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[–] 2 points 1 week ago (1 child)

The molten core is hot because a whole lot of rocks crashed into each other. Also, nuclear decay.

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  • Well... those are remnants of a supernova aren't they? So the velocities to have meaningful impacts came from a sun?

    Definitely not what I was thinking or trying to say though, and not our sun, but kinda still all the energy comes from at least, a sun.

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