The moon is about as old as we thought it was

Meteorite from Chelyabinsk, Russia

Meteorites with dark veins and blobs, like the sample above, experienced high heat when the blast from the planetary collision that formed the moon hit the asteroid belt 4.47 billion years ago. The dark coloration on the edge of the sample is from entering the Earth's atmosphere.

Qingzhu Yin, University of California, Davis

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