, ...
Researchers have proposed that Earth may have had a ring system 466 million years ago, during a period of intense meteorite ...
The hypothetical ring didn't last long, cosmically speaking – just a few tens of millions of years. But that was long enough ...
New research challenges what we know of our planet’s ancient past, suggesting that a ring formed around the Earth around 466 ...