Discovering the universe (4th ed)

This edition contains several different features including: a greater emphasis on stars and galaxies; treatment of the planets one at a time for greater clarity; completely rewritten chapter introductions; "What Do You Think" questions that open each chapter and address specific common student misconceptions; new key-term chapter-ending lists; improved pedagogy including "Foundations" part openers and "Astronomer's Toolboxes"; and a new CD-ROM with full text and art plus new graphics, animations, historical timelines, interviews with prominent astronomers and skychart software.