Neptune-like Planets - - The Exoplanet Directory

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Classes of Exoplanets

Neptune-like Planets

September 2015

These are planets which, similar to Neptune, have formed in the outer zones of their solar system. Neptune consists of hydrogen, helium and various ices (water, methane, ammonia). Inside it is assumed to have a solid core of approximately Earth mass consisting of rock and metal. The planet Neptune is about 17 times as massive as Earth.
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