Astronomy ESP
This extraordinary CD-ROM, organized by topic, provides your students with animations and movies, additional essays, help with math problems, and flashcards and crossword puzzles. There is also a direct link to the Internet On-line Learning Center.

NetTutor
Students can get help virtually anytime they need it either via live interaction with a tutor or by e-mailing questions. Explaining problems that involve formulas and scientific symbols is not a problem with the white-board technology used with NetTutor.

6 New Interactives.
Each Interactive (on the OLC and CD)will allow students to manipulate parameters and gain a better understanding of topics such as Blackbody Radiation, The Bohr Model, Retrograde Motion, Cosmology, Solar System Builder and the H-R Diagram by watching the effect of these manipulations.

New formulas and equations, presented as boxed features, so that the math and physics involved in astronomy are not ignored but made accessible through careful explanations and examples.

Chapter Introduction
Every chapter begins with an introduction designed to give the historical and scientific setting for the chapter material. The overview previews the chapter's contents and what you can expect to learn from reading the chapter. After reading the introduction, browse through the chapter, paying particular attention to the topic headings and illustrations so that you get a feel for the kinds of ideas included within the chapter. Also included in the chapter introduction is a list of questions to consider while reading the text.

Historical Fact Boxes
Throughout the book the historical development of astronomy has been emphasized to show that astronomy, like other sciences, advances through the efforts of many scientists and to show how our present ideas developed. In the main body of the text there are many comparisons of what was once known about a particular phenomenon to what we now know about it. These historical comparisons are used to illustrate the cycle of observation, hypothesis, and further observation, which is the essence of the scientific method of discovery.

Worked Examples Boxes
This book presumes that most of its readers are not science majors and that they probably have not had a college-level science or mathematics course. The book provides a complete description of current astronomical knowledge, neither at an extremely technical level nor at a level that fails to communicate the quantitative nature of physical science. Equations are used where they are relevant but follow the equations with boxes containing one or more worked examples. The examples in the boxes show how and when to use each equation and tell why the equation is important.

End of Chapter Material
Chapter Summary: The summary highlights the key elements of the chapter. Key Terms: Terms are defined in context and found in the glossary. Conceptual Questions: The Conceptual Questions require qualitative verbal answers. Problems: The reader's mastery of the equations can be tested by the Problems at the end of each chapter. The problems require numerical calculations. Figure-Based Questions: The Figure-Based Questions require the reader to extract the answer from a particular graph or figure in the chapter. Further Readings: This section directs readers to additional reference material.

End-of-Text Material
At the back of the text you will find appendices that will give you additional background details, charts, and extensive tables. There is also a glossary of all key terms, an index organized alphabetically by subject matter, and a look at the constellations printed on the inside covers for reference use.

Online Learning Center
For Instructors: This text-specific web site includes the fully downloadable Instructor's Manual/Test Item File, a powerpoint presentation of figures from the text that can be integrated into your own lecture, web links, an Ask the Author message board, and many other features. Additionally, instructors can gain access to the Online Learning Center which contains many other features that can be pulled into PageOut, McGraw-Hill's solution for helping instructors create their own web pages. PageOut offers a series of templates. Simply fill them with your course information and click on one of 16 designs. The process takes under an hour and leaves you with a professionally designed Web site. PageOut is so easy and intuitive, it's little wonder why over 5,000 of your colleagues are using it. For Students: Students can use our web site to study! It contains scorable practice quizzes, crossword puzzles using key terms and definitions from the text, as well as a career center and web links. Accessing the Online Learning Center will allow the student to use flashcards, take additional self-assessment quizzes, and utilize the online glossary. For students wanting additional help, they can post a message to the "Ask the Author" message board, which is mediated by the author. Check it out today-new features are always being added.

PowerWeb - Astronomy
Benefit: This online resource provides high-quality, peer-reviewed content including up-to-date articles from leading periodicals and journals, current news, weekly updates with assessment, interactive exercises, a Web research guide, study tips, and much more!