. . . . . . "Juvenile works" . "Juvenile works"@en . . "Let's explore comets and asteroids" . "Let's explore comets and asteroids"@en . . "Explains what asteroids and comets are made of and where they come from, describes impacts with Earth, and discusses the history of scientific research into them."@en . . . . . "Let us explore comets and asteroids"@en . "This series will ignite young readers' interest in science by presenting facts about our solar system in a dynamic and colorful format. The latest information and diagrams on the status of Pluto and other objects in our solar system are included." . .