The leading explanation for all of these mysteries is known as the giant impact hypothesis. According to this story, when the ...

Out past Neptune are countless small icy and rocky bodies called Trans-Neptunian Objects (TNOs), and many of these have moons ...

Deimos is the smaller and less photographed of Mars’ moons. This egg-shaped object, only measuring about 7.7 miles in diameter (12.4 kilometers), is tidally-locked with the Red Planet making it often ...

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. Two of Uranus’ moons may be home to active oceans hidden beneath their surfaces.

Saturn surpasses Jupiter with 128 newly discovered moons, becoming the planet with the most moons in our solar system.

Not that it was a competition, but Saturn surpassed Jupiter in known moons a few years ago. Now the giant planet may never ...