Recent scientific research has unearthed an intriguing proposition that Earth may have once been orbited by two moons instead ...

Pluto may have been demoted to non-planet status, but it still commands a court of five moons, as is fitting for the king of ...

The eight largest moons in our solar system are Ganymede, Titan, Callisto, Io, Earth's Moon, Europa, Triton, and Titania.

Phases of ice that exist naturally only on frozen moons could be detected using infrared spectroscopy, according to new ...

A team of astronomers announced Tuesday that a new satellite measuring roughly 90 football fields across was discovered ...

But it’s not just looks. Rocky composition, general size, orbital behaviors—a lot of those qualities can be the same on both ...

Travel through time to witness some of the most remarkable episodes in our solar system's history, uncovering its ancient ...