Â鶹Éç

Available for over a year

A huge space rock slammed into the planet, digging out a hole a hundred km wide and thirty km deep. The debris hurled outwards, darkened the sky and chilled the climate, driving many creatures to extinction. What remains of the crater is deeply buried under ocean sediments off the Yucatan Peninsula in Mexico. Our Science Correspondent, Jonathan Amos is in Bremen where the rocks are being analysed