At 4.4 Billion Years Old, This Is The Oldest Piece Of Earth Ever Found
At 4.4 Billion Years Old, This Is The Oldest Piece Of Earth Ever Found
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At 4.4 Billion Years Old, This Is The Oldest Piece Of Earth Ever Found
Here's the Wikipedia article on these billions year old crystals: https://en.wikipedia.org/wiki/Hadean_zircon