Our former "ninth planet," Pluto, is actually a dwarf planet. Learn more!

Sure, everyone knows what a Full Moon is, but do you know what a Waxing Gibbous or a Waning Crescent are? Find out!

Uranus may not be as big as Jupiter or as impressively arrayed as Saturn, but look a little closer and you'll find that there's more to "Bullseye Planet" than meets the eye.

If you enjoy finding out the names of the various objects in the night sky, perhaps you've stumbled across one or more of the "Messier Objects." Find out more!

Though remote from the Earth, Saturn's unique ring system makes it possibly the most instantly recognized planet in our Solar System. Learn more about "the ringed planet."

Mars has been in the news recently thanks to Elon Musk. While it's not our nearest neighbor or the brightest planet, it is perhaps the one that most inspires our imagination. Check out these 10 fascinating facts about the fourth planet from the Sun.

10 fascinating facts about the first planet in our Solar System.

Though not the most well known constellation in the night sky, Hydra, the sea serpent, is the longest of the 88 officially recognized modern constellations.