Ponderously, then, it twists further and further, until at last it becomes a lemniscate, a figure of eight. The instant the string touches itself, it shimmers for a moment, and then suddenly there are two glowing circles before us, twisting and oscillating in shape like jellyfish.
The engineers spray more charge onto the two wormholes, and the two wormholes, arcing lightning into space, slowly repel each other. The vibrations of the cosmic string are spraying out gravitational radiation like a dog shaking off water—even where I am, floating ten kilometers distant, I can feel it, like the swaying of invisible tides—and as they radiate energy, the loops enlarge. The radiation represents a serious danger. If the engineers lose control of the string for even a brief instant, it might enter the instability known as “squiggle mode,” and catastrophically enlarge. The engineers damp out the radiation before it gets critical, though—they are, after all, well practiced at this—and the loops stabilize into two perfect circles. On the other side, at Wolf, precisely the same scene has played out, and two loops of exotic string now circle Wolf-562 as well. The wormhole has been cloned.
All wormholes are daughters of the original wormhole, found floating in the depths of interstellar space eleven hundred years ago, a natural loop of negative cosmic string as ancient as the Big Bang, invisible to the eyes save for the distortion of spacetime. That first one led from nowhere interesting to nowhere exciting, but from that one we bred hundreds, and now we casually move wormhole mouths from star to star, breeding new wormholes as it suits us, to form an ever-expanding network of connections.
I should not have been so close. Angry red lights have been flashing in my peripheral vision, warning blinkers that I have been ignoring. The energy radiated in the form of gravitational waves had been prodigious, and would have, to a lesser person, been dangerous. But in my new body, I am nearly invulnerable, and if I can’t stand a mere wormhole cloning, there is no way I will be able to stand a black hole. So I ignore the warnings, wave briefly to the engineers—though I doubt that they can even see me, floating kilometers away—and use my reaction jets to scoot over to my ship.
The ship I will pilot is docked to the research station, where the scientists have their instruments and the biological humans have their living quarters. The wormhole station is huge compared to my ship, which is a tiny ovoid occupying a berth almost invisible against the hull. There is no hurry for me to get to it.
I’m surprised that any of the technicians can even see me, tiny as I am in the void, but a few of them apparently do, because in my radio I hear casual greetings called out: how’s it, ohayo gozaimasu, hey glad you made it, how’s the bod? It’s hard to tell from the radio voices which ones are people I know, and which are only casual acquaintances. I answer back: how’s it, ohayo, yo, surpassing spec. None of them seem inclined to chat, but then, they’re busy with their own work.
They are dropping things into the black hole.
Throwing things in, more to say. The wormhole station orbits a tenth of an astronomical unit from the Virgo black hole, closer to the black hole than Mercury is to the sun. This is an orbit with a period of a little over two days, but, even so close to the black hole, there is nothing to see. A rock, released to fall straight downward, takes almost a day to reach the horizon.
One of the scientists supervising, a biological human named Sue, takes the time to talk with me a bit, explaining what they are measuring. What interests me most is that they are measuring whether the fall deviates from a straight line. This will let them know whether the black hole is rotating. Even a slight rotation would mess up the intricate dance of the trajectory required for my ship. However, the best current theories predict that an old black hole will have shed its angular momentum long ago, and, as far as the technicians can determine, their results show that the conjecture holds.
The black hole, or the absence in space where it is located, is utterly invisible from here. I follow the pointing finger of the scientist, but there is nothing to see. Even if I had a telescope, it is unlikely that I would be able to pick out the tiny region of utter blackness against the irregular darkness of an unfamiliar sky.
My ship is not so different from the drop probes. The main difference is that I will be on it.
Before boarding the station, I jet over in close to inspect my ship, a miniature egg of perfectly reflective material. The hull is made of a single crystal of a synthetic material so strong that no earthly force could even dent it.
A black hole, though, is no earthly force.
Wolf versus the black hole! The second technological trick I have in my duel against the black hole is my body.
I am no longer a fragile, fluid-filled biological human. The tidal forces at the horizon of a black hole would rip a true human apart in mere instants; the accelerations required to hover would squash one into liquid. To make this journey, I have downloaded your fragile biological mind into a body of more robust material. As important as the strength of my new body is the fact that it is tiny. The force produced by the curvature of gravity is proportional to the size of the object. My new body, a millimeter tall, is millions of times more resistant to being stretched to spaghetti.
The new body has another advantage as well. With my mind operating as software on a computer the size of a pinpoint, my thinking and my reflexes are thousands of times faster than biological. In fact, I have already chosen to slow my thinking down, so that I can still interact with the biologicals. At full speed, my microsecond reactions are lightning compared to the molasses of neuron speeds in biological humans. I see far in the ultraviolet now, a necessary compensation for the fact that my vision would consist of nothing but a blur if I tried to see by visible light.
You could have made my body any shape, of course, a tiny cube or even a featureless sphere. But you followed the dictates of social convention. A right human should be recognizably a human, even if I am to be smaller than an ant, and so my body mimics a human body, although no part of it is organic, and my brain faithfully executes your own human brain software. From what I see and feel, externally and internally, I am completely, perfectly human.
As is right and proper. What is the value of experience to a machine?
Later, after I return—if I return—I can upload back. I can become you.
But return is, as they say, still somewhat problematical.
You, my original, what do you feel? Why did I think I would do it? I imagine you laughing hysterically about the trick you’ve played, sending me to drop into the black hole while you sit back in perfect comfort, in no danger. Imagining your laughter comforts me, for all that I know that it is false. I’ve been in the other place before, and never laughed.
I remember the first time I fell into a star.
We were hotlinked together, that time, united in online-realtime, our separate brains reacting as one brain. I remember what I thought, the incredible electric feeclass="underline" ohmigod, am I really going to do this? Is it too late to back out?
The idea had been nothing more than a whim, a crazy idea, at first. We had been dropping probes into a star, Groombridge 1830B, studying the dynamics of a flare star. We were done, just about, and the last-day-of-project party was just getting in swing. We were all fuzzed with neurotransmitter randomizers, creativity spinning wild and critical thinking nearly zeroed. Somebody, I think it was Jenna, said, we could ride one down, you know. Wait for a flare, and then plunge through the middle of it. Helluva ride!