There's no question over whether an asteroid hit. The roughly 6-mile-wide (10-kilometer) space rock carved out the Chicxulub crater off Mexico's Yucatan Penninsula. Previous work uncovered a global layer of material that had melted and then hardened when the impact vaporized terrestrial rock. Robertson and his colleagues argue that superheated stuff was blasted from the crater into a suborbital path around Earth, generating a "heat pulse" upon re-entry.
"The kinetic energy of the ejected matter would have dissipated as heat in the upper atmosphere during re-entry, enough heat to make the normally blue sky turn red-hot for hours," Robertson said.
All unprotected creatures were "baked by the equivalent of a global oven set on broil."
Wow. Makes me wonder about God's indication in the book of Revelation that the world will not end with Water, but with Fire. Maybe this is not the first time this planet has seen judgement of one sort or another?
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