Mathematicians calculated where the planet might be based on its effects on Uranus, and astronomers searched for less than an ...

In this quiz, you'll test your knowledge of Neptune's features, moons, and the science that keeps astronomers fascinated.

The half-lit lunar disk will rise alongside the ringed giant Saturn and dimmer Neptune in the early morning hours of June 19, putting on a spectacular show just six hours after the moon hits its third ...

Named after the Roman god of the sea, Neptune is a world of powerful storms, deep mysteries, and breathtaking beauty. Neptune may be distant, but it’s anything but quiet. With the fastest winds in the ...