An ancient mechanical computer recovered from a Roman shipwreck off Antikythera.
Play It
Characterization
The Antikythera Mechanism is a corroded bronze artefact recovered between 1900 and 1901 from a Roman shipwreck off the Greek island of Antikythera. It dates from the second century BCE and is the oldest known geared analogue computer — a hand-cranked device that predicted lunar and solar positions, the dates of eclipses, and the four-year cycle of the Panhellenic athletic games. Its existence overturned a century of assumptions about Hellenistic technology. The mechanism has been imaged by X-ray tomography and reconstructed, in stages, from the eighty-two surviving fragments; the most recent reconstruction (UCL, 2021) proposes a complete front-face cosmos display. It contains at least thirty gears, including a differential of a kind not seen again in Europe until the fourteenth century. The Academy holds the Antikythera Mechanism as a Wonder because no inheritance is possible without it: a Greek world that built such a thing was a more capacious world than even the ancient sources let us see. The Sage’s quest, weighted here above the others, is to explain what we know — and what we still do not.
Lineage
Recovered 1900–1901 by Symiote sponge divers. First reconstructive work by Derek J. de Solla Price, Gears from the Greeks (1974). Imaging campaign by the Antikythera Mechanism Research Project (Freeth, Bitsakis, Edmunds, et al., 2002 onward), with major findings in Nature (2006, 2008). The 2021 UCL reconstruction (Freeth et al., Scientific Reports) proposes the complete front cosmic-display assembly.
Quests
The Magus
Design a small mechanical or digital model demonstrating one of the Antikythera Mechanism’s astronomical relationships — the Metonic cycle, the Saros, or the synodic month — and document the gear ratios involved.
The Adventurer
Visit the Mechanism (in person at the National Archaeological Museum of Athens, or via a high-fidelity reconstruction or digital simulation) and operate it — or its simulation — to produce one prediction for a date of your choice.
The Sage
Explain what the Antikythera Mechanism is, what it predicts, and what its existence tells us about Hellenistic science. Place it among at least two other documented artefacts of ancient technology, and identify which questions about the device remain unresolved.