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@ Biro Bela
2025-05-07 00:32:02Carl Sagan explains how the ancient Greeks knew the Earth was round and calculated its circumference over 2,000 years ago. https://blossom.primal.net/7f0f7ee4b68386137fa7c86cfad3c8a06a610157b4640283c1a0d2e4caffcbe6.mp4