In 1900, the Antikythera mechanism was discovered in a shipwreck off the coast of the Greek island by that name. The device dates to around 150 to 100 BCE and calculates the positions of the sun, moon, planets and stars. There are hands for the zodiac as well, demonstrating its important in astronomy a century before the common era.

Below is a video showing the reproduction of this marvelous mechanism, including how it works.

As do many other archaeological artifacts, this divine device demonstrates just how advanced were some ancient cultures. I am very partial to the Greek culture, of course, having studied and spent quite some time in that lovely land.

It has been suggested that famed Greek inventor and genius Archimedes created this device, while others claim it was the astronomer Poseidonius of Rhodes who made it in 80 BCE.

Fascinating! It must have been a wonder to behold in antiquity!