r/interestingasfuck • u/howimetyourcakeshop • 10h ago

Our moon being formed.

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u/Mdgt_Pope 4h ago

The other 24% is earth, you watched the clip but missed that chunk come from the impact?

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u/Longjumping_Wolf_912 3h ago

Yes, but I think what they are saying/asking is if 76% of the material of the moon is not of Earth and that of Theia, it should still have a different signature. Which I think is a valid question, but I’m sure there is a scientific explanation. I don’t know what a signature is or how it is measured/determined.

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u/JalapenoConquistador 3h ago

I think we’re missing that most of Theia is in Earth. So we have EarthTheia here. And the moon has TheiaEarth with all the same signatures.

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u/Longjumping_Wolf_912 3h ago

It would be helpful if they put the mass of Earth and Theia in the video. But that is a good point. I’m also curious if this is based on a collection of samples from both Earth and the moon. As in some samples have matching signatures, but others don’t. To get a homogenous distribution of matter of both bodies on both surfaces seems unlikely (I’m not sure if they had drills on the moon and if so, how deep the samples were).