Timeline of Cretaceous–Paleogene extinction event research Hildebrand and William Boynton reported the Chicxulub crater in the Yucatan peninsula of Mexico as a probable impact site. While the controversy continued, the accumulating evidence gradually began to sway the scientific community toward the Alvarez hypothesis. In 2010, an international panel of researchers concluded that impact best explained the extinction event and that Chicxulub was indeed the resulting crater. Because the estimated date of the object's impact and the Cretaceous–Paleogene boundary (K–Pg boundary) coincide, there is now a scientific consensus that this impact was the Cretaceous–Paleogene extinction event which caused the death of most of the planet's non-avian dinosaurs
Chicxulub crater of bolide-weakened lithostratigraphy around the impact crater wall. More recent evidence suggests the actual crater is wide, and the 180 km ring is in fact an inner wall of it. Researchers at the University of Glasgow dated tektite samples from the impact as 66,038,000 ± 11,000 years old. The Chicxulub impactor had an estimated diameter of , and delivered an estimated energy of 21–921 billion Hiroshima A-bombs (between formula_1 and formula_2 joules, or 1.3–58 YJ). By contrast, the most powerful man-made explosive device ever detonated, the Tsar Bomba, had an energy of only 210 petajoules (formula_3 joules, the yield of