Day from Hell May Have Killed Off Dinosaurs
`Creatures living near ground zero would have been vaporized immediately while those in the Caribbean area and southern United States would have drowned in 330-feet-high (100-meter) tsunamis when the asteroid impacted near today’s Gulf of Mexico shoreline at a speed of 33,750 mph (54,000 kph).
Then, a column of red-hot steam and dust soared thousands of miles into space and most of it fell back toward Earth within a few hours, turning the heavens into hell.’
