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Neptune is the fourth largest planet in the Solar System.
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The only spacecraft ever to visit Neptune was the Voyager 2 in 1989.
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Neptune is a gas planet, composed of hydrogen, helium, methane, with
traces of ammonia and water.
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The blue color of the planet is due to the absorption of red light by
methane in the atmosphere.
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Neptune has actually been the most distant planet from the sun since
1979, due the fact that Pluto's orbit is highly eccentric. Pluto will
be the most distant planet from the again in 1999.
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Neptune has the stronger winds than any other planet in the Solar
System. Blowing in a westerly direction, winds on Neptune get up to
2,000 km/hour (1,200 miles/hour). "The Scooter" is a cloud
that moves around Neptune about every 16 hours.
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Neptune is the god of the sea in Roman Mythology.
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