07-Beowulf Shaeffer

by Larry Niven

  "Planet size, Mars and up. Beyond that it depends on how close you get and how dense it is. If it's dense enough, it can be less massive and still flip you out of the universe. But you'd see it in the mass sensor."

  "Only for an instant...and not then, if it's turned off. What if someone turned on a giant gravity generator as we went past?"

  "For what? They couldn't rob the ship. Where's their profit?"

  "Stocks."

  But Ausfaller was shaking his head. "The expense of such an operation would be enormous. No group of pirates would have enough additional capital on hand to make it worthwhile. Of the puppeteers I might believe it."

  Hell, he was right. No human that wealthy would need to turn pirate.

  The long green line marking Sol was almost touching the surface of the mass sensor. I said, "Breakout in ten minutes."

  And the ship lurched savagely.

  "Strap down!" I yelled, and glanced at the hyperdrive monitors. The motor was drawing no power, and the rest of the dials were going bananas.

  I activated the windows. I'd kept them turned off in byperspace lest my flatlander passengers go mad watching the Blind Spot. The screens came on, and I saw stars. We were in normal space.

  "Futz! They got us anyway." Carlos sounded neither frightened nor angry, but awed.

  As I raised the hidden panel Ausfaller cried, "Wait!" I ignored him. I threw. the red switch, and Hobo Kelly lurched again as her belly blew off.

  Ausfaller began cursing in some dead flatlander language.

  Now two-thirds of Hobo Kelly receded, slowly turning. What was left must show as what she was: a No. 2 General Products hull, puppeteer-built, a slender transparent spear three hundred feet long and twenty feet wide, with instruments of war clustered along what was now her belly. Screens that had been blank came to life. And I lit the main drive and ran it up to full power.

  Ausfaller spoke in rage and venom. "Shaeffer, you idiot, you coward! We run without knowing what we run from. Now they know exactly what we are. What chance that they will follow us now? This ship was built for a specific purpose, and you have ruined it!"

  "I've freed your special instruments," I pointed out. "Why don't you see what you can find?" Meanwhile I could get us the futz out of here.

  Ausfaller became very busy. I watched what he was getting on screens at my side of the control panel. Was anything chasing us? They'd find us hard to catch and harder to digest. They could hardly have been expecting a General Products hull. Since the puppeteers stopped making them, the price of used GP hulls has gone out of sight.

  There were ships out there. Ausfaller got a close-up of them: three space tugs of the Belter type, shaped like thick saucers, equipped with oversized drives and powerful electromagnetic generators. Belters use them to tug nickel-iron asteroids to where somebody wants the ore. With those heavy drives they could probably catch us, but would they have adequate cabin gravity?

  They weren't trying. They seemed to be neither following nor fleeing. And they looked harmless enough.

  But Ausfaller was doing a job on them with his other instruments. I approved. Hobo Kelly had looked peaceful enough a moment ago. Now her belly bristled with weaponry. The tugs could be equally deceptive.

  From behind me Carlos asked, "Bey? What happened?"

  "How the futz would I know?"

  "What do the instruments show?"

  He must mean the hyperdrive complex. A couple of the indicators had gone wild; five more were dead. I said so. "And the drive's drawing no power at all. I've never heard of anything like this. Carlos, it's still theoretically impossible."

  "I'm...not so sure of that. I want to look at the drive."

  "The access tubes don't have cabin gravity."

  Ausfaller had abandoned the receding tugs. He'd found what looked to be a large comet, a ball of frozen gases a good distance to the side. I watched as he ran the deep radar over it. No fleet of robber ships lurked behind it.

  I asked, "Did you deep-radar the tugs?"

  "Of course. We can examine the tapes in detail later. I saw nothing. And nothing has attacked us since we left hyperspace."

  I'd been driving us in a random direction. Now I turned us toward Sol, the brightest star in the heavens. Those lost ten minutes in hyperspace would add about three days to our voyage.

  "If there was an enemy, you frightened him away. Shaeffer, this mission and this ship have cost my department an enormous sum, and we have learned nothing at all."

  "Not quite nothing," said Carlos. "I still want to see the hyperdrive motor. Bey, would you run us down to one gee?"

  "Yeah. But...miracles make me nervous, Carlos."

  "Join the club."

  We crawled along an access tube just a little bigger than a big man's shoulders, between the hyperdrive motor housing and the surrounding fuel tankage. Carlos reached an inspection window. He looked in. He started to laugh.

  I inquired as to what was so futzy funny.

  Still chording, Carlos moved on. I crawled after him and looked in.

  There was no hyperdrive motor in the hyperdrive motor housing.

  I went in through a repair hatch and stood in the cylindrical housing, looking about me. Nothing. Not even an exit hole. The superconducting cables and the mounts for the motor had been sheared so cleanly that the cut ends looked like little mirrors.

  Ausfaller insisted on seeing for himself. Carlos and I waited in the control room. For a while Carlos kept bursting into fits of giggles. Then he got a dreamy, faraway look that was even more annoying.

  I wondered what was going on in his head and reached the uncomfortable conclusion that I could never know. Some years ago I took IQ tests, hoping to get a parenthood license that way. I am not a genius.

  I knew only that Carlos had thought of something I hadn't, and he wasn't telling, and I was too proud to ask.

  Ausfaller had no pride. He came back looking like he'd seen a ghost. "Gone! Where could it go? How could it happen?"

  "That I can answer," Carlos said happily. "It takes an extremely high gravity gradient. The motor hit that, wrapped space around itself, and took off at some higher level of hyperdrive, one we can't reach. By now it could be well on its way to the edge of the universe."

  I said, "You're sure, huh? An hour ago there wasn't a theory to cover any of this."

  "Well, I'm sure our motor's gone. Beyond that it gets a little hazy. But this is one well-established model of what happens when a ship hits a singularity. At a lower gravity gradient the motor would take the whole ship with it, then strew atoms of the ship along its path till there was nothing left but the hyperdrive field itself."

  "Ugh."

  Now Carlos burned with the love of an idea. "Sigmund, I want to use your hyperwave. I could still be wrong, but there are things we can check."

  "If we are still within the singularity of some mass, the hyperwave will destroy itself."

  "Yeah. I think it's worth the risk."

  We'd dropped out, or been knocked out, ten minutes short of the singularity around Sol. That added up to sixteen light-hours of normal space, plus almost five light-hours from the edge of the singularity inward to Earth. Fortunately, hyperwave is instantaneous, and every civilized system keeps a hyperwave relay station just outside the singularity. Southworth Station would relay our message inward by laser, get the return message the same way, and pass it on to us ten hours later.

  We turned on the hyperwave, and nothing exploded.

  Ausfaller made his own call first, to Ceres, to get the registry of the tugs we'd spotted. Afterward Carlos called Elephant's computer setup in New York, using a code number Elephant doesn't give to many people. "I'll pay him back later. Maybe with a story to go with it," he gloated.

  I listened as Carlos outlined his needs. He wanted full records on a meteorite that had touched down in Tunguska, Siberia, USSR, Earth, in 1908 A.D. He wanted a reprise on three models of the origin of the universe or lack of same: the big bang, the cyclic universe, and th
e steady state universe. He wanted data on collapsars. He wanted names, career outlines, and addresses for the best known students of gravitational phenomena in Sol system. He was smiling when he clicked off.

  I said, "You got me. I haven't the remotest idea what you're after."

  Still smiling, Carlos got up and went to his cabin to catch some sleep.

  I turned off the main thrust motor entirely. When we were deep in Sol system, we could decelerate at thirty gravities. Meanwhile we were carrying a hefty velocity picked up on our way out of Sirius system.

  Ausfaller stayed in the control room. Maybe his motive was the same as mine. No police ships out here. We could still be attacked.

  He spent the time going through his pictures of the three mining tugs. We didn't talk, but I watched.

  The tugs seemed ordinary enough. Telescopic photos showed no suspicious breaks in the hulls, no hatches for guns. In the deep-radar scan they showed like ghosts: we could pick out the massive force-field rings, the hollow, equally massive drive tubes, the lesser densities of fuel tank and life-support system. There were no gaps or shadows that shouldn't have been there.

  By and by Ausfaller said, "Do you know what Hobo Kelly was worth?"

  I said I could make a close estimate.

  "It was worth my career. I thought to destroy a pirate fleet with Hobo Kelly. But my pilot fled. Fled! What have I now, to show for my expensive Trojan horse?"

  I suppressed the obvious answer, along with the plea that my first responsibility was Carlos's life. Ausfaller wouldn't buy that. Instead, "Carlos has something. I know him. He knows how it happened."

  "Can you get it out of him?"

  "I don't know." I could put it to Carlos that we'd be safer if we knew what was out to get us. But Carlos was a flatlander. It would color his attitudes.

  "So," said Ausfaller. "We have only the unavailable knowledge in Carlos's skull."

  A weapon beyond human technology had knocked me out of hyperspace. I'd run. Of course I'd run. Staying in the neighborhood would have been insane, said I to myself, said I. But, unreasonably, I still felt bad about it.

  To Ausfaller I said, "What about the mining tugs? I can't understand what they're doing out here. In the Belt they use them to move nickel-iron asteroids to industrial sites."

  "It is the same here. Most of what they find is useless -- stony masses or balls of ice -- but what little metal there is, is valuable. They must have it for building."

  "For building what? What kind of people would live here? You might as well set up shop in interstellar space!"

  "Precisely. There are no tourists, but there are research groups here where space is flat and empty and temperatures are near absolute zero. I know that the Quicksilver Group was established here to study hyperspace phenomena. We do not understand hyperspace, even yet. Remember that we did not invent the hyperdrive; we bought it from an alien race. Then there is a gene-tailoring laboratory trying to develop a kind of tree that will grow on comets."

  "You're kidding."

  "But they are serious. A photosynthetic plant to use the chemicals present in all comets...it would be very valuable. The whole cometary halo could be seeded with oxygen-producing plants -- " Ausfaller stopped abruptly, then, "Never mind. But all these groups need building materials. It is cheaper to build out here than to ship everything from Earth or the Belt. The presence of tugs is not suspicious."

  "But there was nothing else around us. Nothing at all."

  Ausfaller nodded.

  When Carlos came to join us many hours later, blinking sleep out of his eyes, I asked him, "Carlos, could the tugs have had anything to do with your theory?"

  "I don't see how. I've got half an idea, and half an hour from now I could look like a half-wit. The theory I want isn't even in fashion anymore. Now that we know what the quasars are, everyone seems to like the steady state hypothesis. You know how that works: the tension in completely empty space produces more hydrogen atoms, forever. The universe has no beginning and no end." He looked stubborn. "But if I'm right, then I know where the ships went to after being robbed. That's more than anyone else knows."

  Ausfaller jumped on him. "Where are they? Are the passengers alive?"

  "I'm sorry, Sigmund. They're all dead. There won't even be bodies to bury."

  "What is it? What are we fighting?"

  "A gravitational effect. A sharp warping of space. A planet wouldn't do that, and a battery of cabin gravity generators wouldn't do it; they couldn't produce that sharply bounded a field."

  "A collapsar," Ausfaller suggested.

  Carlos grinned at him. "That would do it, but there are other problems. A collapsar can't even form at less than around five solar masses. You'd think someone would have noticed something that big, this close to Sol."

  "Then what?"

  Carlos shook his head. We would wait.

  The relay from Southworth Station gave us registration for three space tugs, used and of varying ages, all three purchased two years ago from IntraBelt Mining by the Sixth Congregational Church of Rodney.

  "Rodney?"

  But Carlos and Ausfaller were both chortling. "Belters do that sometimes," Carlos told me. "It's a way of saying it's nobody's business who's buying the ships."

  "That's pretty funny, all right. But we still don't know who owns them."

  "They may be honest Belters. They may not."

  Hard on the heels of the first call came the data Carlos had asked for, playing directly into the shipboard computer. Carlos called up a list of names and phone numbers: Sol system's preeminent students of gravity and its effects, listed in alphabetical order.

  An address caught my attention:

  Julian Forward, #1192326 Southworth Station.

  A hyperwave relay tag. He was out here, somewhere in the enormous gap between Neptune's orbit and the cometary belt, out here where the hyperwave relay could function. I looked for more Southworth Station numbers. They were there:

  Launcelot Starkey, #1844719 Southworth Station.

  Jill Luciano, #1844719 Southworth Station.

  Mariana Wilton, #1844719 Southworth Station.

  "These people," said Ausfaller. "You wish to discuss your theory with one of them?"

  "That's right. Sigmund, isn't 1844719 the tag for the Quicksilver Group?"

  "I think so. I also think that they are not within our reach now that our hyperdrive is gone. The Quicksilver Group was established in distant orbit around Antenora, which is now on the other side of the sun. Carlos, has it occurred to you that one of these people may have built the ship-eating device?"

  "What?...You're right. It would take someone who knew something about gravity. But I'd say the Quicksilver Group was beyond suspicion. With upwards of ten thousand people at work, how could anyone hide anything?"

  "What about this Julian Forward?"

  "Forward. Yeah. I've always wanted to meet him."

  "You know of him? Who is he?"

  "He used to be with the Institute of Knowledge on Jinx. I haven't heard of him in years. He did some work on the gravity waves from the galactic core...work that turned out to be wrong. Sigmund, let's give him a call."

  "And ask him what?"

  "Why...?" Then Carlos remembered the situation. "Oh. You think he might -- Yeah."

  "How well do you know this man?"

  "I know him by reputation. He's quite famous. I don't see how such a man could go in for mass murder."

  "Earlier you said that we were looking for a man skilled in the study of gravitational phenomena."

  "Granted."

  Ausfaller sucked at his lower lip. Then, "Perhaps we can do no more than talk to him. He could be on the other side of the sun and still head a pirate fleet."

  "No. That he could not."

  "Think again," said Ausfaller. "We are outside the singularity of Sol. A pirate fleet would surely include hyperdrive ships."

  "If Julian Forward is the ship eater, he'll have to be nearby. The, uh, device won't move in
hyperspace."

  I said, "Carlos, what we don't know can kill us. Will you quit playing games." But he was smiling, shaking his head. Futz. "All right, we can still check on Forward. Call him up and ask where he is! Is he likely to know you by reputation?"

  "Sure. I'm famous, too."

  "Okay. If he's close enough, we might even beg him for a ride home. The way things stand we'll be at the mercy of any hyperdrive ship for as long as we're out here."

  "I hope we are attacked," said Ausfaller. "We can outfight -- "

  "But we can't outrun. They can dodge; we can't."

  "Peace, you two. First things first." Carlos sat down at the hyperwave controls and tapped out a number.

  Suddenly Ausfaller said, "Can you contrive to keep my name out of this exchange? If necessary you can be the ship's owner."

  Carlos looked around in surprise. Before he could answer, the screen lit. I saw ash-blond hair cut in a Belter crest over a lean white face and an impersonal smile.

  "Forward Station. Good evening."

  "Good evening. This is Carlos Wu of Earth calling long distance. May I speak to Dr. Julian Forward, please?"

  "I'll see if he's available." The screen went on hold.

  In the interval Carlos burst out: "What kind of game are you playing now? How can I explain owning an armed, disguised warship?"

  But I began to see what Ausfaller was getting at. I said, "You'd want to avoid explaining that, whatever the truth was. Maybe he won't ask. I -- " I shut up because we were facing Forward.

  Julian Forward was a Jinxian, short and wide, with arms as thick as legs and legs as thick as pillars. His skin was almost as black as his hair: a Sirius suntan, probably maintained by sunlights. He perched on the edge of a massage chair. "Carlos Wu!" he said with flattering enthusiasm. "Are you the same Carlos Wu who solved the Sealeyharn Limits problem?"

  Carlos said he was. They went into a discussion of mathematics, a possible application of Carlos's solution to another limits problem, I gathered. I glanced at Ausfaller -- not obtrusively, because for Forward he wasn't supposed to exist -- and saw him pensively studying his side view of Forward.