Black Hole This page intentionally left blank B L AC K H O L E H OW A N I D E A A B A N D O N E D BY N E W TO N I A N S , H AT E D BY E I N S T E I N , A N D G A M B L E D O N BY H AW K I N G B E C A M E LOV E D M A R C I A B A R T U S I A K New Haven & London Copyright © 2015 by Marcia Bartusiak. All rights reserved. This book may not be reproduced, in whole or in part, including illustrations, in any form (beyond that copying permitted by Sections 107 and 108 of the US Copyright Law and except by reviewers for the public press), without written permission from the publishers. Yale University Press books may be purchased in quantity for educational, business, or promotional use. For information, please e- mail sales.press@ yale.edu (US offi ce) or [email protected] (UK offi ce). Printed in the United States of America. Library of Congress Cataloging-in-Publication Data Bartusiak, Marcia, 1950– Black hole: how an idea abandoned by Newtonians, hated by Einstein, and gambled on by Hawking became loved / Marcia Bartusiak. pages cm. Includes bibliographical references and index. ISBN 978-0-300-21085-9 (clothbound : alk. paper) 1. Black holes (Astronomy). 2. Discoveries in science. 3. Science—Social aspects. I. Title. QB843.B55B37 2015 523.8'875—dc23 2014038950 A catalogue record for this book is available from the British Library. This paper meets the requirements of ANSI/NISO Z39.48–1992 (Permanence of Paper). 10 9 8 7 6 5 4 3 2 1 Dedicated to my students, past and present, in the Graduate Program in Science Writing at the Massachusetts Institute of Technology, who daily inspire me This page intentionally left blank Contents Preface ix 1 It Is Therefore Possible That the Largest Luminous 1 Bodies in the Universe May Be Invisible 2 16 Newton, Forgive Me 3 One Would Then Find Oneself . . . in a Geometrical 35 Fairyland 4 There Should Be a Law of Nature to Prevent a Star from 44 Behaving in This Absurd Way! 5 60 I’ll Show Those Bastards 6 70 Only Its Gravitational Field Persists 7 I Could Not Have Picked a More Exciting Time in 87 Which to Become a Physicist 8 110 It Was the Weirdest Spectrum I’d Ever Seen 9 122 Why Don’t You Call It a Black Hole? 10 142 Medieval Torture Rack 11 Whereas Stephen Hawking Has Such a Large Investment in General Relativity and Black Holes 148 and Desires an Insurance Policy CONTENTS 12 163 Black Holes Ain’t So Black 175 Epilogue 183 Timeline 189 Notes 209 Bibliography 224 Acknowledgments 227 Index viii Preface The very notion of a black hole is so alluring. It combines the thrill of the unknown with a sense of lurking danger and abandon. To imagine a journey to a black hole’s outer boundary is like approaching the precipice of Niagara Falls, contemplating the vertical plunge to the churning waters below, yet remaining secure in the knowledge that we’re positioned behind a sturdy fence to keep us from peril. Even in the real world, we know we’re safe, as the closest black holes to Earth are thankfully hundreds of light- years distant. So, we experi- ence the dark, celestial adventure vicariously. For any astrophysicist at a cocktail party, it’s the cosmic object they’re most likely to be asked about. And for good reason: a black hole is wackily weird. As noted black-h ole expert and Caltech theorist Kip Thorne has written, “Like unicorns and gargoyles, black holes seem more at home in the realms of science fi ction and ancient myth than in the real Universe.” University of Texas astrophysicist J. Craig Wheeler calls them a cultural icon. “Nearly everyone understands the symbolism of black holes as yawning maws that swallow everything and let nothing out,” he says. And it was the same stark and alien weirdness, now celebrated, that kept physicists from accepting black holes for decades on end. According to a famous saying, often quoted, “All truth passes through ix
Description: