Our Place in the Universe我们身处宇宙中的位置.pdf

OUR PLACE I N T H E u N I V E R S E Norman k. Glendenning Lawrence Berkeley National Laboratiry World scientific Imperial College Press Published by Imperial College Press 57 Shelton Street Covent Garden London WC2H 9HE and World Scientific Publishing Co. Pte. Ltd. 5 Toh Tuck Link, Singapore 596224 USA office: 27 Warren Street, Suite 401-402, Hackensack, NJ 07601 UK office: 57 Shelton Street, Covent Garden, London WC2H 9HE Library of Congress Cataloging-in-Publication Data Glendenning, Norman K. Our place in the universe / Norman K. Glendenning. p. cm. Includes bibliographical references and index. ISBN-13 978-981-270-068-1 -- ISBN-10 981-270-068-4 ISBN-13 978-981-270-069-8 (pbk) -- ISBN-10 981-270-069-2 (pbk) 1. Cosmology. 2. Galaxies--Formation. 3. Galaxies--Evolution. 4. Astrophysics. 5. Solar system--Origin. I. Title. QB981 .G585 2007 523.1--dc22 British Library Cataloguing-in-Publication Data A catalogue record for this book is available from the British Library. Cover picture: The Horsehead is a reflection nebula; it is located in the much larger Orion Nebula, an immense molecular cloud of primordial hydrogen and helium, together dust cast off by the surfaces of stars. The clouds that form the Horsehead are illuminated from behind by a stellar nursery of young bright stars. Credit: Photo taken at Mauna Kea, Hawaii with the Canada-France-Hawaii Telescope. Copyright © 2007 by Imperial College Press and World Scientific Publishing Co. Pte. Ltd. All rights reserved. This book, or parts thereof, may not be reproduced in any form or by any means, electronic or mechanical, including photocopying, recording or any information storage and retrieval system now known or to be invented, without written permissio