Discovery of the Antikythera Mechanism

On May 17, 1902, the Antikythera mechanism, an ancient mechanical analog computer, was discovered by Greek archaeologist Valerios Stais. The artifact was recovered from the Antikythera shipwreck off the Greek island of Antikythera and is believed to have been designed and constructed by Greek scientists as far back as possibly 205 BC. It was apparently used to predict astronomical positions and eclipses for calendrical and astrological purposes.