The oldest computer in the world was under the coast of the Greek island of Antikythera for more than 2,000.
At the turn of the 20th century, a group of fishermen discovered for the first time the Antikythera Mechanism.
After two years the Greek politician Spirydon Stairs visited the museum, where there some remainings of the wreck and he saw the Antikythera Mechanism…

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Scholars believed that the official date of the discovery of the Antikythera Mechanism, was earlier because in 1902 Greece was still using the Julian calendar. For the past several years, scientists have been using X-rays so they can look inside the Antikythera Mechanism and reconstruct how it looked  like when they first made it.

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It is known that this clock-sized device has nearly 30 interlocking, spinning gears which used to control the dials tracking of the sun, the moon, the planets and the schedule for the Olympics.

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If you turn the hand crank jutting from the device’s frame spun the gears, the hands on the dials will move and in that way the user can  predict eclipses.

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The researches also found a description on this complicated device, which included some discussions of the colors of the eclipses and other details such as astrological predictions. Of course there are many things that they hope to find out in the future and hopefully to give an answer in this big question!