Asteroid Smut
Popular Science sez:Bring. It. On! Two hrs. is quick enough for me.“We’re in the realm where we might be essentially killing off everything within that first hour or two,” said Brandon Johnson, a Purdue University planetary scientist and study co-author.Chicxulub would have immediately wiped out all life within a wide radius of its impact along the Cretaceous–Paleogene boundary, the geological demarcation between the age of the dinosaurs and the Cenozoic era. Traveling at a rate of speed of about 12 miles-per-second, the asteroid struck Earth with the equivalent force of 100 teratons of TNT—more than one billion times the strength of the atomic blasts at Hiroshima and Nagasaki. The blast created a 62-mile-wide, 19-mile-deep cavity while generating two-mile-high tsunamis and 620 mph winds. Around 25 trillion metric tons of debris rocketed into the atmosphere, which then rained down on Earth as fiery missiles called spherules to set forests ablaze.








