Sarah, ten years old in 1910, finds much to enjoy in her family's adventure-filled life on the American prairie, despite fears that the appearance of Halley's comet may signal the end of the world.
Describes the characteristics of various types of comets and their relationship to Earth with specific emphasis on Halley's comet, its appearances throughout history, and the preparations for its return in early 1986. Includes a glossary of terms.
Describes the discovery of Halley's comet and its historic significance. Also briefly discusses what is known of the composition of comets and their relationship to earth.
Explains the nature of comets, what is known about Halley's comet, and various countries' plans to study it in 1985 and 1986. Makes suggestions for maximum viewing enjoyment.
