Greek engineers built a shoebox-sized device with over thirty interlocking bronze gears that could predict eclipses, track planetary motion, and model the cosmos decades into the future.
Then it disappeared. A storm drove the ship carrying it into the rocks off a small island in the Aegean Sea. It sank. It sat on the seafloor for twenty-one centuries. Sponge divers pulled it up in 1901. It took another hundred years for modern science to understand what it actually was.
The island was called Antikythera.
