Hmmm..... this is interesting - https://www.space.com/asteroid-ryugu-sample-older-than-planets
"Samples returned to Earth by a Japanese asteroid mission are the most untouched materials ever studied in the solar system. The asteroid Ryugu contains some of the most primitive material ever studied in a laboratory on Earth, dating back to just 5 million years after the formation of the solar system, according to an analysis of samples retrieved by Japan's Hayabusa2 mission."
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