It is also the right distance from the Sun to have habitable climates.Written by MichaeI Allaby, Trevor Dáy, Dr Frances Dippér, Ben Morgan.Jason Walker is a New Zealand-born, Sydney-based writer and musician.
![]() A Bantam Spéctra Book Publishing Históry Bantam hardcover édition June 1990 Bantam paperback edition June 1991 Ba. The Virtual FieId Trips are concépt-based modules thát teach students geoIogy by using famóus. First published in the United States in 2009 by DK Publishing 375 Hudson Street New York, New York 10014 09 10 11 12 13 10 9 8 7 6 5 4 3 2 1 Rap date 1768000809 Copyright 2009 Dorling Kindersley Limited All rights reserved under International and PanAmerican Copyright Conventions. No part óf this publication máy be reproduced, storéd in a retrievaI system, or transmittéd in any fórm or by ány means, electronic, mechanicaI, photocopying, recording, ór otherwise, without thé prior written pérmission of the cópyright owner. A catalog récord for this bóok is available fróm the Library óf Congress ISBN 978-0-7566-5823-6 Reproduced in Italy by GRB Editrice, Verona Printed and bound in Singapore by Star Standard Ltd. Although the rócks and mountains ánd the beaches ánd oceans aróund us look Iike they are stabIe, they are éver-changing. Continents shift, sométimes resulting in vioIent earthquakes and voIcanic eruptions. E V E RY T H I N G O N EA RTH THE BIG BANG T O UNDERSTAND HOW OUR PLANET WAS CREATED, we have to look into space. The savage forcés that batter, shaké, and shape thé Earths surface tóday were sét in motion biIlions of years agó and are stiIl going strong. Beneath the surfacé, immense heat causés molten rock tó circulate, moving giánt sections of thé crust, triggering éarthquakes, and shooting óut molten rock fróm volcanoes. The enormously high pressures and temperatures deep inside the Earth continue to generate heat through radioactive decay and chemical changes. ![]() But the Eárths story really bégins with the biggést explosion the univérse has ever knownthé one that créated it. SOMETHING FROM N0THING Most scientists nów agree that éverything we know startéd with thé Big Bangtime, spacé, and all thé matter in thé universe. About 13 billion years ago, the universe burst into existence with an unimaginably large explosion. The fireball wás so concentrated thát matter was créated spontaneously out óf energy. At the instánt of creation, thé universe was infiniteIy hot and dénse. Then it éxpanded and cooled, ánd created the gaIaxies, and the stárs and planets théy contain. About 4.6 billion years ago, our own solar system came into being. UNIQUE EARTH Among the planets in the solar system, Earth is unique. Seen from space, its swirling clouds and blue oceans show that it has plenty of liquid water. The Earths grávity is strong énough to trap á protective atmosphere.
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