What is Antikythera mechanism, today's Google doodle?
Google celebrated the 115th anniversary of Antikythera mechanism's discovery with a doodle on Wednesday. On 17 May 1902, a Greek archaeologist found a bronze artefact from a shipwreck which turned out to be part of the Antikythera Mechanism, an analog computer dated to 150 BC. The gear-like structure tracked planetary positions, predicted eclipses, and even signalled the next Olympic Games.