Between the Strokes of Night

“I’ll put you on the roster to spend a few minutes there. That’s enough. Remember the time rate difference — one T-minute costs most of a day in S-space, and nearly four Earth-years.”

Again Judith Niles turned to leave the room. Sy, after a final glance at the four cowled and motionless figures, followed her outside and along another long and dimly lit corridor. He noted approvingly that her energy and concentration remained undiminished.

They finally approached a massive metal door, protected against entry by locks that called for fingerprint, vocal, retinal, and DNA matching. When Sy was cleared by the system and stepped inside, he looked around him in surprise. He had expected something new and exotic, perhaps another frozen lab, full of strange experiments in time-slowing or suspension of consciousness; but this room appeared to be no more than a standard communications complex. And a dusty, poorly maintained one at that.

“Don’t judge by appearances.” Judith Niles had seen his expression. “This is the most important room in Gulf City. If there are any secrets, they’re here. And don’t think that human nature changes when people move to S-space. It doesn’t, and most individuals never question why things are done the way they are in our system. If they do question, they are shown what you are about to see. If not, we don’t force the information on them. This is the place where the oldest records are accessed.”

She sat down at the console and performed a lengthy coded entry procedure. “You should try cracking this, if you think you’re a hot-shot at finding holes in system software. It has six levels of entry protection. Let’s feel our way into the data base gradually. This is a good place to begin.”

She entered another sequence. The screen lit with the soft, uniform white glow characteristic of S-space. After a few moments there appeared on it a dark network of polyhedral patterns, panels joined by silvery filaments. “You’ve seen one of these yourself, I gather. Gossameres and Pipistrelles — possibly the first alien intelligence that humans discovered. We ran into them twenty thousand Earth-years ago, as soon as deep space probes began with S-space crews; but we’re still not sure if they possess true intelligence. Maybe it depends on our definition. Interesting?”

Sy shrugged in a noncommittal way.

“But not that interesting?” Judith Niles touched the control console again. “I agree. Abstractly interesting, but no more than that unless humans learn to set up a real dialog with them. Well, we have tried. We located their preferred output frequencies, and we found that simple signal sequences would drive them away and discourage them from draining our power supplies. But that’s not much of a message, and we never got beyond it. The Gossameres and Pipistrelles proved to be a kind of dead end. But they served one enormously important function. They alerted us to a particular wavelength region. We began to listen on those frequencies anytime we were in deep space and thought there might be a Gossamere around. And that’s when we began to intercept other signals on the same wavelengths — regular coded pulses of low-frequency radiation, with a pattern like this.”

On the screen appeared a series of rising and falling curves, an interlocking sequence of complex sinusoids broken by regularly spaced even pulses. “We became convinced they were signals, not just natural emissions. But they were faint and intermittent, and we couldn’t locate their sources. Sometimes, a ship on an interstellar transit would pick up a signal on the receiver, long enough for the crew to lock an imaging antenna onto the signal source direction. They might receive a faint source image for a while, then they would lose it as the ship moved on. It was tantalizing, but over the years we built up a library of partial, blurred images. Finally we had enough to plug everything into a computer and look for a pattern. We found one. The ‘sightings’ took place only near the midpoints of the trips, and only when the ships were far from all material bodies and signal sources. The signals were received only when we were in deep space — the deeper, the better.