• HauntedCryme

    Isn't saying "Pluto and Charon are totally different" the same as saying "Earth and its Moon are totally different"?

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    • jmcs

      I think what they mean is that Pluto and Charon could have very different compositions, while the Earth and the Moon are nearly the same composition.

    • bogdan

      Many people saying Pluto is not a planet, and the two might orbit around each other.