Neptune is called an “ice giant” because it’s mostly made of a thick, slushy mix of water, methane, and ammonia, which ...

An oddly tilted object beyond Neptune moves in perfect sync, one orbit for every ten of Neptune’s, and scientists are ...

Harvard & Smithsonian has discovered a rare object far beyond Neptune, from a class known as trans-Neptunian objects, th ...

NASA’s Hubble Space Telescope has spied a brand-new blemish on the surface of Neptune. New images from the spacecraft reveal that a "dark vortex" has popped up in the planet’s atmosphere.

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 ...

Friday, May 2, presents a perfect opportunity to catch the mighty ice giant Neptune close to the planets Saturn and Venus in the pre-dawn sky, before they break their close-knit formation later in ...