Hogg Lecture: "Hunting For Doomsday Asteroids From Earth And Space"

Saturday, May 20, 2006

The 2006 Hogg lecture was delivered by Alan Hildebrand, University of Calgary on Saturday May 20, 2006 at the Minto Theatre at Carleton University.

More Than Raindrops May be Falling on Our Heads. You'd better think twice before you look up. That's the message that Dr. Alan Hildebrand, a geologist with the University of Calgary, will deliver when he speaks at Carleton University on Saturday, May 20 at 7:00 p.m. Dr. Hildebrand will talk about celestial objects that may fall to Earth and the role Canada is playing in discovering and identifying these objects. The event will be held in the Bell Canada Theatre of the Minto Building at Carleton.

Dr. Hildebrand uses Earth-based telescopes to search for these objects. He is best known as the first scientist to identify the crater that killed off the dinosaurs. In 1990, he discovered the Chicxulub crater buried under Mexico's Yucatan Peninsula and provided conclusive evidence of a celestial impact that caused the mass extinction of the dinosaurs.

Dr. Hildebrand was one of the main contributors to the theory that a comet impact off the Yucatan Peninsula 65 million years ago, and the resulting dramatic change in the ecosystem, killed off the dinosaurs.