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Even after other means of traveling to the stars were found, however, such grand and large-scale solutions remained well beyond even the theoretical reach of human technology.

—
A History of Star Flight

D
R
. C
HASE
R
ANDALL

C
.
E
. 2451

It gleamed, a taut-stretched thread, a whisker of quicksilver set against the night, ruler-straight and so slender compared to its length that it seemed insubstantial, a scratch, perhaps, across the dark.

»
DEVCAMERON
« checked again the numbers overlaying his perception of the universe. That whisker was just over two kilometers thick and well over a thousand long. There was no way to know, of course, what units the thing’s builders used, but it was interesting that the cylinder’s length was
precisely
512 times its width, which suggested the use of binary arithmetic.

In terms of sheer size, of course, »
DEVCAMERON
« had seen human-built structures outwardly much grander than this. The sky-els hanging from the skies of most of the Shichiju’s colonized worlds were the largest artificial structures known, cables tens to hundreds of meters thick and towering forty thousand kilometers or more all the way to the planet’s synchorbital. But the density of this artifact approached that of a neutron star, with the mass of a fair-sized world packed into that whisker’s long and narrow volume. Too, it was rotating, rolling about its long axis so fast that a point on its circumference was moving at relativistic velocities… better than seven tenths the speed of light.

With a moderate amplification of his senses, »
DEVCAMERON
« could look into the surface of the cylinder, but the closest examination revealed nothing useful. Rotation wiped any detail into a mirror-silvered emptiness, too bright and perfect even to be called a blur. Though they could not sense it in such strangely distorted space, the watchers felt that some sort of force field was in play; without one, centrifugal force would have ripped the cylinder apart. Human technology routinely manufactured electromagnetic screens—necessary to protect crew and equipment aboard vessels from charged particles at relativistic speeds—but a true “force field” in the classical sense of an invisible and impenetrable wall remained as much a physical impossibility as moving suns or communicating instantly across the Galaxy.

No human technology—no DalRiss or Naga biotech, for that matter—could even approach the varied magics they were witnessing here. Even from a hundred thousand kilometers away, »
DEVCAMERON
« could sense the tug and twist of that thing as rotating gravitational mass reshaped the fabric of local space. According to theory, those reshapings opened paths, invisible slits in spacetime that led… elsewhere.

»
DEVCAMERON
« had downloaded what history he possessed that might have a bearing on the thing. Centuries before, human theorists had speculated that such a construct might be used to open pathways across the light years, though there was no substance to such speculations, nor had the thing ever even been given a name. For »
DEVCAMERON
«, as for the DalRiss and Naga intelligences he was linked with, it was simply the Device.

And it was hungry.

It hung suspended in space at the gravitational balance point of the two shrunken suns of Nova Aquila. A stream of crimson flame spiraled out from the equator of each spinning star, arcing across millions of kilometers of intervening space, the feathered tips dwindling as they were compressed and reshaped by forces beyond comprehension, then vanishing into empty space just beyond the ends of the cylinder.

They appeared to vanish into nothing, uncounted gigatons of star plasma whirling silently into emptiness each second. From a distance, the silvery thread appeared stretched tight between the tips of those fiery prominences. At closer ranges, it was clear the star stuff was being funneled away to someplace else, plunging into gateways opened outside of the normal dimensions of space and time.

The Device raised so many, many questions, all thus far unanswerable. Foremost, however, were who had built it… and why.

“Humans have records of this star exploding,” »
DEVCAMERON
« told the DalRiss-Naga fusion that was his host. “It was seen in the skies of Earth in pre-spaceflight times, in the spring of 1918, Current Era. It was the brightest ordinary nova ever witnessed, outshining every star in the skies of Earth’s northern hemisphere except for Sirius.”

“The DalRiss, too, have such records,” a voice replied in his mind. “A bright star appeared in the night skies of GhegnuRish some forty sixes of seasons ago. We were involved with the
Gharku
at the time, however, and could pay scant attention to stars, however bright.”

“I can imagine.”

“Gharku” was what the Riss had called the Naga, before human contact with one of the entities had opened new possibilities in understanding and being. The name could be translated, roughly, as “The Chaos.” Before peaceful contact, which the being that was now »
DEVCAMERON
« had first initiated almost by accident, humans had known the Naga as Xenophobes, an assumption about motives that later proved to be quite wrong.

“We’re about twelve hundred light years from Earth,” he thought. “Eleven hundred from GhegnuRish. The star went nova almost two thousand years ago, sometime around 700
C
.
E
.”

“What is the significance of the time?”

“Nothing, I guess. Except that I’m wondering if whoever made the Device also made Nova Aquila explode in the first place. If they did, it means the Device is two millennia old. Has it been eating these stars the whole time?”

“The designers could be opportunists who arrived long after the detonation. The date of the explosion does not logically fix their place in time.”

“No.”

But »
DEVCAMERON
« was being gnawed by a terrible fear.

Some of the information he’d downloaded included an interesting datum about novas seen on Earth, something he’d picked up long, long ago when he’d downloaded anything at all that he could find about the stars. It was basically a meaningless piece of trivia, not germane to affairs closer to home.

The appearance of a “new star,” a nova, had always been cause for wonder… and occasionally fear. Some few, like the brilliant beacon that illuminated the skies in
C
.
E
. 1054, were spectacular stellar deaths, the supernovae that collapsed a sun into a tiny, fast-spinning neutron star at the heart of an expanding cloud of dust and gas. The vast majority were not so violent. Ordinary novae, like Nova Aquila, blew off vast amounts of their outer shells, leaving behind shrunken remnants, planet-sized white dwarfs. Most were double stars, as in this system; it was hypothesized that the novae were caused by the expansion of one star’s atmosphere, launching a torrent of gases on the companion star and triggering a detonation, which either tore away the first star’s substance or triggered a second explosion in turn.

That much, at least, was known about novae.

There was one mystery, though, that had dogged the subject for centuries, almost since the beginning of astronomy as a technical science. Novae
should
be more or less evenly distributed across the entire sky, with a slight clumping, perhaps, along the path of the Milky Way where the concentration of stars was thicker. Instead, a disproportionate number of stars had exploded all in the same general region of the heavens, toward the Earth-sky constellations of Aquila, Cygnus, Scutum, Serpens, Ophiuchus, coreward from Sol and slightly to spinward in the great wheel of the Galaxy.

This was far more than any statistical fluke. During one brief forty-year period early in the twentieth century, twenty-five percent of all of the novae seen on Earth had appeared in roughly two percent of the sky. Two of the brightest novae ever recorded had blazed forth in the same year—1936—and the nova of 1918 in Aquila had been the brightest ordinary nova ever recorded.

In the six centuries since, the percentage had fallen and the area of sky expanded, but the records still showed something like ten percent of all novae occurring in about five percent of the sky. The chances of that kind of clustering occurring randomly were in this case literally astronomical.

And here was possible proof that that apparent clumping was not an accident of statistics… but the result of deliberate and intelligent action.

What kind of intelligence would destroy a star?

What need would drive them to destruction on such a massive scale?

“Are there planets in this system?” he asked suddenly. If this star had once possessed worlds, even life…

“We need your help to determine that, »
DEVCAMERON
«,
”
the host replied. “You will need to guide our Perceivers.”

“Link me in.…”

The DalRiss had evolved with a very different set of senses and perceptions than humans. Their primary sense was one that felt the shape of electrochemical fields generated by living tissue. They “saw” life, while inorganic matter was a kind of emptiness, a void they were aware of only by its shape. The DalRiss had engineered other life forms to extend the range and clarity of their visual perception. “Perceivers” were small artificial creatures that were eye and brain and little else. When connected to the interwoven nervous systems of several DalRiss, they provided a kind of sight.

But little understanding. That was one reason the DalRiss had invited »
DEVCAMERON
« to join them, after he’d lost his body. »
DEVCAMERON’S
« brain had evolved the ability to make sense of his surroundings through light-sensitive organs. The DalRiss fleet, numbering eighty of the huge living ships, was as dependent on Dev for his knowledge of what a star
was
as it was on the Perceivers who actually saw its light.

»
DEVCAMERON
« extended his optical senses, enhanced by the sensitive organic optics of the Perceivers. If this double star had been the center of a planetary system two thousand years ago, those worlds would be remote indeed from the tiny, planet-sized white dwarfs that circled one another today. Scored by nova’s heat, then left to freeze in the icy wastes far beyond the reach of those wan dwarfs, if those worlds had ever been touched by life, they were dead now.

He searched for long minutes, sensing only emptiness beyond the wan light of the suns. That proved nothing, for any worlds out there would be dimly lit indeed. Leaving several Perceivers to continue an automatic search, he turned his attention back to the Device.

“How would such a thing work?” the DalRiss voice said in his mind.

“I don’t understand all of the math,” he replied. “But just as a rotating black hole could theoretically open up pathways—wormholes, we call them—to distant points in space or time, a cylindrical mass like this, rotating at relativistic speeds, should open up… gateways in the space around it. A number of these cylinders could have paths lined between them. Or you could send a ship through to a point in empty space, light years away.”

His DalRiss hosts—and of course the Nagas who rode with them—had never imagined such a thing and could not follow the concept as he tried to explain it. If he’d had the math, possibly he could have done a better job, but as it was, all he could do was observe and try to describe what he was sensing to the others.

“You are saying, then,” the DalRiss continued, “that this is a machine for traveling instantly from point to point. Like our Achievers.”

“That’s right,” »
DEVCAMERON
« replied.

Achievers were artificial, DalRiss-grown life forms that could visualize a distant point in space and somehow—no one, not even the DalRiss themselves, was quite certain how it worked—move the ship in a blink across tens or even hundreds of light years, killing the Achiever in the process. When humans first contacted the DalRiss, there’d been speculation that their mode of travel through interstellar space was far superior to the slower, shorter-ranged abilities of human K-T ships, and there’d been discussion about how humans could adopt the DalRiss method.

That was unlikely, at least in the short term, no matter what the advantages might be. DalRiss starship-cities were immense living organisms grown for the purpose; so far as human experimentation had been able to determine in the years since First Contact with the DalRiss, the process they used to move their ships from point to point required that the vessels be organic, their lives meshed symbiotically with those of the Achievers in ways human biotechnology didn’t yet understand. Someday, living human ships might be grown as well, but in the meantime, the only way to use DalRiss technology was to get them to literally carry human ships inside the far larger DalRiss ship-creatures. And, for their own reasons, the DalRiss rarely agreed to do that. Humanity would have to learn how to grow its own ship-creatures.

The DalRiss themselves were the product of artificial symbiosis. The “Riss” portion of the joint creature was a roughly crescent-shaped, many-armed rider atop the bulky, six-legged starfish shape which was the “Dal.” The two were extremely closely linked, sharing one another’s sensory perceptions, a single organism in fact.

Something moved across »
DEVCAMERON’S
« field of view—not in deep space but in close to the Device, a black shape flickering into existence some tens of kilometers above the spinning silver cylinder. “What is that?”

“We perceive nothing—”

“Quickly! On my scan! Enhance!
Enhance!”

Two more shapes followed the first, as quick as thought. His first impression was that they were alive, so fast and agile were they… but the reality was swiftly apparent. The three were dissimilar in details of shape, yet alike, organic-smooth forms, jet black in color, with a line of wickedly curved blades down one side, like saw teeth, or the fins of some aquatic creature, but angled to stab forward instead of trailing behind.