Earth's oceans are mysterious, largely unexplored places, but the enormous oceans of Neptune and Uranus have them beat.

Our Solar System, like a sneaky little hobbit, seems to have stuffed its pockets full of hidden oceans. Jupiter, Saturn, ...

A French astrophotographer recently snapped shots of the moon, Venus, Mars, Jupiter, Saturn, Uranus and Neptune in a single evening, and rearranged them to create a striking composite image.

Earth's Moon: NASA's Galileo spacecraft took this image of Earth's Moon on Dec. 7, 1992, on its way to explore the Jupiter system in 1995-97. The Moon is Earth's only natural satellite.

Five of the brightest planets will be visible to the naked eye. With help, you may even spot Uranus and Neptune.

February is one of the coldest and snowiest months across North America before the arrival of spring, and the wintry end to the season inspires the upcoming astronomical sight. The Snow Moon will ...