Discovery Channel
Fireballs from Space

http://dsc.discovery.com/tuneins/fireballs.html

This astronomical detective story takes an exhilarating ride aboard asteroids, comets and other celestial bodies that cross our orbit and, some say, threaten our very existence. From the meteor thought to have killed the dinosaurs 65 million years ago to the fiery comet Shoemaker-Levy 9 that plowed head-on into Jupiter, computer animation shows how these fireballs form and what happens when they explode in space or — the worst case scenario — hit solid ground. The program also profiles how space agencies are working to prevent a disastrous impact, and goes behind the scenes of a NASA project which, for the first time ever, orbited and landed a satellite on an asteroid.

From http://dsc.discovery.com/schedule/episode.jsp?episode=22911000

Hundreds of tons of space debris most of it microscopic size particles-- falls to earth every single day! But a fireball the size of a football field can land here too. An impact 65 million years ago appears to have ended the reign of the dinosaurs.

On Air (ET):

Oct 28 2001 6:00 PM
Oct 29 2001 9:00 PM
Oct 29 2001 1:00 AM
Nov 3 2001 3:00 PM