Norman Sperling, a northern California freelance, has taught introductory astronomy to thousands of college students. This book was written as a supplement to conventional astronomy textbooks. The book flags out-dated paradigms, clarifies astronomy's confusing terminology (especially its oxymorons), presents perspectives that most texts leave out, provides supplemental information to help students, suggests fresh term-paper topics for students to research, and is laced with boners committed by Sperling's least-attentive students.