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Neptune's atmosphere is composed primarily of hydrogen and helium, contains ices of water, ammonia and methane, along with traces of hydrocarbons and maybe nitrogen. The interior of Neptune is composed mainly of ices and rocks like. Traces of methane in the outermost regions account, in part, for the planet's blue appearance. Neptune has the strongest winds of any planet in the solar system, measured as high as 1300 miles per hour.

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16y ago

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