tailieunhanh - SOLAR SYSTEM

J upiter is by far the biggest planet in the solar system. It is a vast planet of swirling gases and storms of unimaginable fury. As the fifth planet out, it is the nearest gas giant, a planet made almost completely of gases, to the Sun. It is not much smaller than some of the stars called brown dwarfs. Jupiter does not shine itself, but reflects sunlight as all planets do. Even so, its huge pull of gravity holds more than 60 moons in orbit around it. Jupiter is named after the Roman king of the gods, also called Jove | School Specialty Publishing SOLAR SYSTEM 68 School Specialty n Publishing This edition published in the United States in 2006 by School Specialty Publishing a member of the School Specialty Family. Copyright ticktock Entertainment Ltd 2006 First published in Great Britain in 2006 by ticktock Media Ltd. Printed in China. All rights reserved. No part of this book may be reproduced stored in a central retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise withouth the prior written permission of the publisher. Written by Steve Parker. Library of Congress-in-Publication Data is on file with the publisher. Send all inquứies to School Specialty Publishing 8720 Orion Place Columbus OH 43240-2111 ISBN 0-7696-4259-4 123456789 10 TTM 11 10 09 08 07 06 2 CONTENTS HOW TO USE THIS BOOK__4 OUR HOME IN SPACE__6 The Solar System History of the solar system Our changing Views Some Space Units Orbits and Eccentricity Wrong Impressions EARLY ASTRONOMERS _8 Hipparchus of Rhodes Ptolemy of Alexandria Nicolaus Copernicus Tycho Brahe Johannes Kepler Astronomical discoveries timeline LATER Galileo Galilei Giovanni Domenico Cassini John Flamsteed Edmond Halley William Herschel Edwin Hubble Percival Lowell Steven Hawking Space Sciences Astronomical discoveries timeline THE SUN12 Where in the solar system Star Profile Structure and layers Flares and prominences Solar wind Photosphere Sunspots Sun timeline MERCURY14 Where in the solar system Planet profile Orbit details Surface conditions Major features Other geological features Small and curious Distinguishing features Temperature Spin Transit of Mercury Mercury timeline .