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A comment on Planetary 'autopsies' indicate worlds like Earth common in the cosmos. Parent comment

Re:Planetary 'autopsies' indicate worlds like Earth common i... by raducu on Monday October 21, 2019 @06:48AM (#21310795)
But wouldn't those substances be buried deep in the soil 1 billion years later? Or in the case of Earth with all the plate tectonics, entire plates could be already inside Earth's mantle.
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