comets

Provides information about comets, space objects made of frozen water, gases, and dust that orbit around the sun, and includes a word hunt and definitions.

Examines the physical characteristics and conditions of comets, asteroids, and meteorites, describing their position and movements in relation to the sun and planets and surveying humanity's attempts to penetrate their mysteries.

A photo essay of comets and meteors of the past with simple explanations of what comets and meteors are.

Explores the dangers that are floating through space, such as asteroids, space junk, and satellites, discussing where they came from and how scientists watch for them.

A brief description of asteroids, comets, and meteorites, what they look like and how they move.

Provides information on comets, asteroids, and meteors, explaining what they are, where they come from, and how they behave, and includes a fact file, glossary, and resources.

Text and illustrations explore comets, explaining what they are, how they look to us, when to watch for them, and more.

An introduction to asteroids and comets and the threats that impacts pose to Earth. Describes the history of major impacts and considers future threats.

Discusses how life on Earth has been influenced by comets and asteroids which have struck the earth.

Presents a children's book for early readers that describes comets, asteroids, and meteoroids.