While life on Mars (and Venus) has long been an obsession for those wondering if we're alone, there are other places in our ...

Moon impact 3.5 billion years ago reveals hidden Solar System history through tiny mineral grains. The discovery shows ...

Earth and the Moon both record evidence of a 'lost' period of bombardment. (NASA) Tiny crystal grains trapped inside a ...

The outer solar system once seemed like a quiet backwater. But a glut of tiny, strange moons with unruly orbits are coming ...

Facts about Jupiter's moon Callisto, the third largest moon in the Solar System and the most heavily-cratered object.

On a clear night, it dominates the sky, bright enough to cast shadows and large enough for dark patches and surface features ...

Jupiter's giant moon Ganymede is the only known moon to have its own magnetic field — and it may be heating up in a process "not yet observed anywhere else," new research suggests. This standout ...

Neptune is definitely the odd one out of the gas giants. It's tilted at a strange angle, and its moons are completely ...

(Ianm35/iStock/Getty Images Plus) The Solar System is one of the comforting constants of human existence. No matter what else ...

In this quiz, you'll test your cosmic knowledge by matching each moon to the planet it calls home. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works ...

Jupiter has 79 moons and is known as the 'king of the planets'. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Jupiter is the largest planet in ...