In the small town of Ottosdal, in central North West Province of South Africa, miners working in pyrophyllite mines have been digging up mysterious metal spheres known as Klerksdorp Spheres. These dark reddish brown, somewhat flattened spheres range in size from less than a centimeter to ten centimeters across, and some of them have three parallel grooves running around the equator. The most striking examples have the uncanny appearance of being something manufactured. But here is the kicker — these metallic objects have been dated to 3 billion years old, a time when the Earth was too young to host intelligent life capable of creating these spheres. No wonder, these objects have attracted attention and speculation from not only the scientific community but various fringe groups including creationists and advocates of "ancient astronauts theory”.
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