(CNN) – The moon may be 100 million years older than planetary scientists thought. The moon has long been thought to have formed roughly 4.35 billion years ago after a Mars-sized object collided with ...

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

Over 4.6 billion years ago, Earth took shape from a spinning cloud of dust and gas surrounding the young sun. Tiny particles within this cloud collided and clumped together, driven by gravity and ...

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 ...

This composite image of Pluto, right, and Charon, its largest moon, showcases photos captured by NASA’s New Horizons spacecraft in July 2015. Credit: NASA / JHUAPL / SwRI Unlike how scientists believe ...

A physicist, a chemist, and a mathematician walk into a bar. It sounds like the start of a bad joke, but in my case, it was the start of an idea that could reshape how scientists think about the ...

(CNN) — 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 ...