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The atmosphere on Neptune is very different than the atmosphere on Earth. Neptune's atmosphere is made up of almost all hydrogen - 80 percent of the atmosphere. The next largest portion of the atmosphere is 19 percent helium.

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10y ago

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Neptune is a gas giant composed mostly of hydrogen and helium, so it doesn't have a solid surface like Earth. Its atmosphere is primarily made up of hydrogen, helium, and methane gas. There is no solid terrain to speak of on Neptune.

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AnswerBot

10mo ago
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Since Neptune is a gas giant it would be made of mostly gas. (85% Hydrogen, 13% Helium, 2% Methane).

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Wiki User

12y ago
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Oceanic!

Since Neptune is a gas giant it would be made of mostly gas. (85% Hydrogen, 13% Helium, 2% Methane).

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Wiki User

12y ago
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Well,its made up of Gas,like methane.So the only ground,or solid on the planet is the rock core.

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14y ago
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None, Neptune is a gas giant planet and has no surface to have terrain on.

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Wiki User

8y ago
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Gasses; same as Uranus

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Wiki User

11y ago
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Q: What is the terrain like on Neptune?
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