Astronomy Today, 9th Edition © 2018

• Instructors, contact your sales rep to ensure you have the most recent version of the course.
• Expanded: Study tools in the Mastering^® study area offer a wealth of learning tools with answer-specific feedback to help students master tough topics.
• New: Dynamic study modules, specific to astronomy today, are assignable modules that pose a series of question sets about a course topic with targeted feedback to help master key concepts.

• Prelecture reading questions and quizzes reinforce important astronomy concepts and ensure students read the textbook prior to lecture to keep them on track and engaged.
• Self-guided tutorials and interactive figures provide a deep understanding of the toughest topics in astronomy.
• Interactive prelecture videos, all written and most narrated by the authors, provide a subject overview with exposure to key concepts before class.
• Virtual astronomy labs are inquiry-based labs that use interactive figures and stellarium to conduct night sky data collection.
• Narrated figure visual activities are assignable with narrated animations that expand on figures in the program with embedded pause-and-respond questions.

• Narrated figure visual activities are assignable visual activities with narrated animations that expand on figures in the program with embedded pause-and-respond questions.

Eric Chaisson holds a Doctorate in Astrophysics from Harvard University, where he spent 10 years in the faculty of Arts and Sciences. For more than two decades thereafter, he served on the senior science staff at the Space Telescope Science Institute and held various professorships at Johns Hopkins and Tufts universities. He is now back at Harvard, where he teaches and conducts research at the Harvard-Smithsonian Center for Astrophysics. Eric has written 12 books on astronomy and has published nearly 200 scientific papers in professional journals.

Steve McMillan holds a Bachelor’s and Master’s Degree in Mathematics from Cambridge University and a Doctorate in Astronomy from Harvard University. He held postdoctoral positions at the University of Illinois and Northwestern University, where he continued his research in theoretical astrophysics, star clusters, and high-performance computing. Steve is currently Distinguished Professor of Physics at Drexel University and a frequent visiting researcher at Princeton’s Institute for Advanced Study and Leiden University. He has published more than 100 articles and scientific papers in professional journals.