The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many ...

The Solar System has a total of 419 known moons around planets. If we count dwarf planets, asteroids, and other worlds, the ...

Pluto's largest moon, Charon. (Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute) Labroots recently explored Saturn’s sponge-like moon, Hyperion, with its ...

Pluto’s largest moon, Charon, is so large relative to Pluto that the two orbit a mutual point in space. Eris’s sole known moon, Dysnomia, doesn’t quite compare size-wise.

A giant asteroid colliding with a distant world. Scientists believe that such a collision occurred with Jupiter's moon Ganymede 4 billion years ago. johan63/Getty Through his research, published ...

75 Years Ago, a Renowned Astronomer Discovered the Weirdest Moon in the Solar System The high cliffs of Miranda barely scratch the surface of why Uranus' moon is so unique.