SFworld 版 (精华区)
发信人: by (春天的小懒虫), 信区: SFworld
标 题: 2010 (36)
发信站: 哈工大紫丁香 (Wed Oct 6 15:10:46 1999), 转信
36
Fire in the Deep
Earth was already far behind, and the awesome wonders of
the Jovian system were expanding swiftly before him, when
he had his revelation.
How could he have been so blind - so stupid! It was as if
he had been walking in his sleep; now he was starting to
awaken.
Who are you? he cried. What do you want? Why have you
done this to me?
There was no answer, yet he was certain that he had been
heard. He sensed a... presence, even as a man can tell,
though his eyes are tightly shut, that he is in a closed room
and not some empty, open space. Around him there was the
faint echo of a vast mentality, an implacable will.
He called again into the reverberant silence, and again
there was no direct reply - only that sense of watchful
companionship. Very well; he would find the answers for
himself.
Some were obvious; whoever or whatever they were,
they were interested in Mankind. They had tapped and
stored his memories, for their own inscrutable purposes.
And now they had done the same with his deepest emo-
tions, sometimes with his cooperation, sometimes without.
He did not resent that; indeed, the very processing he had
experienced made such childish reactions impossible. He
was beyond love and hate and desire and fear - but he had
not forgotten them, and could still understand how they
ruled the world of which he had once been part. Was that the
purpose of the exercise? If so, for what ultimate goal?
He had become a player in a game of gods, and must learn
the rules as he went along.
The jagged rocks of the four tiny outer moons, Sinope,
Pasiphae, Carme, and Ananke, flickered briefly across his
field of consciousness; then came Elara, Lysithea, Himalia,
and Leda at half their distance from Jupiter. He ignored
them all; now the pock-marked face of Callisto lay ahead.
Once, twice, he orbited the battered globe, larger than
Earth's own Moon, while senses of which he had been
unaware probed its outer layers of ice and dust. His curios-
ity was quickly satisfied; the world was a frozen fossil, still
bearing the marks of collisions that, aeons ago, must have
come close to shattering it. One hemisphere was a giant
bull's-eye, a series of concentric rings where solid rock had
once flowed in kilometre-high ripples under some ancient
hammer blow from space.
Seconds later, he was circling Ganymede. Now there was
a far more complex and interesting world; though so near to
Callisto, and almost the same size, it presented an utterly
different appearance. There were, it was true, numerous
craters - but most of them seemed to have been, quite
literally, ploughed back into the ground. The most extraor-
dinary feature of the Ganymedean landscape was the
presence of meandering stripes, built up from scores of
parallel furrows a few kilometres apart. This grooved ter-
rain looked as if it had been produced by armies of intoxi-
cated ploughmen, weaving back and forth across the face of
the satellite.
In a few revolutions, he saw more of Ganymede than all
the space probes ever sent from Earth, and filed away the
knowledge for future use, One day it would be important;
he was sure of that, though he did not know why - any
more than he understood the impulse that was now driving
him so purposefully from world to world.
As, presently, it brought him to Europa. Though he was
still largely a passive spectator, he was aware now of a rising
interest, a focusing of attention - a concentration of will.
Even if he was a puppet in the hands of an unseen and
uncommunicative master, some of the thoughts of that
controlling influence leaked - or were allowed to leak - into
his own mind.
The smooth, intricately patterned globe now rushing
toward him bore little resemblance either to Ganymede or
Callisto. It looked organic the network of lines branching
and intersecting over its entire surface was uncannily like a
world-spanning system of veins and arteries.
The endless ice fields of a frigid waste, far colder than the
Antarctic, stretched beneath him. Then, with brief surprise,
he saw that he was passing over the wreckage of a spaceship.
He recognized it instantly as the ill-fated Tsien, featured in
so many of the video newscasts he had analysed. Not now -
not now - there would be ample opportunity later.
Then he was through the ice, and into a world as un-
known to his controllers as to himself.
It was an ocean world, its hidden waters protected from
the vacuum of space by a crust of ice. In most places the ice
was kilometres thick, but there were lines of weakness
where it had cracked open and torn apart. Then there had
been a brief battle between two implacably hostile elements
that came into direct contact on no other world in the Solar
System. The war between Sea and Space always ended in
the same stalemate; the exposed water simultaneously
boiled and froze, repairing the armour of ice.
The seas of Europa would have frozen completely solid
long ago without the influence of nearby Jupiter. Its gravity
continually kneaded the core of the little world; the forces
that convulsed Io were working there, though with much
less ferocity. As he skimmed across the face of the deep, he
saw everywhere the evidence of that tug-of-war between
planet and satellite.
And he both heard and felt it, in the continual roar and
thunder of submarine earthquakes, the hiss of escaping
gases from the interior, the infrasonic pressure waves of
avalanches sweeping over the abyssal plains. By compar-
ison with the tumultuous ocean that covered Europa, even
the noisy seas of Earth were silent.
He had not lost his sense of wonder, and the first oasis
filled him with delighted surprise. It extended for almost a
kilometre around a tangled mass of pipes and chimneys
deposited by mineral brines gushing from the interior. Out
of that natural parody of a Gothic castle, black, scalding
liquids pulsed in a slow rhythm, as if driven by the beating
of some mighty heart. And, like blood, they were the
authentic sign of life itself.
The boiling fluids drove back the deadly cold leaking
down from above, and formed an island of warmth on the
seabed. Equally important, they brought from Europa's
interior all the chemicals of life. There, in an environment
where none had expected it, were energy and food, in
abundance.
Yet it should have been expected; he remembered that,
only a lifetime ago, such fertile oases had been discovered in
the deep oceans of Earth. Here they were present on an
immensely larger scale, and in far greater variety.
In the tropical zone close to the contorted walls of the
`castle' were delicate, spidery structures that seemed to be
the analogy of plants, though almost all were capable of
movement. Crawling among these were bizarre slugs and
worms, some feeding on the plants, others obtaining their
food directly from the mineral-laden waters around them.
At greater distances from the source of heat - the submarine
fire around which all the creatures warmed themselves -
were sturdier, more robust organisms, not unlike crabs or
spiders.
Armies of biologists could have spent lifetimes studying
that one small oasis. Unlike the Palaeozoic terrestrial seas, it
was not a stable environment, so evolution had progressed
swiftly here, producing multitudes of fantastic forms. And
they were all under indefinite stay of execution; sooner or
later, each fountain of life would weaken and die, as the
forces that powered it moved their focus elsewhere.
Again and again, in his wanderings across the Europan
seabed, he encountered the evidence of such tragedies.
Countless circular areas were littered with the skeletons and
mineral-encrusted remains of dead creatures, where entire
chapters of evolution had been deleted from the book of life.
He saw huge, empty shells formed like convoluted trum-
pets as large as a man. There were clams of many shapes -
bivalves, and even trivalves. And there were spiral stone
patterns, many metres across, which seemed an exact ana-
logy of the beautiful ammonites that disappeared so myster-
iously from Earth's oceans at the end of the Cretaceous
Period.
Searching, seeking, he moved back and forth over the
face of the abyss. Perhaps the greatest of all the wonders he
met was a river of incandescent lava, flowing for a hundred
kilometres along a sunken valley. The pressure at that depth
was so great that the water in contact with the red-hot
magma could not flash into steam, and the two liquids
coexisted in an uneasy truce.
There, on another world and with alien actors, some-
thing like the story of Egypt had been played long before
the coming of man. As the Nile had brought life to a narrow,
ribbon of desert, so this river of warmth had vivified the
Europan deep. Along its banks, in a band never more than
two kilometres wide, species after species had evolved and
flourished and passed away. And at least one had left a
monument behind it.
At first, he thought that it was merely another of the
encrustations of mineral salts that surrounded almost all the
thermal vents. However, as he came closer, he saw that it
was not a natural formation, but a structure created by
intelligence. Or perhaps by instinct; on Earth, the termites
reared castles that were almost equally imposing, and the
web of a spider was more exquisitely designed.
The creatures that had lived there must have been quite
small, for the single entrance was only half a metre wide.
That entrance - a thick-walled tunnel, made by heaping
rocks on top of each other - gave a clue to the builders'
intentions. They had reared a fortress, there in the flickering
glow not far from the banks of their molten Nile. And then
they had vanished.
They could not have left more than a few centuries be-
fore. The walls of the fortress, built from irregularly shaped
rocks that must have been collected with great labour, were
covered with only a thin crust of mineral deposits. One
piece of evidence suggested why the stronghold had been
abandoned. Part of the roof had fallen in, perhaps owing to
the continual earthquakes; and in an underwater environ-
ment, a fort without a roof was wide open to an enemy.
He encountered no other sign of intelligence along the
river of lava. Once, however, he saw something uncannily
like a crawling man - except that it had no eyes and no
nostrils, only a huge, toothless mouth that gulped conti-
nuously, absorbing nourishment from the liquid medium
around it.
Along the narrow band of fertility in the deserts of the
deep, whole cultures and even civilizations might have risen
and fallen, armies might have marched (or swum) under the
command of Europan Tamberlanes or Napoleons. And the
rest of their world would never have known, for all those
oases of warmth were as isolated from one another as the
planets themselves. The creatures who basked in the glow
of the lava river, and fed around the hot vents, could not
cross the hostile wilderness between their lonely islands. If
they had ever produced historians and philosophers, each
culture would have been convinced that it was alone in the
Universe.
Yet even the space between the oases was not altogether
empty of life; there were hardier creatures who had dared its
rigours. Often swimming overhead were the Europan ana-
logues of fish - streamlined torpedoes, propelled by vertical
tails, steered by fins along their bodies. The resemblance to
the most successful dwellers in Earth's oceans was inevi-
table, given the same engineering problems, evolution must
produce very similar answers. As witness the dolphin and
the shark - superficially almost identical, yet from far dis-
tant branches of the tree of life.
There was, however, one very obvious difference bet-
ween the fish of the Europan seas and those in terrestrial
oceans; they had no gills, for there was hardly a trace of
oxygen to be extracted from the waters in which they
swam Like the creatures around Earth's own geothermal
vents, their metabolism was based on sulphur compounds,
present in abundance in the near-volcanic environ-
ment.
And very few had eyes Apart from the flickering glow of
the rare lava outpourings, and occasional bursts of bio-
luminescence from creatures seeking mates, or hunters
questing prey, it was a lightless world.
It was also a doomed one. Not only were its energy
sources sporadic and constantly shifting, but the tidal forces
that drove them were steadily weakening. Even if they
developed true intelligence, the Europans must perish with
the final freezing of their world.
They were trapped between fire and ice.
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