Presents information on the different types of celestial matter known as asteroids, comets, and meteors and on what scientists learned from the impact of a comet on the surface of Jupiter.
Presents an investigation of comets, asteroids, and meteoroids and meteors, discussing what they are, what they are made from, where they orbit, and their impact on the Earth. Includes a glossary and resources for further study.
Describes what meteors and micrometeors are, and describes the different types of meteorites, including lunar and martian meteorites, and how meteorites form craters.
Provides an introduction to comets, covering where they come from, how they travel, their importance to astronomers, as well as their relationship to meteor showers.