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"He had always been a problem-solver, a man who reflexively reacted to the unknown by breaking it into understandable pieces. Then Carl would carefully solve each small puzzle, confident that the sum of such microproblems would finally resolve the larger confusions." — Heart of the Comet
It is 2065, and a regular visitor makes its long-awaited dive toward the sun in a 75 year cycle. Only this time, Halley's Comet is met by an ambitious expedition, using the great fuming ball of gas, dust and ice as a natural spaceship to "hitch a ride" through the solar system. The scientific and commercial enterprise aims to herd the valuable object into a close orbit to Earth, for disassembly into resources to make the world rich again.
Only, nature and luck intervene. Soon a mysterious virus decimates the crew. Other life-forms, from a genetic heritage separated from ours by a billion years, begin a rough, sometimes deadly "negotiation" with the bodies of the human settlers, stoking stress between their already volatile factions. Conflicts explode as panicky orthos — unmodified humans — blame those expedition members who are genetically enhanced "Percells."
Against this background, the novel highlights a love triangle between ortho biologist Saul, who helped create the Percells, and Percell computer engineer Virginia (whose biologically-based computer just might possess genuine artificial intelligence)... and crewman Carl, whose steadfast courage might hold the key to survival.
And... perhaps... something far more than mere survival.
Heart of the Comet tells the story of an ambitious manned mission to visit the comet and alter its orbit in order to mine it for resources. The discoveries soon include a deadly viral lifeform that decimates the crew.
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After many years out of print, co-authors Gregory Benford and David Brin have revised and re-issued their bold novel about our near-future in space, when we plant our boots — and stake our destiny — on becoming the people of the comet.
Prescient and scientifically-accurate, Heart of the Comet was known as one of the great "hard sf" novels of the 1980s. The novel, first published in 1986, coincided with the last return visit of Comet Halley to Earth.
Here are some of the covers of Heart of the Comet's foreign and foreign-language publications.
Here are the covers of Heart of the Comet's Japanese edition.
"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."
"Heart of the Comet may well be the masterpiece of the (hard science) movement ... this book is what science fiction is."
"Better than Dune.... Tremendously imaginative ... a breathtaking effort from two of science fiction's brightest stars."
"This is hard science fiction at its best."
"A magnificent effort ... these two gifted authors have managed to tell a story that is as realistic, gritty, and profoundly moving as any within recent memory ... their story gets better, and better, and better."
"Heart of the Comet soars into uncharted territory ... an exciting tale of man's ability to cope and adapt in the face of overwhelming odds."
David Brin's science fiction novels have been New York Times Bestsellers, winning multiple Hugo, Nebula and other awards. At least a dozen have been translated into more than twenty languages. They range from bold and prophetic explorations of our near-future to Brin's Uplift series, envisioning galactic issues of sapience and destiny (and star-faring dolphins!). Learn More
Short stories and novellas have different rhythms and artistic flavor, and Brin's short stories and novellas, several of which earned Hugo and other awards, exploit that difference to explore a wider range of real and vividly speculative ideas. Many have been selected for anthologies and reprints, and most have been published in anthology form. Learn More
Since 2004, David Brin has maintained a blog about science, technology, science fiction, books, and the future — themes his science fiction and nonfiction writings continue to explore. Learn More
Who could've predicted that social media — indeed, all of our online society — would play such an important role in the 21st Century — restoring the voices of advisors and influencers! Lively and intelligent comments spill over onto Brin's social media pages. Learn More
David Brin's Ph.D in Physics from the University of California at San Diego (the lab of nobelist Hannes Alfven) followed a masters in optics and an undergraduate degree in astrophysics from Caltech. Every science show that depicts a comet now portrays the model developed in Brin's PhD research. Learn More
Brin's non-fiction book, The Transparent Society: Will Technology Force Us to Choose Between Freedom and Privacy?, continues to receive acclaim for its accuracy in predicting 21st Century concerns about online security, secrecy, accountability and privacy. Learn More
Brin speaks plausibly and entertainingly about trends in technology and society to audiences willing to confront the challenges that our rambunctious civilization will face in the decades ahead. He also talks about the field of science fiction, especially in relation to his own novels and stories. To date he has presented at more than 200 meetings, conferences, corporate retreats and other gatherings.Learn More
Brin advises corporations and governmental and private defense- and security-related agencies about information-age issues, scientific trends, future social and political trends, and education. Urban Developer Magazine named him one of four World's Best Futurists, and he was cited as one of the top 10 writers the AI elite follow. Past consultations include Google, Microsoft, Procter & Gamble, and many others. Learn More
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reviews and recommendations
"More than any writer I know, David Brin can take scary, important problems and turn them sideways, revealing wonderful opportunities. This talent shows strongly in Kiln People, a novel which is deep and insightful and often hilarious, all at the same time."
"Brin's canny sensitivity about the complexities of human nature transcends gender barriers in a novel that is not so much about 'women's issues' as the necessity for change and variability. As in Earth, the author demonstrates his ability to empathize with all his characters. This complex and gripping tale belongs in most libraries."
— Library Journal
"We very much appreciated your participation in our Partner/Principal Retreat in Tucson. Our group was very interested in what you had to say about both past and present, and as I observed our Principals downloading to our staff upon their return, it was apparent that your ideas about the future were both thought-provoking and stimulating."
"Brin expounds upon his belief that people need to keep watch on snooping governments, employers, insurance companies, and so on.... In assessing the current state of affairs, Brin divulges a barrage of ways and means of monitoring electronic transmissions."
He that leaveth nothing to chance
will do few things ill,
but he will do very few things.
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 billowing 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. Outcroppings 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.
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 blackness 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.
The spider began to collapse. Halley's ten-thousandth of a G was too weak to hold down a firing microwave generator, but without the upward kick of expanding gas and radiation pressure, the iceworld's own weak attraction asserted itself. The frame lurched and began its achingly slow fall.
— What the hell you doin'? My power's out. —
That would be Jeffers. Other voices babbled over the commline.
"Mayday! Kato's hurt." Carl shot across dirty-gray ice. His impulse jets fired with a quick, deft certainty as he flew, unconsciously moving with the least wasted energy, the result of years of training. Crossing the rumpled face of Halley was like sailing adroitly over a frozen, dusty sea beneath a black sky.
Against all hope, he tried calling to the figure in the orange spacesuit, splayed, face downward, on the gouged snowfield. "Kato...?"
When he approached, Carl found something that did not resemble a man nearly so much as a blackened, distorted, badly roasted chicken.
Umolanda was next.
The timetable didn't leave much room to mourn Kato. A med team came down from the flagship, the Edmund Halley, to retrieve Kato's body, but then it was back to work.
Carl had learned years before to work through unsettling news, accidents, foul-ups. Shrugging off a crewmate's death wasn't easy. He had liked Kato's energy, his quick humor and brassy confidence. Carl promised his friend's memory at least one good, thoroughly drunken memorial party.
He and Jeffers fixed the spider, reanchoring the foot and reflexing the leg. Carl cut away the damaged portion. Jeffers held the oxygen feed while he slapped a spindly girder segment into the opening. At Carl's signal, the other spacer played the gas jet over the seams and the metal leaped to life, self-welding in a brilliant orange arc. They had the repair done before Kato's body was back on the Edmund.
Umolanda came over the rim of Halley Core, pale blue jets driving her along the pole-to-pole cable. The easiest way to move around the irregular iceball was to clip onto the cable and fire suit jets, skimming a few meters above the surface. Magnetic anchors released automatically as you shot by, to minimize friction.
Umolanda was in charge of interior work, shaping irregular gouges into orderly tunnels and rooms. She met Carl near the entrance to Shaft 3, a kilometer from the accident site. The piledriving spider labored away again on the horizon.
— Pretty bad about Kato, — she sent.
"Yeah." Carl grimaced at the grisly memory. "Nice guy, even if he did play those old junk movies on the 3D all the time."
— At least it was quick. —
He didn't have anything to say to that, didn't like talking a whole lot out here anyway. It just interfered with the job.
Umolanda's liquid eyes studied him through a bubble helmet spattered with grime. The neck ring hid her cleft chin. He was surprised to see that this omission revealed her as an otherwise striking woman, her ebony skin stretched by high cheekbones into an artful, ironic cast. Funny, how he'd never noticed that.
— Did you investigate the cause? —
"I checked the area where the spider leg got loose," Carl answered. "Looked like a fault under it gave way."
She nodded. — Not surprising. I've been finding hollows below, formed when radioactive decay warmed the ice long ago, as Halley formed. If some hot gas from the spider's digging worked its way back to the surface through one of those hollows, it could undermine the spider's anchor. —
Carl squinted at the horizon, imagining the whole cometary head riddled with snaking tunnels. "Sounds about right."
— Shouldn't the spider have cut off as soon as it lost focus? —
— The switch? —
"Damn safety cutoff was defective. Just didn't kick in," Carl said sourly.
Her eyebrows knitted angrily. — More defective equipment! —
"Yeah. Some bastard Earthside made a little extra on the overhead."
— You've reported it? —
"Sure. It's a long walk back for replacement parts, though." He smiled sardonically. There was a brief silence before Umolanda spoke again.
— There will always be accidents. We lost people at Encke, too. —
"That doesn't make it any easier."
— No... I guess not. —
"Anyway, Encke was a pussycat of a comet. Old. Sucked dry. Lots of nice safe rock." He scuffed the surface softly with a boot tip. Snow and black dust puffed at the slightest touch.
She forced a grin. — Maybe all this ice is supposed to keep us alive over the long haul, but it's killing us in the short run. —
Carl gestured toward three mechs which stood nearby, waiting for orders. Already the machines were pitted and grimy from Halley's primordial slush. "That's your team. Kato was shaping them up. But you might want to give 'em a once-over, anyway."
— They look okay. — Umolanda whistled up the color-coded readout on the back of the nearest one and nodded. — Some luck here. The microwave beam didn't hit them. I'll take them down, put them to hollowing out Shaft Three. —
She tethered the boxy, multiarmed robots and gracefully towed them to the tunnel entrance. Carl watched her get them safely aligned and disappear down the shaft, leading the mechs like a shepherd, though in fact the mechs were as smart as a ten-year-old at some things, and a lot more coordinated.
He went on to check out more of the equipment that other crewmen were ferrying down from the Edmund. It was dull labor, but he had been working in the shafts for days and needed a break from the endless walls of rubble-seamed ice.
Overhead, gauzy streamers wove a slow, stately dance. Halley's twin shimmering tails were like blue-green silks. They were fading now, months past the brief summer crisping that came for the comet every seventy-six years. But still the banners of dust and ions unfurled, gossamer traceries waving as if before a lazy breeze, the flags of vast angels.
The expedition had elected to rendezvous with Halley's comet after its 2061 perihelion passage, when the streaking planetoid was well on its way outward again. Here, beyond the orbit of Mars, the sun's violent heating no longer boiled off the huge jets of water molecules, dust, and carbon dioxide that made Halley so spectacular during its short summer.
But heat lingers. For months, as Halley swooped by the fierce, eroding sun, temperature waves had been diffusing down through the ice and rock, concentrating in volatile vaults and scattered clumps of rock. Now, even as the comet lofted back into the cool darkness of the outer solar system, there were still reservoirs of warmth inside.
The gritty, dark potato shape was a frozen milkshake of water, carbon dioxide, hydrocarbons, and hydrogen cyanide, each snow subliming into vapor at a different temperature. Inevitably, in some spots, the seeping warmth melted or vaporized ices. These pockets lay waiting.
Carl was partway through assembling a chemical filter system when he heard a sharp high cry on suitcomm.
Then sudden, ominous silence.
His wrist display winked yellow-blue, yellow-blue; Umolanda's code.
Damn. Twice in one shift?
No answer. He caught the polar cable and went hand over hand toward the mouth of Shaft 3.
Mechs milled at a cave-in, digging at the slowly settling ice amid swirls of sparkling fog. No signal from Umolanda. He let the mechs work but popped pellet memories out of their backpacks to scan while he waited. It was soon apparent what had happened.
Deep in the ice, the mechs had dutifully chipped away at the walls of the first vault. Umolanda controlled them with a remote, staying in the main tunnel for safety. The TV relay told her when to sequence the robots over to a new routine, when to touch up details, when to bore and blast. She hung tethered, and monitored the portable readout board, occasionally switching over to full servoed control of a mech, to do a particularly adroit bit of polishing.
She had been working at the far end of what would soon be a storage bay when a mech struck a full-fledged boulder of dark native iron two meters across. Captain Cruz had asked them to watch out for usable resources. Umolanda put all three mechs to retrieving it. Under her guidance they slipped levers around the boulder and tried to pry it free. The sullen black chunk refused to budge.
Umolanda had to come in close to inspect. Carl could envision the trouble: mechs were good, but often it was hard to see whether they were getting the best angle.
Carl had a dark premonition. The boulder had been absorbing heat for weeks, letting it spread into a slush that lay immediately behind it, a pocket of confined carbon dioxide and methane. This frothy soup would be perched at its critical point, needing only a bit more temperature or a fraction less pressure to burst forth into the vapor phase.
Oh for chrissakes, Umolanda don't...
A mech slipped its levering rod around the boulder, penetrating into the reservoir of slush. Umolanda saw the robot lurch, recover. She told it to try again, and moved a little closer to observe.
The mech was slow, gingerly. Its aluminum jacket was spattered and discolored from several days in the ice, but its readouts showed it was in perfect running order. Using as its pivot its own tether in the wall, it levered around the boulder, lunged — and the iron gobbet popped free.
Release of pressure liberated the vaporization energy. The explosion drove the pry bar out of the mech's grip like a ramrod fired through the barrel of a cannon.
Umolanda was two meters away. The lever buried itself in her belly.
The pellet-memory readout terminated. Carl blinked away tears.
He waited while the mechs cleared the way. There was really no need to hurry.
Mission Commander Miguel Cruz called off operations for two full shifts. The setup crew had been working to the hilt for a week. Two deaths in one day implied that they were making errors from plain fatigue.
Umolanda's accident had spewed forth a pearly fog for an hour as the inner lake of slush boiled out. Had anyone Earthside been watching through a strong telescope, they could have detected a slight brightening at the cometary head. It was a fleeting memorial. The blinding storm had driven her mechs out into the shaft, dislodged enough ice to bury her. Carl and the others were kept outside until it was too late to recover her and freeze her down slowly for possible medical work. Umolanda was lost.
Carl came up on the last ferry. The mottled surface seemed to darken with distance: the cometary nucleus dwindled to a blackish dot swimming in a luminous orange-yellow cloud. Though the fuzzy haze of the coma was still visible with a small telescope from Earth, from near the head itself the shimmering curtains of ions were lacy, scarcely noticeable. Gas and grains of dust still steadily popped free of Halley's surface, making cargo piloting tricky. Most of the outgassing now came not from the sun's ebbing sting, but from the waste heat of humans.
As the ferry pulled outward the twin tails — one of dust and the other of fluorescing ions — stretched away, foreshortened pale remnants of the glories that had enthralled Earth only two months ago. Ragged streamers forked out toward Jupiter's glowing pinpoint. Oblivious, Carl stretched back and dozed while the ferry rose to meet the Edmund.
When they clanged into the lock, he peeled off his suit and coasted toward the murmuring gravity wheel at the bow. He climbed down one of the spoke ladders and stumbled out into the unfamiliar tug of one-eighth G, feeling bone-deep weariness descend with the coming of weight.
Sleep, yes, he thought. Let it knit up whatever raveled sleeve he had left.
Virginia came first, though. He hadn't seen her in ages.
She was in her working module, of course, halfway around the wheel. She seldom left the thing nowadays. The door hissed aside. When he slipped into the spherical world of encasing memory shells there was an almost cathedral-like hush, a sense of presence and humming activity just beyond hearing. He sat down quietly next to her cantilevered chair, waiting until she could extract from interactive mode. Tapped into channels through a direct neural link and wrist servos, she scarcely moved. She had to know he was there, but she gave no sign.
Her slim body occasionally fidgeted and jerked. Like a dog dreaming, he thought, and trying to run after imaginary rabbits.
Her long, half-Polynesian features were pointed toward the banks of holographic displays suspended above her, and her eyes never even flicked to the side to see him. She gazed raptly at multiple scenes of movement, sliding masses of ever-flickering data, geometric diagrams that shifted and evolved, telling new tales.
He waited as she worked through some indecipherable problem. Her long face momentarily tightened, then released as she leaped some hurdle. She had delicate, high cheekbones, too, like Umolanda. Like a third of the expedition's crew, the Percells, products of Simon Percell's program in genetic correcting of inherited diseases. Carl wondered idly if fineboned, aristocratic features were traits the DNA wizard had slipped in. It was possible; the man had been a genius. Carl's own face was broad and ordinary, though, and he had been "developed," as the antiseptic jargon had it, within a year of Virginia. So maybe Simon Percell had taken such care only with the women. Given the gaudy stories told about the man, he couldn't rule out the possibility.
By anyone's definition, Virginia Kaninamanu Herbert was clearly a successful experiment. A Hawaiian mixture of Pacific breeds, she had a swift, quirky intelligence, deliciously unpredictable. There was restless energy to her eyes as they moved in quick, darting glances at the myriad welter before her. Below, her mouth was a study in quiet immersion, slightly pursed, thoughtful and pensive. She was not, he supposed, particularly attractive in the usual sense of the term; her long face gave her a rangy look. The serene almond smoothness of her skin offset this, but her forehead was broad, the mouth too ample, her chin was stubbed and not fulsomely rounded as fashion these days demanded.
Carl didn't give a damn. There was a compressed verve in her, a hidden woman he longed to reach. Yet all the time he'd known her she had stayed inside her polite cocoon. She was friendly but little more. He was determined to change that.
On the main screen, obliquely turned girders filled together in precise sockets. The frame froze. Done.
Abruptly Virginia came alive, as though some fluid intelligence had returned from the labyrinths other machine counterpart. She stripped the wrist inputs. The white socket for her neural connector flashed briefly as the tap came off and she fluffed her hair into shape.
"Carl! I hoped you'd wait for me to finish."
"Oh, this?" She waved away the frames of data. "Just some cleanup work. Checking the simulations of docking and transfer, when we take everybody down. There'll be irregularities from random outgassing jets, and the slot boats will have to compensate. I was programming the smarter mechs for the job. We're ready now."
"It'll be a while."
"Well, a few more days... Oh, yes." She suddenly became subdued. "I heard."
"Damn bad luck." His mouth twisted sourly.
"Fatigue, I heard."
She reached out and touched his arm tentatively. "There was nothing you could do."
"Probably. Maybe I shouldn't have let her go down that hole right after Kato bought it. Thing like that, shakes you up, screws up your judgment. Makes accidents more likely."
"You weren't senior to her."
"Yeah, but —"
"It's not your fault. If anything, it's the constraints we work under. This timetable —"
"Yeah, I know."
"Come on. I'll buy you some coffee."
"Sleep's what I need."
"No, you need talk. Some people contact."
"Trading arcane jokes with that computer crowd of yours?" He grimaced. "I always come out sounding like a nerd."
She flexed smoothly out of her console couch, taking advantage of the low gravity to curl and unwind in midair. "Not at all!" Something in her sudden, bouncy gaiety lifted his heart. "Blithe spirit, nerd thou never wert."
"Mutilated Shelley! God, that's awful."
"True, though. Come on. First round is on me."