Google Doodle marks discovery of Antikythera Mechanism

Wednesday's Google Doodle celebrates the 115th anniversary of the discovery of the Antikythera Mechanism, one of the most remarkable scientific objects of antiquity.

The 2nd-century BC device, often hailed as the world's oldest computer, was retrieved from a shipwreck by sponge divers in 1902 off the remote Aegean island.

The highly complex mechanism of up to 40 bronze cogs and gears was used by the ancient Greeks to track the cycles of the solar system.