New evidence suggests it was matter ejected from the Chicxulub crater that led to impact winter

New evidence suggests it was matter ejected from the Chicxulub crater that led to impact winter
A large asteroid (~12 km in diameter) hit Earth 66 million years ago, likely causing the end-Cretaceous mass extinction. Credit: Southwest Research Institute/Don Davis

A team of researchers from the U.S., Australia and the U.K. has found evidence that suggests material thrown into the atmosphere by the asteroid that struck the Earth approximately 66 million years ago, and not massive wildfires, led to a mass extinction event. In their paper published in Proceedings of the National Academy of Sciences, the group describes their study of sediment from the Chicxulub crater and other ocean areas and what it showed them.


Over the past several decades, Earth scientists have come to believe a large asteroid slammed into the Earth just off the coast of what is now Mexico’s Yucat√°n Peninsula approximately 66 million years ago. The impact of the asteroid strike was so great that it led to a mass extinction

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