Built specifically for students studying introductory astronomy, Voyager: SkyGazer, College Edition v4.0 combines exceptional planetarium software with informative pre-packaged tutorials. Based on the popular Voyager software, this dual-platform CD-ROM is included at no additional charge with all new copies of this textbook. You'll find recommended SkyGazer activities at the end of each chapter in the text and in the Astronomy Media Workbook.