From the pages of Killer Rocks from Outer Space: NASA's Deep Space I spacecraft took this image of comet Borrelly from a distance of 3,000 miles in 2001. Added color shows jets of gas around the comet's nucleus.

Gallery of Sight and Sound
Keeping an Eye on Space Rocks An audio-visual presentation from NASA's Jet Propulsion Laboratory.
Comets Through Time: Myths & Mystery A multimedia presentation.
Asteroids: Deadly Impact An educational game by National Geographic.
Deep Impact Videos Blasting a crater in Comet Tempel 1.

More Explosive Information
Earth Impact Effects An interactive web site for estimating the consequences of impact on Earth.
Around the World in 80 Craters An Interactive map of Earth's impact craters.
A Fireball in Mr. Meteor's Backyard Falling rocks captured on film.
Comet dust brought to Earth Video of Stardust capsule re-entry.
Bart's Comet A killer rock threatens the Simpsons.
Web site of Marianne Dyson. Marianne Dyson is an award-winning author and former NASA flight controller.
Children's author/science writer Conrad J. Storad Mr. Meteor's esteemed colleague.
Lerner Publishing Group The publisher of Killer Rocks from Outer Space.