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Planet Neptune. Dark, cold and whipped by supersonic winds, Neptune is the last of the hydrogen and helium gas giants in our solar system. More than 30 times as far from the sun as Earth, the planet takes almost 165 Earth years to orbit our sun. In 2011 Neptune completed its first orbit since its discovery in 1846.

Neptune - always been my favorite planet :)

It shows surface features that are somewhat like those of Jupiter, with a Great Dark Spot showing during the 1989 Voyager 2 flyby along with visible bands and clouds. Later, in 1994, the Hubble Space Telescope did not see the spot but found a similar one in the other hemisphere.

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.

Under the Milky Way Series by ross berens

Planet+Neptune+Information | Click to see full-size image)

Jupiter aurora; the bright spot at far left is the end of field line to Io; spots at bottom lead to Ganymede and Europa

4th largest planet, 8th furthest away... Neptune

Scale of the Planets - Space Facts - Earth is Pretty Small!

Very Pretty !!! Sheldon probably has this on his bedroom wall :)