Some of Earth's oldest rocks buried deep in Western Australia may hold new clues about the dramatic event that gave rise to ...

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

The Moon likely formed from a giant impact with a sister planet, influencing Earth’s seasons and habitability.

Roughly 4.3 billion years ago, a massive asteroid slammed into the far side of the moon, carving out the South Pole–Aitken ...

The moon was formed 4.5 billion years ago in a "giant impact" that left Earth with a two-hour day, according to new research. Scientists have long debated the circumstances which led to the formation ...

According to the latest mathematical models, the moon has a fluid outer core and a solid inner core, similar to Earth’s. The ...

The moon's orbit isn't a perfect circle. Instead, it's more stretched out, kind of like an oval, which means its distance from Earth varies by about 30,000 miles (48,000 km). The surface of the moon ...

About 3.8 billion years ago, two massive canyons likely formed on the moon in a span of less than 10 minutes, according to new research. The extraordinary formations, each comparable in size to ...