Antikythera Group

Verified Timeline

Lore & Background

The Antikythera Mechanism emerged from the wreckage of a Roman cargo ship found at 45 metres depth near Point Glyphadia in early 1900. Captain Dimitrios Kontos and sponge divers from Symi recovered it in July 1901, though it sat unnoticed as a corroded lump for two years until May 17, 1902, when Spyridon Stais spotted a gear embedded in the rock. Originally housed in a wooden-framed case measuring roughly 34 cm × 18 cm × 9 cm, the device fractured into three main fragments upon recovery, eventually splitting into 82 separate pieces after conservation. Four of these fragments contain gears, with the largest being about 13 cm in diameter and originally holding 223 teeth. Inscriptions on many fragments reveal connections to synodic cycles of Venus and Saturn, deciphered fully by 2016.

In Their Own Story

The mechanism's history spans from its construction before a shipwreck dated to 70–60 BC to modern rediscovery. In 2005, a Cardiff University team led by Mike Edmunds used X-ray tomography to read faint inscriptions and reveal the 37 bronze gears inside. These scans showed it could follow the Moon and Sun through the zodiac, predict eclipses, and model the Moon's velocity changes between perigee and apogee—a motion studied by astronomer Hipparchus of Rhodes in the 2nd century BC. Researchers propose calibration dates of either December 23, 178 BC, or 204 BC. Theories on its origin point to Corinthian colonies, Pergamon, or Rhodes, where Posidonius founded an academy and Hipparchus worked. No 'group' built it; rather, Hellenistic scientists likely designed it, with machines of similar complexity not reappearing until the 14th century in western Europe.

Reader's Guide

When studying this artifact, focus on the specific fragments and their mechanical significance. Of the 82 known pieces, only seven are mechanically significant, containing most gears and inscriptions. Fragment 19 holds key back-door text referencing the Callippic cycle ('...76 years...'). Conservation efforts have separated the original lump into these parts, all kept at the National Archaeological Museum in Athens alongside reconstructions. The largest gear's 223 teeth are a defining feature. Do not search for a fictional faction; instead, examine the real-world timeline: discovered 1901, studied by Valerios Stais in 1902, analyzed by Derek J. de Solla Price from 1951, and imaged via high-resolution scanning in 2005. The device's complexity remained unmatched for roughly 1,500 years.

Did You Know?

• The mechanism was found as a single lump in 1901 but is now divided into 82 separate fragments.
• The largest gear originally had 223 teeth and measures about 13 cm (5 inches) in diameter.
• In 2005, X-ray tomography revealed the device contained exactly 37 meshing bronze gears.
• Machines of similar complexity did not reappear until the 14th century in western Europe.
• The mechanism could predict astronomical positions and eclipses decades in advance.