Nadir crater: The asteroid that killed the dinosaurs was not alone

Getty ImagesThe huge asteroid that hit Earth and wiped out the dinosaurs 66 million years ago was not alone, scientists have confirmed.A second, smaller space rock smashed into the sea off the coast of West Africa creating a large crater during the same era.It would have been a “catastrophic event”, the scientists say, causing a tsunami at least 800m high to tear across the Atlantic ocean.Dr Uisdean Nicholson…