Scientists have recreated a 2000-year-old device referred to as the oldest computer; scientists were confused by how the device worked for many years.

The Antikythera Mechanism baffled tech experts since it was found in a shipwreck from Roman-era in Greece in 1901.

This Greek device was operated by hand and was reportedly used to predict eclipses and other astronomical events, BBC reported.

Researchers were pondering as a third of the device had survived all these years, for many years experts were thinking about how this device work and what it looked like.

The back of the mechanism was solved by earlier researches but the complex gearing system of its front remained a mystery.

According to BBC, scientists from University College London believed that they have finally cracked the puzzle using 3D computer modeling, they created an entire front panel and soon will build a full replica of the Antikythera.

A paper published in the UK on Friday revealed a new display of the gearing system that showed the final details and complex parts of the ancient device.

“The Sun, Moon, and planets are displayed in an impressive tour de force of ancient Greek brilliance,” the paper’s lead author, Professor Tony Freeth said, BBC reported.

“Ours is the first model that conforms to all the physical evidence and matches the descriptions in the scientific inscriptions engraved on the mechanism itself,” he added.

The mechanism in the paper was described to an astronomical calculator and the world’s first analog computer discovered and the entire device is made of bronze.

At the back of the device, a description of the cosmos is displayed, which indicates the movement of the five planets known at that time.

Modern scientists left with 82 fragments of the device that made a third of the device had to struggle and piece together the full picture using X-Ray data and ancient Greek mathematical methods to create Antikythera’s full shape.

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