TIL that the oldest known Earth rock was discovered in 2019… embedded in a boulder brought back from the moon by Apollo 14. It is the first discovered meteorite from Earth.

Read more: https://en.wikipedia.org/wiki/Big_Bertha_(lunar_sample)

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  1. I suppose it is from when earth and the moon collided and the molten lava was all there was and it was surrounded by moondust and rocks of the moon whatever form it was when they were done colliding.

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