• betanumerus@lemmy.ca
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      2 hours ago

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

      • NotMyOldRedditName@lemmy.world
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        47 minutes ago

        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.