Visit Your Local PBS Station PBS Home PBS Home Programs A-Z TV Schedules Watch Video Donate Shop PBS Search PBS
Search NOVA Teachers

Back to Teachers Home

Doomsday Asteroid, The

Program Overview


What would happen if an asteroid the size of a mountain crashed into the surface of the Earth? Many astronomers believe that an enormous asteroid crashed into the Earth 65 million years ago, causing such destruction that at least two-thirds of all species on the planet-including dinosaurs-became extinct. Although such large collisions are extremely rare, thousands of small pieces of material from outer space land on Earth each year. This episode of NOVA investigates the rocky material that circulates in the solar system—comets and asteroids—and considers the likelihood of such an object striking our planet.

Teacher's Guide
Doomsday Asteroid, The
PROGRAM OVERVIEW VIEWING IDEAS CLASSROOM ACTIVITY IDEAS FROM TEACHERS RELATED NOVA RESOURCES INTERACTIVE FOR STUDENTS
   

Support provided by