r/interestingasfuck • u/howimetyourcakeshop • 10h ago

Our moon being formed.

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u/ChemicalRain5513 7h ago

that a lot of the material analyzed is made of the same stuff from the earth.

They were formed in the same solar system, I bet Mercury is made of a lot of the same stuff as Earth too, no? Not to disagree with the hypothesis, but I am guessing there must be more evidence?

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u/sebaska 7h ago

Other planets have slightly different isotopic composition. The exact ratios of various isotopes differ. Go to Mars - local minerals have martian isotopic signature. Check out meteorites - they have even different signatures. Go to the Moon - and the damn thing has the same signature as the Earth.

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u/LordBlackadder92 4h ago

According to the clip the moon is 76% Theia. So the moon samples were collected at the other 24%?

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u/BedBubbly317 2h ago

After the collision the isotopic makeup of each planet essentially blended together. When the collision happened, Earth and Theia became a molten ball of superheated magma with no solid surface whatsoever. It took the Earth an estimated 300 million years just to cool off and regain its solid surface again.