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by gwd
969 days ago
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It's interesting that you changed the question, because if you had education answer the same question, it would be a lot less compelling: > In education: "The earth accumulated matter together after a previous supernova." > How do you know that? "It's written in this book." In the vast majority of cases, that is literally how the teacher knows it: they don't actually know the evidence or the chain of reasoning that science took to get to where the current theory is, nor how one could actually go about gathering the evidence oneself to prove it true or false. |
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We were taught basic nuclear physics in middle school and were shown the valley of stability.
https://en.wikipedia.org/wiki/Valley_of_stability
Atoms larger than iron came from atoms crashing together like in an atom bomb ie super novas and similar, while atoms smaller than iron can come from regular decaying processes. Doesn't take much to explain that.
Does it explain exactly how the nuclear energy was calculated? No, but we can see how people figured out that parts of earth came from a super nova. This is very different from just "it was written in a book".