It may not have been just one asteroid that wiped out the dinosaurs but two, a new breakthrough discovery suggests.
An Edinburgh scientist has identified a six mile-wide crater just off the coast of West Africa thought to have been created by a vast rock which hit the Earth around 66 million years ago.
The crater is thought to have been created at a similar time as the crater in the Gulf of Mexico caused by a larger eight mile-wide asteroid that smashed into the Earth and caused horrific conditions that killed off the dinosaurs.
