To our best of our understanding, the Moon formed from Earth following a colossal impact. A Mars-sized world we nicknamed Theia slammed and merged with the primordial Earth, throwing material into ...

We already know a decent amount about how planets form, but moon formation is another process entirely, and one we're not as familiar with. Scientists think they understand how the most important moon ...

The conventional explanation for the moon's formation is that an enormous rock smashed into the nascent Earth and created it as a result. A new theory challenges the particulars of how events may have ...