Joined January 2008

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Neptune, a ringed planet with 8 moons, is also the Roman name for Poseidon, the god of the sea and earthquakes.
Despite being one of the larger planets, the beautiful blue Neptune is not visible to the naked eye. Neptune is the eighth planet from the Sun. Like Saturn and Uranus it is a gas giant. It contains a small rocky core surrounded by an icy mantle of frozen water, methane and ammonia. Its diameter is almost four times the Earth’s. Neptune has a magnetic field. Unusually for a planet, the magnetic axis is tilted far from the rotation axis. It is thought that the field may originate in the mantle rather than the core. Neptune radiates almost 3 times more energy than it receives from the Sun. The origin of this energy is not understood.
The outer atmosphere is mainly hydrogen and helium, with a little methane. The atmosphere contains clouds and large spots, somewhat like Jupiter’s Great Red Spot except they change far quicker. The highest clouds contain crystals of methane ice. Lower ones may contain frozen ammonia or hydrogen sulfide. There is also a haze of hydrocarbons produced by the action of sunlight on methane.

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Artwork Comments

  • mcquaid
  • TeriLee
  • aspectsoftmk
  • TeriLee
  • linaji
  • TeriLee
  • Greta  McLaughlin
  • TeriLee
  • WhiteDove Studio kj gordon
  • TeriLee
desktop tablet-landscape content-width tablet-portrait workstream-4-across phone-landscape phone-portrait
desktop tablet-landscape content-width tablet-portrait workstream-4-across phone-landscape phone-portrait

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