We used to think moons were the boring sidekicks of the solar system. For decades, we treated them like cosmic leftovers — cold, dead rocks that did nothing but tag along with their parent planets. We ...

Moons may seem like quiet companions to the planets, but many of them are worlds every bit as fascinating as the planets themselves. Some are covered in oceans, some erupt with lava, and others hide ...

This year, astronomers discovered more than 100 previously unknown moons in our own solar system. There may be many more yet to be discovered, and cataloguing them could help us better understand how ...

Far from the Sun’s heat, orbiting the outer planets of the solar system, are moons with oceans of liquid water beneath their frozen surfaces. Keith Cooper finds out how planetary scientists are ...

"Life could go on as usual." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Small icy moons in the outer reaches of our solar system may hide ...

The outer planets of the solar system are swarmed by ice-wrapped moons. Some of these, such as Saturn's moon Enceladus, are known to have oceans of liquid water between the ice shell and the rocky ...

Ganymede is the largest moon in the Solar System at 5,268 kilometers, and is bigger than Mercury. New research suggests that ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...