Watch “The ancient ‘computer’ that simply shouldn’t exist – BBC REEL” on YouTube

A hundred and twenty years ago, divers discovered a shipwreck off the island of Antikythera in Greece. What they found changed our understanding of human history. The mysterious Antikythera Mechanism has captured the imagination of archaeologists, mathematicians, and scientists ever since. Now, using the latest 3D x-ray and modelling technology, experts are unravelling the secrets of what this machine may have been capable of. Video by Harriet Constable