The leading explanation for all of these mysteries is known as the giant impact hypothesis. According to this story, when the ...

That rock has a name: Theia. This requires an explanation. You probably know about the asteroid that smashed into Earth about 66 million years ago at the end of the Cretaceous period, creating the ...

Something should have scattered the progenitor of the Athor family into the asteroid belt ... the collision between Earth and Theia that formed the moon occurred around this period of time.