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2.8 Billion-Year-Old Spheres balanced within one-hundred thousandths of an inch from absolute perfection have created confusion among experts. They vary in size from 30 – 50 mm in diameter and have perfectly concentric grooves around the center as if they were molded: https://humansarefree.com/2020/10/who-crafted-the-2-8-billion-year-old-klerksdorp-spheres.html
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