The asteroid that wiped out the dinosaurs did not trigger a long-lasting impact winter, scientists have found — a discovery that raises new questions about what happened on Earth just after it hit.
One spring day 66 million years ago, a 6-mile-wide (10 kilometers) asteroid smashed into the Yucatán Peninsula and upended life on Earth. This event, called the Chicxulub impact, triggered a mass extinction that wiped out 75% of species, including all non-avian dinosaurs.
