A 2,000-year-old computer called the Antikythera Mechanism helped the ancient Greeks understand their universe

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The world’s oldest known computer lay submerged for more than 2,000 years off the treacherous coast of the Greek island of Antikythera. Beneath the weight of the water, the sand, and the wrecked ship that once carried it, the ancient astronomical computer’s bronze gears and mechanical parts slowly warped and rusted.

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