Дэн Симмонс - Orphans of the Helix

At the Spectrum Helix engineers’ request, the Aeneans had rebuilt the Helix to be truly modular. When it reached its Utopian planet around its perfect star, sections would free themselves to become probes and aircraft and landers and submersibles and space stations. Each of the three thousand individual life pods could land and begin a colony on its own, although the plans were to cluster the landing sites carefully after much study of the new world. By the time the Helix was finished deploying and landing its pods and modules and probes and shuttles and command deck and central fusion core, little would be left in orbit except the huge Hawking drive units with maintenance programs and robots to keep them in perfect condition for centuries, if not millennia.

“We’ll take the system exploratory probe to investigate this Destroyer,” said Dem Lia. It was one of the smaller modules, adapted more to pure vacuum than to atmospheric entry, although it was capable of some morphing. But compared to most of the Helix’s peaceful subcomponents the probe was armed to the teeth.

“May we accompany you?” said Chief Branchman Keel Redt. “None of our race has come closer than a hundred thousand kilometers to the machine and lived.”

“By all means,” said Dem Lia. “The probe’s large enough to hold thirty or forty of us, and only three are going from our ship. We will keep the internal containment field at one-tenth gee and adapt the seating accordingly.”

The probe was more like one of the old combat torchships than anything else, and it accelerated out toward the advancing machine under 250 gravities, internal containment fields on infinite redundancy, external fields raised to their maximum of class twelve. Dem Lia was piloting. Den Soa was attempting to communicate with the gigantic ship via every means available, sending messages of peace on every band from primitive radio to modulated tachyon bursts. There was no response. Patek Georg Dem Mio was meshed into the defense/counterattack virtual umbilicals of his couch. The passengers sat at the rear of the probe’s compact command deck and watched. Saigyô had decided to accompany them, and his massive holo sat bare-chested and cross-legged on a counter near the main viewport. Dem Lia made sure to keep their trajectory aimed not directly at the monstrosity, in the probability that it had simple meteor defenses: if they kept traveling toward their current coordinates, they would miss the ship by tens of thousands of kilometers above the plane of the ecliptic.

“Its radar has begun tracking us,” said Patek Georg when they were six hundred thousand klicks away and decelerating nicely. “Passive radar. No weapons acquisition. It doesn’t seem to be probing us with anything except simple radar. It will have no idea if life-forms are aboard our probe or not.”

Dem Lia nodded. “Saigyô,” she said softly, “at two hundred thousand klicks, please bring our coordinates around so that we will be on intercept course with the thing.” The chubby monk nodded.

Somewhat later, the probe’s thrusters and main engines changed tune, the starfield rotated, and the image of the huge machine filled the main window. The view was magnified as if they were only five hundred klicks from the spacecraft. The thing was indescribably ungainly, built only for vacuum, fronted with metal teeth and rotating blades built into mandible-like housings, the rest looking like the wreckage of an old space habitat that had been mindlessly added onto for millennium after millennium and then covered with warts, wattles, bulbous sacs, tumors, and filaments.

“Distance, one hundred eighty-three thousand klicks and closing,” said Patek Georg.

“Look how blackened it is,” whispered Den Soa.

“And worn,” radioed Far Rider. “None of our people have ever seen it from this close. Look at the layers of cratering through the heavy carbon deposits. It is like an ancient, black moon that has been struck again and again by tiny meteorites.”

“Repaired, though,” commented the Chief Branchman gruffly. “It operates.”

“Distance one hundred twenty thousand klicks and closing,” said Patek Georg. “Search radar has just been joined by acquisition radar.”

“Defensive measures?” said Dem Lia, her voice quiet.

Saigyô answered. “Class-twelve field in place and infinitely redundant. CPB deflectors activated. Hyperkinetic countermissiles ready. Plasma shields on maximum. Countermissiles armed and under positive control.” This meant simply that both Dem Lia and Patek Georg would have to give the command to launch them, or—if the human passengers were killed—Saigyô would do so.

“Distance one hundred five thousand klicks and closing,” said Patek Georg. “Relative delta-v dropping to one hundred meters per second. Three more acquisition radars have locked on.”

“Any other transmissions?” asked Dem Lia, her voice tight.

“Negative,” said Den Soa at her virtual console. “The machine seems blind and dumb except for the primitive radar. Absolutely no signs of life aboard. Internal communications show that it has… intelligence… but not true AI. Computers more likely. Many series of physical computers.”

“ Physical computers!” said Dem Lia, shocked. “You mean silicon… chips… stone axe-level technology?”

“Or just above,” confirmed Den Soa at her console. “We’re picking up magnetic bubble-memory readings, but nothing higher.”

“One hundred thousand klicks…” began Patek Georg, and then interrupted himself. “The machine is firing on us.”

The outer containment fields flashed for less than a second.

“A dozen CPB’s and two crude laser lances,” said Patek Georg from his virreal point of view. “Very weak. A class-one field could have countered them easily.”

The containment field flickered again.

“Same combination,” reported Patek. “Slightly lower energy settings.”

Another flicker.

“Lower settings again,” said Patek. “I think it’s giving us all it’s got and using up its power doing it. Almost certainly just a meteor defense.”

“Let’s not get overconfident,” said Dem Lia. “But let’s see all of its defenses.”

Den Soa looked shocked. “You’re going to attack it?”

“We’re going to see if we can attack it,” said Dem Lia. “Patek, Saigyô, please target one lance on the top corner of that protuberance there…” She pointed her laser stylus at a blackened, cratered, fin-shaped projection that might have been a radiator two klicks high. “…and one hyperkinetic missile…”

“ Commander!” protested Den Soa.

Dem Lia looked at the younger woman and raised her finger to her lips. “One hyperkinetic with plasma warhead removed, targeted at the front lower leading edge of the machine, right where the lip of that aperture is.”

Patek Georg repeated the command to the AI. Actual target coordinates were displayed and confirmed.

The CPB struck almost instantly, vaporizing a seventy-meter hole in the radiator fin.

“It raised a class-point-six field,” reported Patek Georg. “That seems to be its top limit of defense.”

The hyperkinetic missile penetrated the containment field like a bullet through butter and struck an instant later, blasting through sixty meters of blackened metal and tearing out through the front feeding-orifice of the harvesting machine. Everyone aboard watched the silent impact and the almost mesmerizing tumble of vaporized metal expanding away from the impact site and the spray of debris from the exit wound. The huge machine did not respond.

“If we had left the warhead on,” murmured Dem Lia, “and aimed for its belly, we would have a thousand kilometers of exploding harvest machine right now.”