This mysterious ancient computer has a ‘calendar ring’ that tracked the lunar year

two images side by side. one is a rusty circular device. the second is a box with two circles on it, with dials

New research into ripples in the fabric of spacetime suggests that a nearly 2,000-year-old cosmic calculator followed the lunar calendar instead of the solar calendar. The hand-cranked “Antikythera Mechanism” was recovered in pieces from a sunken shipwreck in the Aegean Sea in 1901, sparking more than a century of research into how it was made—and … Read more