Billions of years ago, so the theory goes, something around the size of Mars smacked into Earth, spewing a whole bunch of dirt into space that eventually coalesced to form the Moon. This is called ...

Serial magmatism was initially proposed as a possible mechanism for the formation of lunar anorthosites, but the slushy model ultimately reconciles this idea with that of a global lunar magma ocean.

Model after model There have been many models of the giant collision between the early Earth and Theia—it's how we know it could have pushed enough material into orbit to form the Moon.

The moon may be more than 100 million years older than some scientists previously thought, according to a new study.

This simulation also implies that the Moon formed near the very end of Earth’s formation. “The model we propose is the least restrictive impact scenario, since it ...

Models of moon formation suggest the last remains of this giant lunar ocean crystallized into dense materials including ilmenite, a mineral rich in iron and titanium.

The moon may be older than some scientists thought, according to a new study. It suggests that rock samples from the Apollo missions date back to a melting event, not to the moon's formation.