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Heart of the Comet by David Brin and Gregory Benford David Brin Is The Tran DF sfo P rm Y e Y r B 2 B . 0 A Click here to buy w w m w co .A B BYY. Heart of the Comet by David Brin and Gregory Benford David Brin is the Hugo and Nebula award-winning author of ten novels, including the acclaimed Uplift series, and two collections of short stories. He has a doctorate in astrophysics, and has been a consultant to NASA and a graduate level physics professor. He lives in California. Gregory Benford's novels include In the Ocean of Night, Sailing Bright Eternity and Timescape, which won the Nebula Award, the British Science Fiction Award and the John W. Campbell Memorial Award. He is a professor of physics at the University of California, and has served as an adviser to the Department of Energy, NASA, and the White House Council of Space Policy. He lives in California. Praise for Heart of the Comet: 'A literary conjunction of two of the brightest stars in the science-fiction firmament. In Heart of the Comet, we have it all, the techno-props and accurate physics and biology of John W. Campbell, the heroic battles with outrageous monsters of Robert E. Howard, the insights into seething human perversity of J.G. Ballard and Thomas M. Disch, the characterizational depth of Theodore Sturgeon, all of it wrapped in a scientifically plausible and entertaining package that should not be missed. Heart of the Comet should be on everyone's award ballot' Los Angeles Times 'A magnificent effort . their story gets better, and better, and better' Locus 'Tremendously imaginative . a breathtaking effort from two of science fiction's brightest stars' The San Diego Union Also by David Brin THE PRACTICE EFFECT Tran DF sfo P rm Y e Y r B 2 B . 0 A Click here to buy w w m w co .A B BYY. THE POSTMAN THE RIVER OF TIME EARTH GLORY SEASON OTHERNESS The Uplift Books SUNDIVER STARTIDE RISING THE UPLIFT WAR BRIGHTNESS REEF Also by Gregory Benford FOUNDATION's FEAR Heart of the Comet Gregory Benford and David Brin An Orbit Book First published by Bantam Books in 1986 This edition published by Orbit in 1997 Copyright (c) 1986 by David Brin and Abbenford Associates Grateful acknowledgment is made for permission to reprint lines from the poem "Epilogue" by Edgar Lee Masters from the Spoon River Anthology. Copyright 1915, 1916, 1942, 1944 by Edgar Lee Masters. Used by permission of the Macmillan Publishing Company. All Rights Reserved. Inside illustrations by April Abrarns and David Perry The moral right of the authors has been asserted. Tran DF sfo P rm Y e Y r B 2 B . 0 A Click here to buy w w m w co .A B BYY. All characters in this publication ore fictitious and any resemblance to real person, living or dead, is purely coincidental. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, without the prior permission in writing of the publisher, nor be otherwise circulated in any form of binding or cover other than that in which it is published and without a similar condition including this condition being imposed on the subsequent purchaser. A CIP catalogue record for this book is available from the British Library. ISBN 1 85723 436 7 Printed and bound in Great Britain by Clays Ltd, St Ives. plc Orbit A Division of Little, Brown and Company (UK) Brettenham House Lancaster Place London WC2E 7EN To Poul and Robert Greg and Carolyn Larry and Jerry Charles and Harry and John and all the rest who do it the hard way. ACKNOWLEDGMENTS This novel was written on the basis of the best information available at the time concerning comets in general, and Halley's Comet in particular. It was created in the awareness (and hope) that the successful 1986 Halley probes and International Halley Watch would vastly multiply our knowledge of these fascinating leftovers of creation. If some of this new information turns out to invalidate a few premises of our story, we hope at least that the reader will Tran DF sfo P rm Y e Y r B 2 B . 0 A Click here to buy w w m w co .A B BYY. credit us with daring. We felt we had to tell this story now, to honor an interplanetary envoy whose visits are so well timed to once in a human span. The authors would like to thank those experts who were of assistance, including Professors Mike Gaffey, John Lewis, John Cramer, Bert King, and Karl Johannson, as well as Dr. Ray Newburn of JPL and Dr. Eric Jones of Los Alamos Labs. Dr. Donald Yeomans of JPL and Dr. Neal Hulkower of TRW Inc. helped with orbital mechanics. We would also like to thank Anita Everson, Joan Abbe, Richard Curtis, Sue Roberts, Dan Spadoni, Nancy Grace, William Lomax, Bonnie Graham, April Abrams and Diane Brizolara. Karen and Poul Anderson and Astrid and Greg Bear, were most gracious, also. Dr. Louis D'Amario and Dr. Dennis Brynes of the Jet Propulsion Laboratory helped drive the plot with their wonderful calculations of planetary encounters. Each of them gets a dinner and a bottle. And, as always, Lou Aronica of Bantam Books was understanding of the needs of authors laboring under "astronomical" deadlines. We will be many things, in the future. But there will never cease to be a need for courage. -David Brin and Gregory Benford September 1985 PART 1 BANNERS OF THE ANGELS October 2061 He that leaveth nothing to chance will do few things ill, but he will do very few things. -Halifax Tran DF sfo P rm Y e Y r B 2 B . 0 A Click here to buy w w m w co .A B BYY. [Insert Comet-1 Pic] CARL Kato died first. He had been tending the construction mechs - robots that were deploying girders on the thick black dust that overlay the comet ice. From Carl's viewpoint, on a rise a kilometer away, Kato's suit was a blob of orange amid the hulking gray worker drones. There was no sound, in spite of the clouds of dust and gas that puffed outward near man and machines. Only a little static interfered with a Vivaldi that helped Carl concentrate on his work. Carl happened to be looking up, just before it happened. Not far from Kato, anchored near the north pole of the comet's solid core, eight spindly spires came together to form a pyramidal tower. At its peak nestled the microwave borer antenna, an upside-down cup. Kato worked a hundred meters away, oblivious to the furious power lancing into the ice nearby. Carl had often thought the borer looked like a grotesque, squatting spider. From the hole beneath it came regular gushes of superheated steam. As if patiently digging after prey, the spider spat invisible microwaves down the shaft in five-second bursts. Moments after each blast, an answering yellow-blue jet of heated gas shot up from the hole below, rushing out of the newly carved tunnel. The bellowing steam jet struck deflector plates and parted into six plumes, fanning outward, safely missing the microwave pod. The borer had been doing that for days, patiently hammering tunnels into the comet core, using bolts of centimeter-wavelength electromagnetic waves, tuned to a frequency that would strip apart carbon dioxide molecules. Carl felt a faint tremor in his feet each time a bolt blazed forth. The horizon of ancient dark ice curved away in all directions. Out-croppings of pure clathrate snow here and there jutted out through thick layers of spongy dust. It was a scene of faded white against mottled browns and deep, light- absorbing black. Kato and his mechs worked near the microwave borer, drifting on tethers just above the surface. The core's feeble gravity was not enough to hold them down when they moved. Overhead, thin streamers of ionized, fluorescing gas swayed against hard black night, seeming to caress the Japanese spacer. Kato supervised as his steel-and-ceramic robot mechanicals did the dangerous work. He had his back to the spider. Carl was about to turn back to his own task. The borer chugged away methodically, turning ice to steam. Then one of the giant spider legs popped free in a silent puff of snow. Tran DF sfo P rm Y e Y r B 2 B . 0 A Click here to buy w w m w co .A B BYY. Carl blinked. The microwave generator kept blasting away as the leg flew loose of its anchor, angling up, tilting the body. He did not have time to be horrified. The beam swept across Kato for only a second. That was enough. Carl saw Kato make a jerky turn as if to flee. Later, he realized that the movement must have been a final, agonized seizure. The beam blasted the ice below the man, sending luminous sheets of orange and yellow gas pouring into the darkness above, driving billows of dust. Vivaldi vanished under a roar of static. The invisible beam traced a lashing, searing path. It jittered, waved, then tilted further. Away from the horizon. Toward Carl. He fumbled for his control console, popped the safety cover, and repeatedly stabbed the countermand switch. His ears popped as the static storm cut off. Every mech and high-power device on this side of Halley Core shut down. The microwave finger ceased to write on the ice only a few score meters short of Carl.
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