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.

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

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 ...