Book excerpt: Discovering the Universe, Fifth Edition is one of the briefest texts available for an introductory astronomy course, while providing the wide range of factual topics that are the hallmark of the text and are consistent with most course needs. By flipping through the book, readers will find it as rich in celestial images and figures as other textbooks for the same audience. It is a balanced approach to content, depth, and breath, with effective teaching resources. It is also up-to-date, reflecting how our knowledge about the universe is expanding at a phenomenal rate.