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The Nine Planets

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Eris

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The Eight Planets

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Ceres
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Haumea
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Eris

The Solar System

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About Nine Planets

The Nine Planets has been online since 1994 and was one of the first multimedia websites that appeared on the World Wide Web.

Take an interactive tour of the solar system, or browse the site to find fascinating information, facts, and data about our planets, the solar system, and beyond.

Explore The Nine Planets

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Pluto (the ninth planet)

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