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 the ...

It's largely agreed that the moon was created around 4.5 billion years ago when a protoplanet collided with early molten ...

Over 4.6 billion years ago, the early Earth emerged from a swirling disk of gas and dust encircling the young sun. This ...

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 moon may be more than 100 million years older than some scientists previously thought, according to a new study. The research, published Wednesday in the journal Nature, challenges the ...

How did the Moon form? It’s a question which has perplexed astronomers for centuries. Now, a team of researchers in America have a new theory with a couple of key twists on the conventional ...

"For the first time, we have physical evidence showing us what was happening in the moon's interior during this critical stage of its evolution, and that's really exciting." When you purchase through ...

Schematic illustration with a gravity gradient map (blue hexagonal pattern) of the lunar nearside and a cross-section showing two ilmenite-bearing cumulate downwellings from lunar mantle overturn.

That timeline is based on analyses of lunar rock samples from NASA’s Apollo missions. But the new study suggests that the moon formed earlier — around 4.51 billion years ago — and then experienced a ...