Some 250 years later the Apollo 8 astronauts became the first humans to see the truth of this with their own eyes. It took the work of some bold and observant scientists, including the Polish astronomer Nicolaus Copernicus, to show us how wrong we had been: Instead of the center of the universe, Copernicus said, our world is one of many planets and moons circling the Sun in a celestial clockwork. It wasn t too long ago that we humans believed the Earth was the center of it all, that when we saw the Sun and stars parade across the sky, we were witnessing the universe revolving around us. The sky reminds us that things are not always as they seem. That is usually good advice, but it s especially valuable when it comes to the heavens. Cover photo composite Dennis di Cicco and Terence Dickinson ISBN Printed in Canada.ĥ CONTENTS Foreword Introduction Section 1 Astronomy Basics 1.1 The Night Sky Motions of the Earth The Solar System Section 2 Observational Advice 2.1 SkyWatching Co-ordinate Systems Section 3 Earth s Celestial Cycles 3.1 Rotation Revolution Precession Section 4 Our Solar System 4.1 The Moon Planets, Asteroids & Comets Section 5 Deep Space 5.1 Stars and Galaxies About the Constellations Highlights of the Constellations Conclusion Appendix A The Constellations Appendix B Properties of the Planets Glossary Indexħ FOREWORD If the sky could speak, it might tell us, Pay attention. , the logo, Starry Night, the Starry Night logo, and LiveSky are trademarks of, Inc. Toronto, ON M5A 1P4, Canada (416) Incorporated. ChaikinĤ To Barbara, with love Richmond St. 1 STARRY NIGHT COMPANION Go to Table of Contentsģ Starry Night Companion Your Guide to Understanding the Night Sky Using Starry Night Written by John Mosley Edited by Mike Parkes Foreword by Andrew L.
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