Color Overheads Included! The material in this book deals with basic concepts from the modern study of planetary and astronomical sciences. Objects in our solar system and in outer space are studied and compared. Each of the twelve teaching units in this book is introduced by a color transparency, which emphasizes the basic concept of the unit and presents questions for discussion. Reproducible student pages provide reinforcement and follow-up activities. The teaching guide offers descriptions of the basic concepts to be presented, background information, suggestions for enrichment activities, and a complete answer key.