The Antikythera Mechanism (c. 200-1 BC)

When it was first discovered at the beginning of the 20th century, the Antikythera Mechanism baffled archaeologists. It was a confusing muddle of modern-looking gears that had been resting at the bottom of the ocean for 2,000 years. Conspiracy theorists claimed it was evidence of a smashed alien vessel, while others thought it was a long-lost piece of Atlantean hardware. One investigator dubbed it an "ancient Greek computer," and time has proven that somewhat accurate. It is now believed the mechanism was a kind of astronomical calculator. X-ray imaging and CT scans have revealed the device's interlocking gears were used to track the movement of the sun, moon, and planets visible to the naked eye. Inscriptions describe the dates when particular stars rise and set, and a dial on the back tracked lunar and solar eclipses.















