Resurgence

by Charles Sheffield

  She was frightened, and ashamed of being frightened. So why was it reassuring when suddenly the door to the observation chamber slid open and Torran Veck came lumbering in?

  "Oops. Sorry. I didn't know someone was already in here."

  "Torran, if you are going to lie, you have to learn to be better at it."

  He grinned at her, quite unabashed. "All right. I knew you were here. I've been trying something, and I got a result. But I don't understand it. You're smarter than me, so I thought I'd ask you to help me out."

  "That's a lie just as big as your last one." Teri felt oddly comforted. "Where's Julian Graves?"

  "I don't know. But I don't want him in on this, in case it's nothing. It's bad enough to make a fool of yourself in front of one person."

  Torran had twice Teri's body mass, and when he sat down next to her, he as usual seemed to overflow the seat. "You came out here to find out if you could see anything," he said. "In a way, I did the same thing, except that I went into the control room in case any of our sensors reported finding anything."

  He shook his head at her excited look. "Sorry. Not a peep from any recording instrument that we have. They all insist that the ship is nowhere in the universe. But then I did something stupid and irrational."

  "You mean more stupid than entering a Bose node when you don't know where or if you'll come out?"

  "About that stupid. I sent a call for help."

  "You did what?"

  "I know. It was totally dumb, but I felt desperate enough for anything. I generated a message saying who we were, that we were lost, and if anyone heard this, please would they come and help. I sent it. I didn't expect any reply, but I sent it anyway."

  "And you had a reply?"

  "No." Torran shrugged. "Hey, let's be reasonable. What are the chances of anyone picking up a call like that? Zero. But something peculiar did happen. A few microseconds after my message was sent out, the ship's radio receivers recorded a signal. I call it a signal, but it would be more accurate to say it was a burst of static. I couldn't make any sense of it, nor could the ship's computer. But it was something, where before we'd had absolutely nothing.

  "I sat there for a while, then I said to myself, Teri's brighter than you. Why don't you go and bounce it off her? And here I am."

  "Did you apply Lund's First Rule of Oddities?"

  Arabella Lund had been full of "rules," and one of her most basic was this: Anything in the universe can happen once, or at least it can seem to happen. If you want to obtain information, make it happen again.

  Torran nodded. "I did the same thing, three times over. I found identical results: send a signal, and microseconds afterwards we get a funny squiggle of radio sound on our receivers."

  "How did you send your message? I mean, was it in some particular direction?"

  "No, I used omni-directional. Hell, if there was help to be had anywhere I wanted to hear from them. What is it, Teri? You've got an idea, haven't you?"

  "If you can call it that. It may be half-baked, but I want to try something. Let's head back to the control room."

  "Do we need Julian Graves?"

  Teri gave him a drop-dead-right-now glare. "You didn't want to seem like an idiot in front of Julian Graves, but you don't mind me doing it?"

  "Sorry. What are you planning?"

  "Wait and see. You didn't tell me in advance." Teri led the way to the control room. Once there, she ignored the radio wavelength equipment and went across the optical section. "Which one of these lasers provides the best collimated beam?"

  "The blue-green. It diverges only one percent in fifty kilometers."

  "I hope that will be tight enough. How many microseconds after you started to send your call for help did the receivers begin to record radio noise, and how long after you stopped sending did the noise you received end?"

  "I'll have to check. It was small enough that only the instruments could pick it up—so far as I was concerned, they seemed simultaneous." Torran moved across to the receiver displays. "Ninety-four microseconds, plus a fraction, for the delay at the beginning. And the signal went on for a hundred and sixty microseconds after my call ended."

  "That's close enough." Teri was at the laser station. "I'm going to send a one-second pulse from the blue-green laser. Watch the display. See anything?"

  "Yes. A faint green dot showed on the screen—and it lasted about a second."

  "We'll find when we measure it that it lasted exactly one second. Now I'm going to work my way around the full sphere, using one-second pulses every five degrees of arc. We'll measure the exact time of return, and then we will know where we are—or at least, we'll know the distance to the boundary."

  "What boundary?"

  "Don't you get it, Torran? We're not in limbo, or in the Croquemort Timewell, or a spacetime hiatus. The ship is sitting inside some other object, with an interior surface that screens out external radiation and reflects interior radiation. The reason that you got what looked like random returns from your signal is because it went out in all directions, and the distance is not constant to all parts of the boundary wall. So the return was scrambled, with bits of your message jumbled together. It took ninety-four microseconds round-trip time to the nearest point on the boundary, and a hundred and sixty microseconds to the farthest point.

  "Now, I'm going to assume that the velocity of propagating radiation is the same here as in open space—that seems pretty reasonable. So at three hundred thousand kilometers a second, we are fourteen kilometers away from the nearest point of the boundary, and twenty-four kilometers from the farthest point. I also find a zero Doppler shift in frequency between the outgoing laser pulses and their returns, so our ship is at rest relative to the boundary. The advantage of using laser pulses in precise directions is that we—or rather, the ship's computer—can calculate and reconstruct the shape of the space we are inside, and also our ship's distance from any point of the boundary. If we find places where the structure of the wall seems different, those are the logical spots where we should look for a way out."

  "Teri, you're a marvel. Can we start that work at once?"

  "I'd like to. But I think we ought to tell Julian Graves what we have learned. Do you know where he is?"

  "Last time I saw him he was in his own cabin. Contemplating his navel, from the look of him. But you are right, he does need to be told. Come on."

  Julian Graves was in his own cabin. He was not actually contemplating his navel, but he was engaged in a pursuit that seemed just as unproductive. He sat in a chair, lightly strapped in position so that he would not move around in the ship's free-fall environment. He was staring intently at a fixed point in space. Torran and Teri finally realized that a tiny green marble hung there, about a meter in front of Graves's face.

  Teri said, "Councilor, we have important news. We are not in limbo, or in some form of spacetime hiatus."

  Graves nodded. "I know. In a few minutes I was proposing to come and tell the two of you the same thing."

  Torran said, "But how could you possibly know that? You have been sitting in your cabin, and there are no instruments here."

  "Oh, but there are. The human eye and the human brain are both instruments, potentially of a high order. It is true that at no point have I looked beyond the ship itself, but I did not need to. I noticed an oddity in the control cabin some time ago. The ship's drive appeared to be off, since we felt no accelerations. However, the drive monitors indicated that the drive was—and is—turned on, although at an extremely low level. Since our position sensors insist that we are at rest in inertial space, the only explanation is that the ship itself resides in a field of force, albeit a very weak one—far too weak to be apprehensible to human senses. If that is the case, then although the drive holds the ship itself in a fixed position, objects within the ship that are free to move should do so. They experience a small body force."

  Graves leaned back in his chair and placed his fingertips together. "You know, sitting here it occur
s to me that maybe the worst mistake we have made on this whole expedition has been to assume that processes in the Sag Arm resemble in any way the familiar ones of our own Orion Arm. There are Builder artifacts here, and none is in any way like those with which we have experience. To paraphrase an old philosophical thought, the Sag Arm is not only more strange than we imagine; it is more strange than we can imagine."

  Torran's glance at Teri sent a clear message: He's gone gaga. The councilor is off his head. He said to Graves, "The human eye and brain may be instruments, but there is nothing here for them to look at and work on."

  "Oh, but there is." Graves pointed to the green pill-sized ball hanging before him. "We are not in free-fall, you see, even though our bodies feel as though they are. We are not even in the microgravity environment provided by the gravity forces of the ship itself. Steven calculated and compensated for those. An external gravitational force is acting on everything in this ship. A minute one, to be sure, which is why we can't feel it. But if you observe the green sphere, you will find that it is being accelerated very slowly away from me and toward the rear bulkhead. There is a slight asymmetry, a preferred direction to this environment. I can estimate its magnitude by observation of the little marble. However, I have no explanation as to its origin."

  Teri said, "Councilor, we have an explanation." Her glance at Torran said, Equal credit for this, all right? "Here is what we have learned. . . . "

  * * *

  The No Regrets stood at a fixed location, five kilometers off center in a spherical region of radius nineteen kilometers. The space was bounded by a wall of unknown composition, impervious to external radiation and reflecting anything directed to it from inside.

  "But we shouldn't try to take the ship to either the nearest part of the boundary, or the farthest." Teri was leaning over Torran Veck's shoulder as he sat at the controls of the No Regrets. "Our best hope is one of the poles."

  It was their shorthand description for the only two points of asymmetry they had discovered in the spherical space. The "poles" were places where the return laser signal was much weaker than elsewhere, and they held out hope for an easier passage to external space.

  "I have a vector to the nearer one," Teri went on. "The distance is 12.3 kilometers."

  "Marked, and entered into the navigation system." Torran was far more cheerful when he could do something that involved physical activity. "We can be on our way any time. All right to go ahead?"

  "Proceed." Julian Graves sat with his eyes closed and seemed half asleep. "I am sure that it is not necessary to remind you to proceed with extreme caution. We cannot afford to progress from a safe situation to a hazardous one."

  It seemed to Teri that Julian Graves was playing a little fast and loose with words. This was a safe place, where you had no idea how you had arrived and or where you were, and a surprise could pop up to destroy the present calm at any moment?

  Teri couldn't speak for the others, but she wanted out—out to a place where you could see stars and planets again, even if the one seemed ready to go supernova, and the other might be a world where nothing had ever lived or ever could.

  "We're closing in," Torran said. Even crawling along, twelve kilometers for any form of spacegoing vessel was no distance at all. "We are six hundred meters away from the boundary. The drive is working harder to keep us in place, which means that a stronger attractive force is drawing us toward the wall. Nothing to worry about—we could stand a pull a thousand times as hard and still have spare drive capacity to keep us balanced. But there's no way of knowing how things will change as we approach closer to the boundary. Our instruments have monitored our progress so far, and the ship's computer did a fit and came up with an inverse cubic relationship with distance. That can't go on—it implies an infinite force at the boundary—but what we have isn't enough to worry about. Even so, I'm not sure we ought to approach any closer."

  That degree of caution from Torran was unusual. Teri leaned over him as he sat at the controls. "What's the problem?"

  "The boundary point that we are approaching is nothing like you found in other places with your laser probes. There, everything was smooth and reflected light evenly in all directions. Take a look for yourself at what's happening at the pole. I have a broad beam laser illuminating the area straight ahead of us. See how the wall looks? It's all broken and granular. Not only that, there are big changes from moment to moment in the Doppler return. Unless some physical effect is going on different from anything that we know, some parts of the boundary are approaching fast, while others retreat—and they alternate, in a random manner. I don't know of any type of force field that could produce those effects."

  Torran turned to Julian Graves. "Councilor, I have halted our forward progress. I think that the ship ought to remain at its present distance from the pole. However, with your permission, I would like to go outside in a suit and investigate what lies ahead."

  Two days ago Teri would have resented that suggestion. Torran was seeking a star role and pushing her into the background. It didn't feel like that anymore. Nothing specific had happened to make it so, but now she and Torran were a team who would share risks and rewards. Except that she would not in this case be sharing the risk—that would all be Torran's.

  She didn't intend to argue the point directly. Talk of risk, or of sharing risks, might make safety-conscious Julian Graves veto the whole idea. She waited in silence, until finally the councilor nodded.

  "Very well. You may go outside and investigate. But nothing foolhardy. If you find something inexplicable, turn around and come back."

  Good advice from Julian Graves, but if Teri understood Torran at all—and she was learning hour by hour what made the man tick—he would not follow it. The job of a survival expert was to take risks, rather than exposing the whole party to them. Teri knew what she would do in Torran's circumstances, and the thought was a bit scary.

  Teri also needed an answer to a question that might arise in another set of circumstances: What would she do if, while Torran was outside, he did get into serious difficulties?

  "Nothing unusual at the moment." Torran's voice came on cue, exactly as if he had heard her inner thoughts and was reassuring her. He had not wasted a moment after Julian Graves's go-ahead. Already he was leaving the No Regrets. "I'm checking the drive setting I need from my suit to compensate for the body force I'm feeling from the boundary. It is exactly the same as the ship is experiencing. I'm going to take myself a little closer to the wall."

  Teri and Julian Graves watched the suited figure slowly diminish in size. Was it Teri's imagination, or did the outline of Torran's suit seem a little blurred, as though it was out of focus? She blinked, but the slight fuzziness remained.

  "Torran, we're getting an odd optical effect here. Your image shows indistinct edges."

  "I know. I can't feel it, but my suit sensors insist that I am experiencing a small high-frequency oscillating acceleration. The strange thing is, it's not in the direction of the boundary—it's at right angles to that."

  "Torran Veck, do not place yourself at any increased risk."

  "I won't, Councilor. I'm a survival specialist, and I'm as keen to survive as anyone. I now show a distance from the boundary of two hundred and seventy meters. The total body forces on me suggest that I can go to less than a third of that, and still accelerate safely back to the No Regrets. I'll take it slow."

  Torran's figure in its protective suit began to shrink in size. Teri found that she could no longer make out details. Arms, legs, trunk, and head had changed from clear black outlines to gray blurs.

  "Torran, we can't see you clearly any more."

  "I believe it. There are differential accelerations on different parts of my suit, and now I can actually feel them. There's a high-frequency torque, as though parts of me are being twisted in different directions. The overall body force is quite tolerable. I can go a good deal closer with no danger."

  Teri thought, how can he know that, when
we are in a situation that no human has ever experienced before? Julian Graves said, "That's far enough. Torran, come back. We need to do an evaluation of what you have found so far. You can always go out again when we are finished."

  "Sure." But that single word wasn't quite right when it came to Teri's ears. It was distorted, as though sounds, like images, were suffering interference on their way to the No Regrets. She heard one more drawn-out and garbled word—"Da-a-amn-a-a-ation!" Then Torran's blurred figure pinwheeled as though spinning fast around a central axis. At the same time it shrank in size.

  "Torran! Can you hear me?" But Teri felt with sickening certainty that he could not. For there was no longer any sign at all of Torran Veck. In a final split second he had vanished at monstrous speed into the granular unknown of the boundary wall.

  * * *

  Teri was now obliged to operate one-on-one in her argument with Julian Graves. She wished Torran could be there to offer his support, but in a way it didn't matter. Whether she could persuade Julian Graves or not would make no difference. She knew what she had to do, and she would do it.

  She said. "You have more experience with the Bose Network than I do. Have you ever heard of a case where someone made a transition, and was delivered to an end point from which there was no escape?"

  "I have not. But ships have disappeared."

  "If we sit here and do nothing, in the future the No Regrets will be listed as one of them. We have a choice. We can stay and wait for something to happen, with no assurance that anything ever will—other than that we will eventually die. Or we can accept that the boundary itself contains some kind of Bose transition mechanism, but of a type never experienced in the Orion Arm. Remember, Councilor, you were the one who said that the Sag Arm may be stranger than we can imagine. I think that our decision should be an easy one: we follow Torran, and take the No Regrets up to and through the boundary."