Asteroid Wiped Out the Dinosaurs in Hours - Universe Today
It seems that when an asteroid struck the Earth 65 million years ago, the resulting heat pulse incinerated every dinosaur on the planet in just a few hours; only those that were in burrows or underwater likely survived. When the 10 km (6 mile) asteroid hit Chicxulub in the Yucatan, it struck with the force of 100 million megatons of TNT. A new paper published by several US university researchers calculates how ejected material would have heated the atmosphere to the equivalent of a global oven set on broil.