Neptune
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is the outermost planet of the gas giants. It has an equatorial
diameter of 49,500 kilometers (30,760 miles) and is the eighth planet from the
sun. If were hollow, it could contain nearly 60 Earth's.
orbits the Sun every 165 years. It has eight moons, six of which were found by
Voyager 2. A ....
Middle of paper
.... thirds of Neptune is composed of a mixture of molten rock, water, liquid
ammonia and methane. The outer third is a mixture of heated gases comprised of
hydrogen, helium, water and methane. The atmospheric composition is 85%
Hydrogen, 13% Helium, and 2% methane. The planet's atmosphere, particularly
the outer layers, contains substantial amounts of methane gas. Absorption of
red light by the atmospheric methane is responsible for Neptune's deep blue
color. Neptune is a dynamic planet wi ....
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