Neptune is a gas giant and does not have the same sort of surface that our planet has. Neptune consists of different layers. The atmosphere consists of hydrogen, helium and methane gases. The mantle contains water, ammonia and methane ices. The core contains rock and ice. I think it is an amazing Planet!
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Neptune's surface is mostly composed of icy substances like water, ammonia, and methane, overlaid with a layer of thick clouds of hydrogen and helium gases. Due to its extreme distance from the Sun and its frigid temperatures, there is no solid surface like we see on rocky planets like Earth.
Neptune has no actual surface layer. Beneath the gaseous atmosphere that comprises the majority of the planet, it has a mantle similar to earth's.
gasses small water vapor
Neptune is made up of: 74% hydrogen, 25% helium and 1% methane.
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Neptune's atmosphere is composed primarily of hydrogen and helium, along with traces of hydrocarbons and possibly nitrogen, contains a higher proportion of "ices" such as water, ammonia and methane. Neptune's surface is primarily composed of ice and rock. Methane surrounding the planet gives it the blue hue.