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Planets: Uranus

Neptune's Great Dark Spot, accompanied by white high-altitude clouds, as seen by a Voyager spacecraft. Photos from NASA's Voyager 1 and 2 Probes


In Voyager 2 made our first close encounter with the stunning blue planet Neptune. Its surprisingly turbulent, storm-laden atmosphere, this far from the sun, was clearly being driven by heat from deep within the planet [Photo: Nasa/Corbis]

Interesting Facts About Neptune

NSSDCA Photo Gallery: Neptune - A collection of images of the planet Neptune and its satellites

The color of Neptune is a bright azure blue. During its flyby in 1989, NASA’s Voyager 2 revealed the bright blue color, different from the pale blue color of Uranus. So why does Neptune have this color?  The answer to Neptune’s color comes from its cloud tops. The upper atmosphere of Neptune is made up of 80% hydrogen,19% helium with a trace 1% amount of methane and other ices, like ammonia and water. Methane absorbs light at 600 nm, which is the red end of the spectrum of visible light.

Neptune Full Disk View (NASA Voyager Neptune Encounter Images) - Featured: the planet Neptune

Neptune: Planet of seas - Last of Solar System's giants - Before smaller worlds

Neptune: Planet of seas - Last of Solar System's giants - Before smaller worlds Neptune is the most beautiful world. It rains diamonds


A new study used amateur and professional images of Neptune to track storm systems on the distant planet.

Neptune is the windiest planet. Winds travel up to 1300 MPH

Neptune: Dark, cold, and whipped by supersonic winds, Neptune is the furthest…

In this image, the colors and contrasts were modified to emphasize the planet's atmospheric features. The winds in Neptune's atmosphere can reach the speed of sound or more. Neptune's Great Dark Spot stands out as the most prominent feature on the left. Several features, including the fainter Dark Spot 2 and the South Polar Feature, are locked to the planet's rotation.

By tracking atmospheric features on Neptune, a UA planetary scientist has accurately determined the planet's rotation, a feat that had not been previously achieved for any of the gas planets in our solar system except Jupiter.

Neptune from First Voyager 2 Flyby | Flickr - Photo Sharing!

(August Voyager 2 was the first spacecraft to observe the planet Neptune and its two satellites: Triton, the largest, and Nereid. The most obvious feature of the planet is its blue color, the result of methane in the atmosphere.

Planet Neptune fact and fun--how it was discovered and its mysterious moons!

Neptune: The Other Blue Planet

Neptune’s Great Dark Spot, as seen by Voyager 2 in 1989