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Fiction:SFInevitability SphereBy Jeff Duntemann K7JPDA hyperspace tube can only be anchored on one end. If the tube is eleven light years long, just try to catch the other end!"That’s my ship up there," said the young captain with undisguised bitterness.Old Tom Hoyt tugged thoughtfully at his beard, and looked up. A brilliant silver point was crawling across the sky, dimmed and sometimes hidden by a scramble of late summer clouds crawling in from the east. The alien air was sharp with its own hint of thunderstorms. Evening’s smoky yellows and pinks still hung in the west, but the gray east held flashes of distant lightning.The captain went on. "The orbit won’t decay for another sixty-two thousand years. The computer told me that as though it mattered.""Somebody will come after it, sooner or later.""Not me. The junkman maybe. I’ve got a desk job now.""When the next Earth-normal world turns up, your ship will fly again," Hoyt said."Only until they poke another Low Road through."The simple truth, that. Hoyt had nothing to say. They stood beside his torchwing, which glinted silver in the cold blue light of the airstrip marker lamps. Aerodynamically, it was ancient. The fuselage was thicker, the wings stubbier than those of the Twentieth Century jet aircraft that had spawned it. The basic lines were the same.Inside the silver skin was very little but torch and ignition capacitor. The airborne fusion tube had been born with the third millennium A.D., and Hoyt knew of little that would change it in the future.The captain squeezed in through the tiny hatch, Hoyt climbing after. Hoyt settled both of them into their webs, then pulled a tight fitting helmet over his head. The captain began to done his own helmet, emblazoned with the silver galaxy of Earth’s Star Service. Hoyt stopped him. "Cover your ears with your hands. They don’t build Star Service helmets nearly soundproof enough for torch work."Hoyt started the torch sequence. The torchwing’s wings were tanks filled with heavy hydrogen. For half a minute the turbine burned the hydrogen in air, turning a generator with ever increasing speed. The resultant shreik was painful, even through Hoyt’s own helmet. The captain was hunched over, thumbs pressed hard into his ears. When the turbine had charaged the capacitor bank to capacity, the capacitors fed their entire accumulated charge to the ignition laser, for one star-hot pulse—Wham!For the thousandth time, Hoyt felt as though it would shake his teeth loose. The turbine sank back to a dull whine, not feeding hot deuterium to the rising burble of the fusion torch. The noise faded from painful to merely maddening."How old is this thing?" the captain called over the racket."Hundred and forty years.""They should have scrapped it a hundred and thirty nine years ago."Hoyt shrugged. "It’s what I’ve got."They taxied to the edge of the airstrip, waited for clearance, and let the torch go. They left the town at two Gs. Graveltown was lost beneath the thickening clouds before they ever saw its tiny scattering of lights. Hoyt punched in a familiar course on the autopilot and turned to look at the young captain. His uniform, crisp and spotless, was hung with brass and ribbons. His face was Celtic and a touch craggy, and very proud. His eyes were humorless and intelligent. Hoyt was troubled by the bitterness and anger he sensed. "You were about to say that this is the crudest thing you ever rode in," observed Hoyt."It is.""Do you know what a tailgunner is, son?"The captain nodded. "A suicide who shot steel slugs at other suicides in some twentieth century war. I saw one in a video years ago.""You’re looking at another."The captain’s eyebrows rose. "So when did they stop your clock, old man?""1996. I’ll be seventy-two forever. Time gives you perspective; crude is what’s ten years older than what you’re used to. I’ve known men who fought on horseback. But they did it well. That’s what counts."The captain remained silent. Hoyt looked ahead toward the advancing thunderstorm. True Grit’s atmopshere was thinner than Earth’s, but much deeper. The squall line was a churning black wall rolling out of the east, easily five miles high. Hoyt leveled off at twenty thousand feet and recovered control from the autopilot. That high, the sun had not quite set. The storm flashed purple from within.The captain was peering ahead, suddenly interested. "I tried to spot it from space. Thought it would be easy. But the weather’s been lousy."Hoyt grunted."You fly like you’ve been a pilot for a long time."Hoyt felt the younger man groping for a reason to respect him. "Quarter of a millennium. More.""So why didn’t you ever get into space?"Hoyt shrugged. "I’m too old—and too dumb. When I was young space was a kid’s dream. Flying a wing is nothing like flying a starship. That takes real brains. Lots of things to keep straight, all at one time, but it goes slowly enough to let you stop and think. A supersonic wing you have to fly with your reflexes. There’s no time to sit back and ask a computer questions. Old habits are hard to break. I never developed space brains.""Ahhhh!"Hoyt looked where the captain pointed. True Grit’s end of the Low Road had just burst through the face of the nearest thunderhead. The Road darted erratically along the squall line for a mile or so, then shot straight up and was lost to sight. It was a thousand-foot sphere of velvet blackness, without feature or reflection.Moments later it returned from their left, jigging and jogging and doubling back on its path. Hoyt watched the captain’s eyes darting back and forth, trying to follow it. It would slow for a heartbeat, jitter almost in place, then dart off in mile-long straight lines to quickly to see at all. The captain shook his head."Nothing can move that fast!""Right. And nothing is just what it is. It occupies the same space as the air molecules it seems to cover. There is no interaction between it and the atmosphere, or anything else massing less than fifty pounds in one lump.""So how in hell do you expect to catch it?""Instinct," Hoyt said, and grinned. "I’ve got good instincts."Hoyt was swinging the torchwing in a wide arc, keeping the bounding sphere below and to their left. Instantaneous star travel indeed! It was easy enough to anchor one end of the Low Road a mile over the Mohave Desert. But the other end—Hoyt thought of holding a twelve-foot fiberglass fishing rod in one hand and trying to follow a fly creeping randomly across the opposite wall with its tip. Then he imagined a fishing pole twelve light years long, and put it out of his head.It wasn’t entirely random motion, though it seemed random enough to him. The Low Road was slightly flexible in ways that gave Hoyt headaches to think about. Noise in the control circuits, changing solar wind pressures on the Earth, even minor temblors a thousand miles from the Mojave were multiplied by a seventy trillion mile lever. A man who followed that darting black ball could develop a feel for its wanderings; not enough to predict it exactly, but enough to improve his odds at catching it. Improving those odds was what Tom Hoyt did for a living.Hoyt kept his eyes on the sphere. At last he chose to play his hunch, and without warning threw the torchwing into a power dive toward a point just ahead of advancing clouds. The Road hurtled toward the spot, jumped back, and came on again. The captain pressed himself back into his seat and cringed when the wing missed the black sphere by a few hundred feet. Then it was gone, into the clouds, and moments later the storm closed around them.Hoyt swore under his breath. The torchwing bucked in the storm’s rough air. Hoyt glanced aside and saw the young captain breathing rapidly."Things seldom happen…this fast…in space," he said."Relax. They usually don’t happen this fast dirtside either. That’s most of the problem. It’s also the only reason I got this job. I have a reputation as a fast flier."The young man laughed bitterly. "So do I. My ship is a premium speed courier. Too small for cargo, and rather spartan for passengers. I handled all government traffic in documents, credit transfers, and important people. The government never trusted the Low Road with things like that—until now. They want me back on Earth in a bad way. So bad my own ship isn’t even fast enough. You have my job now, old man."Hoyt began wishing for a change of subject. He made a badly planned dive and missed the sphere by several miles. The captain watched it plummet into the clouds and vanish. Lightning glared around them."What happens if it hits the ground?" the captain asked."The Road tries to suck the whole planet through to Earth. It doesn’t get too far before the breakers blow and the Road vanishes. It takes three months of calculation and a billion kilowatts of power to poke it through again. They’re careful. Believe me.""They should have kept it in space."Hoyt was searching the dark clouds for the Road. It was getting very dark. "It had to be in space, back when the damned ting wandered through a volume of space a million miles in diameter. Graveltown came through loaded in one-shot re-entry vehicles made of foam lined with brick. One of the unmanned ones burned up in the atmosphere with a fortune in farm machinery aboard. Entering a planetary atmosphere from orbit is dangerous."Control systems improved over the months. The volume of space in which the Road wanders is called its ‘probability sphere.’ Finding the thing when it was out in space was like finding an electron in an orbital. They knew it couldn’t be in space forever, but they couldn’t bring it dow... [ Pobierz całość w formacie PDF ]

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