Ancient stone carvings confirm that a comet struck the Earth around 11,000BC, a devastating event which wiped out wooly mammoths and sparked the rise of civilisations. Experts at the University of Edinburgh analysed mysterious symbols carved onto stone pillars at Gobekli Tepe in southern Turkey, to find out if they could be linked to constellations. The markings suggest that a swarm of comet fragments hit Earth at the exact same time that a mini-ice age struck, changing the entire course of human history.
