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• 01:23, 5 November 2022 Xanderox talk contribs uploaded File:903 new aging technique.jpg (from phys.org article: A slice of a Martian meteorite nicknamed "Black Beauty," which has fragments of older rocks embedded. The color is added to indicate different elements: red is magnesium, green is calcium, and blue is aluminum. Using a new instrument, a group including scientists from the University of Chicago and the Field Museum estimated this meteorite to be 2.2 billion years old. Credit: Maria Valdes)