The Antikythera mechanism, an ingenious calculator made 2,200 years ago, has inspired awe and enchantment ever since it was recovered from a shipwreck near a Greek island in 1901. Generations of researchers have unraveled many mysteries about the device, which is often described as the world’s first analog computer, though much remains unknown. A study published this month in The Horological Journal challenges a core assumption about the mechanism that could upend understanding of the complex timepiece’s form and function. That result conflicts with earlier research that identified the ring as a solar calendar, lined with 365 holes. “It’s a slightly contentious idea,” said Dr. Woan, who acknowledged that he and Dr. Bayley are not experts on the device.

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Persons: Graham Woan, Joseph Bayley, ”, Woan, Bayley Organizations: University of Glasgow