The science guy presents information about the origins, composition, and appearances of comets, meteors and asteroids. Describes the physical characteristics of comets and meteors, illustrating their elliptical orbits around the sun. Explains how a comet's tail is formed and reveals how meterorites contain valuable information about outer space. Presents theories about comet collisions with Earth and visits Meteor Crater in Arizona to reveal the impact of a meteor that collided with the earth.

Award-winning series explores the world of science and nature using humor, music, experiments, and interviews with scientists. DVD features fully indexed chapters correlated to national science standards, downloadable teacher's guide, interactive glossary and quiz, Internet links, and bonus materials.