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The atmosphere of Neptune is composed primarily of hydrogen, with a small percentage of helium and a smaller percentage of methane. Trace amounts of hydrogen deuteride and ethane are also present. Ices of ammonia, water and amonium hydrosulfide are also present.

A link to the Wikipedia article on Neptune is available for use by the curious reader.

it is primirly composed of helium and hydrodren along with traces of methane

Without Methane it's Atmosphere Neptune Wouldn't look blue.

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15y ago

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