If you look up on a clear night, the brightest and largest object in the sky will probably be the moon. And unless you have a decent telescope, it is the only natural satellite you can see with your ...

The dwarf planet Pluto and its five known natural satellites (Charon, Styx, Nix, Kerberos, and Hydra) may be frigid, but ...

Io isn’t just another moon, it’s the most volcanically active body in the entire solar system. Orbiting Jupiter, Io is ...

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

A passing star may have kicked the weird moons of giant planets like Jupiter and Saturn into place, new research suggests. When you purchase through links on our site, we may earn an affiliate ...

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

Around 4 billion years ago, an asteroid hit the Jupiter moon Ganymede. Now, a researcher realized that the Solar System's biggest moon's axis has shifted as a result of the impact, which confirmed ...

Astronomers have discovered what they think may be another moon orbiting a distant dwarf planet called Quaoar. This small, ...

NASA’s Kepler observatory should be able to detect planetary moons – yet to be discovered – formed by far-away planetary collisions outside our Solar System, research by Amy Barr of the Planetary ...