This is a schematic of the interior of Neptune. Click on image for full size version (48K GIF)

The Giant planets do not have the same kind of structure inside that the terrestrial planets do. Their evolution was quite different than that of the terrestrial planets, and they have much more gas and ice inside.

Neptune's interior composition is primarily that of methane ice, just as Uranus' is.

Motions in the interior of Neptune contribute to the formation of the magnetosphere of Neptune. Heat generated within Neptune contributes to the unusual strength and motions of the atmosphere.

This is a drawing of the interior of Neptune. Click on image for full size version (48K GIF)

The Giant planets do not have the same kind of layers inside that the Earth-like planets do. Their evolution was quite different than that of the Earth-like planets, and they have much more gas and ice inside.

Neptune's interior make-up is primarily methane ice, just as Uranus' is.

Motions in the interior of Neptune help form the magnetosphere of Neptune. Heat generated within Neptune helps form the unusual winds of the atmosphere.

This is a drawing of the interior of Neptune. Click on image for full size version (48K GIF)

The Giant planets do not have the same kind of layers inside that the Earth-like planets do. The history of the giant planets was so different that they formed with much more gas and ice on the inside.

Motions in the interior of Neptune help form the magnetosphere of Neptune. Heat generated within Neptune helps form the unusual winds of the atmosphere.