ABOUT THE AUTHOR
Liz Kruesi found her love of astronomy at a young age, during family trips to the Adirondack
Mountains. She studied physics and astrophysics in college and graduate school, and her
writing has appeared in
Astronomy
,
Discover
,
Popular Science,
and other publications.
Copyright © by Focus Readers, Lake Elmo, MN . All rights reserved. No part
of this book may be reproduced or utilized in any form or by any means without written
permission from the publisher.
Focus Readers is distributed by North Star Editions:
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Produced for Focus Readers by Red Line Editorial.
Content Consultant: James Flaten, Associate Director of NASA’s MN Space Grant Consortium
and Contract Associate Professor, Aerospace Engineering and Mechanics Department,
University of Minnesota–Twin Cities
Photographs ©: Dotted Yeti/Shutterstock Images, cover, ; ESA/C. Carreau/JPL/NASA, –;
JPL-Caltech/NASA, , –, , –, , ; JSC/NASA, ; JPL-Caltech/Ball Aerospace/
NASA, ; NASA Ames, ; A. Feild (STScI)/ESA/NASA, ; NASA, ; Harvard-Smithsonian
Center for Astrophysics/David Aguilar/JPL/NASA, –; ESA/STScI/G. Bacon/JPL/NASA,
; Space Science Institute/JPL/NASA, –; JPL/NASA, ; JPL-Caltech/ASI/USGS/NASA,
; ESA/Hubble & NASA, ¢–; ESO/M. Kornmesser, ; G. Bacon/STScI/ESA/NASA,
–; Goddard Space Flight Center/Conceptual Image Lab/JPL/NASA,
ISBN
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Library of Congress Control Number:
Printed in the United States of America
Mankato, MN
November,
