Eons ago, in the frigid depths of our solar system, a dramatic collision occurred between two icy worlds. Instead of a catastrophic smash-up, the two bodies "kissed," merging temporarily like a ...

A crucial difference in the “fingerprints” of Earth and the moon confirms an explosive, interconnected past Within the first 150 million years after our solar system formed, a giant body roughly the ...

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 ...

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 has long been the Earth's close companion, but researchers have struggled to understand exactly when the moon formed, because tiny crystals in the moon rocks brought home by astronauts ...

One bright day on Earth about 4.5 billion years ago, everything changed. A massive object slammed into the young planet. The impact was so large that bits were flung out into space, eventually ...

The research suggests that lunar rock samples from the Apollo missions date to an event that melted the moon's surface — not to the moment it formed. The authors therefore think the moon formed around ...