AstroTour animations, Interactive Simulations, and Astronomy in Action videos are all available from the free Student Site at the Digital Resources Site, and they are also integrated into assignable Smartwork exercises. digital.wwnorton.com/astro7.
Publishers Notice
Please note that this version of the ebook does not include access to any media or print supplements that are sold packaged with the printed book.
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Copyright 2022 by Stacy Palen and George Blumenthal.
Copyright 2019, 2016 by Laura Kay, Stacy Palen, and George Blumenthal.
Copyright 2013 by Laura Kay, Stacy Palen, Bradford Smith, and George Blumenthal.
Copyright 2010 by Jeff Hester, Bradford Smith, George Blumenthal, Laura Kay, and Howard G. Voss.
Copyright 2007 by Jeff Hester, David Burstein, George Blumenthal, Ronald Greeley, Bradford Smith, and Howard G. Voss.
Copyright 2002 by Jeff Hester, David Burstein, George Blumenthal, Ronald Greeley, Bradford Smith, Howard G. Voss, and Gary Wegner.
All rights reserved
EDITOR: Rob Bellinger
PROJECT EDITOR: Laura Dragonette
DEVELOPMENTAL EDITOR: John Murdzek
ASSISTANT EDITOR: Selin Tekgurler
MANAGING EDITOR, COLLEGE: Marian Johnson
MANAGING EDITOR, COLLEGE DIGITAL MEDIA: Kim Yi
PRODUCTION MANAGERS: Eric Pier-Hocking, Sean Mintus, and Richard Bretan
MEDIA EDITORS: Miryam Chandler and Meg Leary
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COLLEGE PERMISSIONS MANAGER: Bethany Salminen
PHOTO DEPARTMENT MANAGER: Stacey Stambaugh
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COMPOSITION: Graphic World
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Library of Congress Cataloging-in-Publication Data
Names: Palen, Stacy, author. | Blumenthal, George (George Ray), author.
Title: 21st century astronomy / Stacy Palen, Weber State University, George Blumenthal, University of CaliforniaSanta Cruz.
Other titles: Twenty-first century astronomy
Description: Seventh edition. | New York : W. W. Norton & Company, [2022] | Includes index.
Identifiers: LCCN 2021032451 | ISBN 9780393877021 (paperback) | ISBN 9780393877113 (epub)
Subjects: LCSH: AstronomyTextbooks. | LCGFT: Textbooks.
Classification: LCC QB45.2 .P35 2022 | DDC 520dc23
LC record available at https://lccn.loc.gov/2021032451
ISBN 978-0-393-53913-4 (pbk)
ISBN 978-0-393-87711-3 (ebook)
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Ebook version: 7.1-retailer
Stacy Palen thanks everyone at Bellwether Farm for their support during this project that spanned the challenges of the COVID-19 pandemic.
George Blumenthal gratefully thanks his wife, Kelly Weisberg, and his children, Aaron and Sarah Blumenthal, for their support during this project. He also wants to thank Professor Robert Greenler for stimulating his interest in all things related to physics.
BRIEF CONTENTS
- Part I Introduction to Astronomy
- Part II The Solar System
- Part III Stars and Stellar Evolution
- Part IV Galaxies, the Universe, and Cosmology
CONTENTS
- PART I INTRODUCTION TO ASTRONOMY
- PART II THE SOLAR SYSTEM
- PART III STARS AND STELLAR EVOLUTION
- PART IV GALAXIES, THE UNIVERSE, AND COSMOLOGY
PREFACE
Dear Student,
Why is it a good idea to take a science course, and in particular, why is astronomy a course worth taking? Many people choose to learn about astronomy because they are curious about the universe. Your instructor likely has two basic goals in mind for you as you take this course. The first is to understand some basic physical concepts and how they apply to the universe around us. The second is to think like a scientist and learn to use the scientific method not only to answer questions in this course but also to be able to evaluate and understand new information you encounter in your life. We have written the Seventh Edition of