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Enter content here The atmosphere of Neptune is very similar to that of Uranus, and unlike that of Saturn and Jupiter.
On Jupiter and Saturn, the atmosphere is mostly composed of the simple molecules hydrogen and helium.
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Neptune is only 1.19 times of the gravity on Earth. This is because it is such a large planet . Neptune is about 30,775
miles (49,528 km) in diameter. This is 3.88 times the diameter of the Earth. If Neptune were hollow, it could hold almost
60 Earths. 
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