In 1901, a group of sponge divers discovered, off the Greek island of Antikythera, the remains of a Roman shipwreck. Over time it would become one of the most studied objects in archaeology: a geared mechanism dated to between 150 and 100 BC, designed to calculate astronomical positions and predict eclipses. One of the most widely cited hypotheses, set out in the Antikythera Mechanism Research Project, points to an origin linked to the Corinthian colonies, possibly Syracuse, and therefore to the school of Archimedes, although the exact authorship remains unconfirmed. On the front, a small sphere, half white and half black, rotated to show the exact phase of the Moon. In different parts of the world scaled replicas have been built for educational purposes, such as Mexico's Monumental Antikythera Mechanism project, designed to train new physicists and engineers.