Google on Wednesday dedicated its doodle to honour the 115th anniversary associated with discovery for the Antikythera Mechanism which is thought to be the world’s first computer.

“Today’s Doodle illustrates how a rusty remnant can open up a skyful of knowledge and inspiration,” Google said.

The archaic-looking doodle depicts a stone like a wheel predicting the Olympics, lunar and solar eclipse and tracking planetary positions.

The mysterious artefact was salvaged with this date in 1902 by Greek archaeologist Valerios Stais while shifting through some artefacts from a shipwreck at Antikythera.

The wrecked Roman cargo ship was discovered 2 yrs earlier, but Stais was the first to ever notice an intriguing little bit of bronze among the treasures. It appeared to be a gear or wheel.

The corroded chunk of metal turned out to be an element of the Antikythera Mechanism, an ancient analogue astronomical computer.

The mechanism was used to track planetary positions, predict lunar and solar eclipses, and also signalled the next Olympic Games.

“It was probably also used for mapping and navigation,” Google said.

The mechanism initially dated around 85 BC, was suggested to be even older (about 150 BC) by recent studies.

The crank-powered device was way ahead of their time — its components are as intricate as those of some 18th-century clocks.

Historians continue to ponder the Antikythera Mechanism’s purpose and inner workings, and visitors to the National Archaeological Museum of Greece marvel at its delicate complexity.