David Brin: The Crystal Spheres

Those early explorers knew they would never see their final destination. But they were not sad. They suffered from no great-depression. Those people launched forth in their so-primitive first starship full of hope for their great-grandchildren—and for the world which their sensitive telescopes had proved circled, green and pleasant, around the star Tau Ceti.

Ten thousand waityears later, I looked out at the mammoth Yards of Charon as we passed overhead. Rank on serried rank of starships lay berthed below. Over the millennia, thousands had been built, from generation ships and hiberna-barges to ram-shippers and greatstrutted wormhole-divers.

They all lay below, all except the few that were destroyed in accidents, or whose crews killed themselves in despair. They had all come back to Charon, failures.

I looked at the most ancient hulks, the generation ships, and thought about the day of my grandfather’s youth, when the Seeker cruised blithely over the Edge, and collided at one percent of light speed with the inner face of Sol’s crystalsphere.

They never knew what hit them, that firstcrew.

They had begun to pass through the outermost shoals of the solar system… the Oort Cloud, where billions of comets drifted like puffs of snow in the sun’s weakened grasp.

Seeker ’s instruments sought through the sparse cloud, touching isolated, drifting balls of ice. The would-be colonists planned to keep busy doing science throughout the long passage. Among the questions they wanted to solve on their way was the mystery of the comets’ mass.

Why was it, astronomers had asked for centuries, that virtually all of these icy bodies were nearly the same size—a few miles across?

Seeker ’s instruments ploughed for knowledge. Little did her pilots know she would reap the Joke of the Gods.

When she collided with the crystalsphere, it bowed outward with her over a span of lightminutes. Seeker had time for a frantic lasercast back to Earth. They only knew that something strange was happening. Something had begun tearing them apart, even as the fabric of space itself seemed to rend!

Then the crystalsphere shattered.

And where there had once been ten billion comets, now there were ten quadrillion.

Nobody ever found the wreckage of Seeker . Perhaps she had vaporized. Almost half the human race died in the battle against the comets, and by the time the planets were safe again, centuries later, Seeker was long gone.

We never did find out how, by what accident, she managed to crack the shell. There are still those who contend that it was the crew’s ignorance that crystalspheres even existed that enabled them to achieve what had forever since seemed so impossible.

Now the Shards illuminate the sky. Sol shines within a halo of light, reflected by the ten quadrillion comets… the mark of the only goodstar accessible to man.

“We’re coming in,” Alice told me. I sat up in my seat and watched her nimble hands dance across the panel. Then Pelenor drifted into view.

The great globe shone dully in the light from the Shards. Already the nimbus of her drives caused space around her to shimmer.

The Sol-Gov tugs had finished loading the colonists abroad, and were departing. The ten thousand corpsicles would require little tending during our mission, so we dozen deepspacers would be free to explore. But if the goodstar did, indeed, shine into an accessible goodworld, we would awaken the men and women from frozen-sleep and deliver them to their new home.

No doubt the Worldcomps chose well these sleepers to be potential colonists. Still, we were under orders that none of them should be awakened unless a colony was possible. Perhaps this trip would turn out to be just another disappointment, in which case the corpsicles were never to know that they had been on a journey twenty thousand parsecs and back.

“Let’s dock,” I said eagerly. “I want to get going.”

Alice smiled. “Always the impatient one. The deepspacer’s deepspacer. Give it a day or two, Joshua. We’ll be winging out of the nest soon enough.”

There was no point in reminding her that I had been latewaiting longer than she—indeed, longer than nearly any other human left alive. I kept my restlessness within and listened, in my head, to the music of the spheres.

In my time there were four ways known to cheat Einstein, and two ways to flat-out fool him. On our journey Pelenor used all of them. Our route was circuitous, from wormhole to quantumpoint to collapsar. By the time we arrived, I wondered how the deepprobe had ever gotten so far, let alone back, with its news.

The find was in the nearby minor galaxy, Sculptor. It took us twelve years, shiptime, to get there.

On the way we passed close to at least two hundred goodstars, glowing hotyellow, stable, and solitary. In every case there were signs of planets circling around. Several times we swept by close enough to catch glimpses, in our superscopes, of bright blue waterworks, circling invitingly like temptresses, forever out of reach.

In the old days we would have mapped these places, excitedly standing off just outside the dangerzone, studying the Earth-like worlds with our instruments. We would have charted them carefully, against the day when mankind finally learned how to do on purpose what Seeker had accomplished in ignorance.

Once we did stop, and lingered two lightdays away from a certain goodstar—just outside of its crystalsphere. Perhaps we were foolish to come so close, but we couldn’t help it. For there were modulated radio waves coming from the waterworld within!

It was only the fourth time technological civilization had been found. We spent an excited year setting up robot watchers and recorders to study the phenomenon.

But we did not bother trying to communicate. We knew, by now, what would happen. Any probe we sent in would collide with the crystalsphere around this goodstar. It would be crushed, ice precipitating upon it from all directions until it was destroyed and hidden under megatons of water—a newborn comet.

Any focused beams we cast inward would cause a similar reaction, creating a reflecting mirror that blocked all efforts to communicate with the locals.

Still, we could listen to their traffic. The crystalsphere was a one-way barrier to modulated light and radio, and intelligence of any form. But it let the noise the locals made escape.

In this case, we soon concluded that it was another hive-race. The creatures had no interest in, or even conception of, spacetravel. Disappointed, we left our watchers in place and hurried on.

Our target was obvious as soon as we arrived within a few light-weeks of the goal. Our excitement rose as we found that the probe had not lied. It was a goodstar—stable, old, companionless—and its friendly yellow glow diffracted through a pale, shimmering aura of ten quadrillion snowflakes… its shattered crystalsphere.

“There’s a complete suite of planets,” announced Yen Ching, our cosmophysicist. His hands groped about in his holistank, touching in its murk what the ship’s instruments were able to decipher from this distance.

“I can feel three gasgiants, about two million asteroid smallbodies, and”—he made us wait, while he felt carefully to make sure—“three littleworlds!”

We cheered. With numbers like those, odds were that at least one of the rocky planets circled within the Lifezone.

“Let me see… there’s one littleworld here that has—” Yen pulled his hand from the tank. He popped a finger in his mouth and tasted for a moment, rolling his eyes like a connoisseur savoring fine wine.

“Water.” He smacked thoughtfully. “Yes! Plenty of water. I can taste life, too. Standard adenine-based carbolife. Hmmm. In fact, it’s chlorophyllic and left-handed!”