“The asteroid itself was so large that, even at the moment of impact, the top of it might have still towered more than a mile above the cruising altitude of a 747,” writes Peter Brannen in Ends of the World about the Chicxulub impact. “In its nearly instantaneous descent, it compressed the air below … Continue reading “Impact” -The Asteroid That Towered a Mile Above the Cruising Altitude of a 747