Asteroid Impact That Killed the Dinosaurs: New Evidence

by Charles Choi

The idea that a cosmic impact ended the age of dinosaurs in what is now Mexico now has fresh new support, researchers say.

The most recent and most familiar mass extinction is the one that finished the reign of the dinosaurs — the end-Cretaceous or Cretaceous-Tertiary extinction event, often known as K-T. The only survivors among the dinosaurs are the birds.

Currently, the main suspect behind this catastrophe is a cosmic impact from an asteroid or comet, an idea first proposed by physicist Luis Alvarez and his son geologist Walter Alvarez. Scientists later found that signs of this collision seemed evident near the town of Chicxulub (CHEEK-sheh-loob) in Mexico in the form of a gargantuan crater more than 110 miles (180 kilometers) wide. The explosion, likely caused by an object about 6 miles (10 km) across, would have released as much energy as 100 trillion tons of TNT, more than a billion times more than the atom bombs that destroyed Hiroshima and Nagasaki…

(read more: Live Science)              

(images: Illustration by Don Davis; photo by Paule Renne)

  1. bwansen reblogged this from elfboi
  2. tandykyne reblogged this from rhamphotheca
  3. elfboi reblogged this from climate-changing
  4. offlie reblogged this from rhamphotheca
  5. creamocrop reblogged this from rhamphotheca
  6. climate-changing reblogged this from rhamphotheca
  7. artofscience01 reblogged this from rhamphotheca
  8. nela59 reblogged this from rhamphotheca
  9. matthiaskassil reblogged this from rhamphotheca
  10. irishteacosy reblogged this from rhamphotheca
  11. fabuluxlishusness reblogged this from rhamphotheca
  12. ultr4viol3tnim reblogged this from rhamphotheca
  13. codeawayhaley reblogged this from rhamphotheca
  14. michaelquickkkk reblogged this from devinnn445
  15. outerlimits reblogged this from thesantimountain