A weird number of craters are located close to the equator, and the odds that this is random are incredibly low, researchers say.

C ould Earth once have had a planetary ring like the ones around Saturn? Scientists from Monash University in Australia think so. In a recent paper they identify 450m-year-old craters that lie close to Earth’s historical equator.

Earth may have had a Saturn-like ring system long ago, created from the debris of a passing asteroid that our planet tore apart.