How do the scientists know what the core of other planets are made of, (eg: Mars’ core is iron, Neptune’s liquid diamond) even though mankind has never been there?
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No, they dont guess. Their mass is determined by their gravity, which is determined by how they affect over objects. This gives them indications on density. Spectrometry will give them the atmospheric makeup and density and math solves the rest.
https://courses.lumenlearning.com/astronomy/chapter/composition-and-structure-of-planets/
Guessing. Lol, just feaking lol. Ignore everything that guy wrote.
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