For about 4.5 billion years, our planet has circled the sun on a stable, rhythmic path. Each of Earth's orbits takes ...

New research challenges what we know of our planet’s ancient past, suggesting that a ring formed around the Earth around 466 ...

Minuscule meteoroids slamming into the lunar surface could be kicking up most of the atoms that make up the lunar exosphere.

A new study from Monash University scientists suggests that Earth may have had a ring system that formed around 466 million ...

Until scientists learn more then, here are seven of the most fascinating discoveries they’ve made about Saturn so far. The ...