• stevestevesteve@lemmy.world
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    2 years ago

    The mantle is between 500-4500K, meaning most of it is hot enough to glow at least a dull red.

    You don’t say lava is black because once it cools down it turns black…

      • anton@lemmy.blahaj.zone
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        2 years ago

        Early scientific estimates of the age of the earth are underestimated it because they assumed the hot potato model, but radioactive decay keeps the earth hot for longer.