Add Yahoo as a preferred source to see more of our stories on Google. an illustration of the planet saturn as seen from one of its many moons two other smaller moons are in the distance The moons were ...

The Mars Moons eXploration spacecraft will fire its thrusters to maneuver into orbit around Mars (depicted in this digital ...

Our moon is a particularly unusual example of moons when it comes to planetary bodies. Though many other planets in the solar system have moons, they are very different from our own. Most planets have ...

What is the difference between a moon and a planet? Trick question! According to scientific definitions, there often isn’t much of a difference at all. That might seem counterintuitive, but it’s true.

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. Why do some planets have moons and some don’t? – ...