SFworld 版 (精华区)
发信人: by (春天的小懒虫), 信区: SFworld
标 题: 2010 (46)
发信站: 哈工大紫丁香 (Wed Oct 6 15:22:34 1999), 转信
46
Countdown
No one would ever believe this without my photos.
thought Max Brailovsky as he orbited the two ships from
half a kilometre away. It seems comically indecent, as it-
Leonov is raping Discovery. And now that he came to think
Of it, the rugged, compact Russian ship did look positively
male, when compared with the delicate, slender American
one. But most docking operations had distinctly sexual
overtones, and he remembered that one of the early cosmo-
nauts - he couldn't recall the name - had been reprimanded
for his too vivid choice of words at the - er, climax of his
mission.
As far as he could tell from his careful survey, everything
was in order. The task of positioning the two ships and
securing them firmly together had taken longer than antici-
pated. It would never have been possible at all without one
of those strokes of luck that sometimes - not always -
favour those who deserve them. Leonov had providentially
carried several kilometres of carbon filament tape, no bigger
than the ribbon a girl might use to tie her hair, yet capable of
taking a strain of many tons. It had been thoughtfully
provided to secure instrument packages to Big Brother if all
else failed. Now it wrapped Leonov and Discovery in tender
embrace - sufficiently firmly, it was hoped, to prevent any
rattlings and shakings at all accelerations up to the one-tenth
of a gravity that was the maximum that full thrust could
provide.
`Anything more you want me to check before I come
home?' asked Max.
`No,' replied Tanya. `Everything looks fine. And we
can't waste any more time.'
That was true enough. If that mysterious warning was to
be taken seriously-and everyone now took it very seriously
indeed - they should start their escape manoeuvre within
the next twenty-four hours.
`Right-I'm bringing Nina back to the stable. Sorry about
this, old girl.'
`You never told us Nina was a horse.'
`I'm not admitting it now. And I feel bad about dumping
her here in space, just to give us a miserable few extra metres
per second.'
`We may be very glad of them in a few hours, Max.
Anyway, there's always a chance that someone may come
and pick her up again, one day.'
I very much doubt it, thought Max. And perhaps, after
all, it was appropriate to leave the little space pod there, as a
permanent reminder of Man's first visit to the kingdom of
Jupiter.
With gentle, carefully timed pulses from the control jets
he brought Nina around the great sphere of Discovery's main
life-support module; his colleagues on the flight deck barely
glanced at him as he drifted past their curving window. The
open Pod Bay door yawned before him, and he jockeyed
Nina delicately down on to the extended docking arm.
`Pull me in,' he said, as soon as the latches had clicked
shut. `I call that a well-planned EVA. There's a whole
kilogram of propellant left to take Nina out for the last
time.'
Normally, there was little drama about a burn in deep space;
it was not like the fire and thunder-and always present risks
- of a lift-off from a planetary surface. If something went
wrong, and the motors failed to come up to full thrust -
well, matters could usually be corrected by a slightly longer
burn. Or one could wait until the appropriate point in orbit.
and try again.
But this time, as the countdown proceeded toward zero,
the tension aboard both ships was almost palpable. Every-
one knew that it was the first real test of Hal's docility; only
Floyd, Curnow, and the Orlovs realized that there was a
back-up system. And even they were not absolutely sure
that it would work.
`Good luck, Leonov,' said Mission Control, timing the
message to arrive five minutes before ignition. `Hope
everything's running smoothly. And if it's not too much
trouble, could you please get some close-ups of the equator,
longitude 115, as you go around Jupiter. There's a curious
dark spot there - presumably some kind of upwelling,
perfectly round, almost a thousand kilometres across.
Looks like the shadow of a satellite, but it can't be.'
Tanya made a brief acknowledgment that managed to
convey, in a remarkably few words, a profound lack of
interest in the meteorology of Jupiter at that moment.
Mission Control sometimes showed a perfect genius for
tactlessness and poor timing.
`All systems functioning normally,' said Hal. `Two
minutes to ignition.'
Strange, thought Floyd, how terminology often survives
long after the technology that gave it birth. Only chemical
rockets were capable of ignition; even if the hydrogen in a
nuclear or plasma drive did come into contact with oxygen,
it would be far too hot to burn. At such temperatures, all
compounds were stripped back into their elements.
His mind wandered, seeking other examples. People -
particularly older ones - still spoke of putting film into a
camera, or gas into a car. Even the phrase `cutting a tape'
was still sometimes heard in recording studios - though that
embraced two generations of obsolete technologies,
`One minute to ignition.'
His mind flashed back to the here and now. This was the
minute that counted; for almost a hundred years, on launch
pads and in control centres, this was the longest sixty
seconds that had ever existed. Countless times it had ended
in disaster; but only the triumphs were remembered. Which
will ours be?
The temptation to put his hand once more into the pocket
that held the activator for the cut-out switch was almost
irresistible, even though logic told him there was plenty of
time for remedial action. If Hal failed to obey his program-
ming, that would be a nuisance - not a disaster. The really
critical time would be when they were rounding Jupiter.
'Six... five... four... three... two... one...
IGNITION!'
At first, the thrust was barely perceptible; it took almost a
minute to build up to the full tenth of a gee. Nevertheless,
everyone started clapping immediately, until Tanya signal-
led for silence. There were many checks to be made; even if
Hal was doing his best-as he certainly seemed to be - there
was so much that could still go wrong.
Discovery's antenna mount - which was now taking most
of the strain from Leonov's inertia - had never been intended
for such mistreatment. The ship's chief designer, called out
of retirement, had sworn that the safety margin was ade-
quate. But he might be wrong, and materials had been
known to become brittle after years in space.
And the tapes holding the two ships together might not
have been located accurately; they might stretch- or slip.
Discovery might not be able to correct for the off-centre of
mass, now that it was carrying a thousand tons piggyback.
Floyd could imagine a dozen things that could go wrong; it
was little consolation to remember that it was always the
thirteenth that actually happened.
But the minutes dragged on uneventfully; the only proof
that Discovery's engines were operating was the fractional,
thrust-induced gravity and a very slight vibration transmit-
ted through the walls of the ships. Io and Jupiter still hung
where they had been for weeks, on opposite sides of the sky.
`Cut-off in ten seconds. Nine... eight... seven . .. six
... five... four... three... two... NOW!'
`Thank you, Hal. On the button.'
Now that was another phrase that was badly dated; for at
least a generation, touch pads had almost entirely replaced
buttons. But not for all applications; in critical cases, it was
best to have a device that moved perceptibly with a nice,
satisfying click.
`I confirm that,' said Vasili. `No need for any corrections
until mid-course.'
`Say goodbye to glamorous, exotic Io - real estate agent's
dream world,' said Curnow. `We'll all be happy to miss
you.'
That sounds more like the old Walter, Floyd told himself.
For the last few weeks, he had been oddly subdued, as if he
had something on his mind. (But who did not?) He seemed
to spend a good deal of his scanty free time in quiet discus-
sions with Katerina: Floyd hoped that he had not developed
some medical problem. They had been very lucky so far on
that score; the last thing they needed at this stage was
an emergency that required the Surgeon-Commander's
expertise.
`You're being unkind, Walter,' said Brailovsky. `I was
beginning to like the place. It might be fun to go boating on
those lava lakes.'
`What about a volcano barbecue?'
`Or genuine molten sulphur baths?'
Everyone was lighthearted, even a little hysterical with
relief. Though it was far too early to relax and the most
critical phase of the escape manoeuvre still lay ahead, the
first step had been safely taken on the long journey home.
That was cause enough for a little modest rejoicing.
It did not last long, for Tanya quickly ordered all those
not on essential duty to get some rest - if possible, some
sleep - in preparation for the Jupiter swing-by only nine
hours ahead. When those addressed were slow to move,
Sasha cleared the decks by shouting, `You'll hang for this,
you mutinous dogs!' Only two nights before, as a rare
relaxation, they had all enjoyed the fourth version of Mutiny
on the Bounty, generally agreed by movie historians to have
the best Captain Bligh since the fabled Charles Laughton.
There was some feeling on board that Tanya should not
have seen it, lest it give her ideas.
After a couple of restless hours in his cocoon, Floyd
abandoned the quest for sleep and wandered up to the
observation deck. Jupiter was much larger and slowly wan-
ing as the ships hurtled toward their closest approach over
the nightside. A glorious, gibbous disk, it showed such an
infinite wealth of detail - cloud belts, spots of every colour
from dazzling white to brick red, dark upwellings From the
unknown depths, the cyclonic oval of the Great Red Spot -
that the eye could not possibly absorb it all. The round, dark
shadow of one moon - probably Europa, Floyd guessed -
was in transit. He was seeing this incredible sight for the
last time; even though he had to be at maximum efficiency
in six hours, it was a crime to waste precious moments in
sleep.
Where was chat spot that Mission Control had asked
them to observe? It should have been coming into view, but
Floyd was not sure if it would be visible to the naked eye.
Vasili would be too busy to bother about it; perhaps he
could help by doing a little amateur astronomy. There had,
after all, been a brief time, only thirty years ago, when he
had earned his living as a professional.
He activated the controls of the main fifty-centimetre
telescope - fortunately, the field of view was not blocked by
the adjacent bulk of Discovery - and scanned along the
equator at medium power. And there it was, just coming
over the edge of the disk.
By force of circumstance, Floyd was now one of the Solar
System's ten greatest experts on Jupiter; the other nine were
working or sleeping around him. He saw at once that there
was something very odd about this spot; it was so black that
it looked like a hole punched through the clouds. From his
point of view it appeared to be a sharp-edged ellipse; Floyd
guessed that from directly above, it would be a perfect
circle.
He recorded a few images, then increased the power to
maximum. Already Jupiter's rapid spin had brought the
formation into clearer view; and the more he stared, the
more puzzled Floyd became.
`Vasili,' he called over the intercom, `if you can spare a
minute - have a look at the fifty-centimetre monitor.'
`What are you observing? Is it important? I'm checking
the orbit.'
`Take your time, of course. But I've found that spot
Mission Control reported. It looks very peculiar.'
`Hell! I'd forgotten all about it. We're a fine lot of obser-
vers if those guys back on Earth have to tell us where to
look. Give me another five minutes - it won't run away.'
True enough, thought Floyd; in fact it will get clearer.
And there was no disgrace in missing something that ter-
restrial - or lunar - astronomers had observed. Jupiter was
very big, they had been very busy, and the telescopes on the
Moon and in Earth orbit were a hundred times more power-
ful than the instrument he was using now.
But it was getting more and more peculiar. For the first
time, Floyd began to feel a distinct sense of unease. Until
that moment, it had never occurred to him that the spot
could be anything but a natural formation - some trick of
Jupiter's incredibly complex meteorology. Now he began
to wonder.
It was so black, like night itself. And so symmetrical; as it
came into clearer view it was obviously a perfect circle. Yet
it was not sharply defined; the edge had an odd fuzziness, as
if it was a little out of focus.
Was it imagination, or had it grown, even while he was
watching? He made a quick estimate, and decided that the
thing was now two thousand kilometres across. It was only
a little smaller than the still-visible shadow of Europa, but
was so much darker that there was no risk of confusion.
`Let's have a look,' said Vasili, in a rather condescending
tone. `What do you think you've found? Oh...'His voice
trailed away into silence.
This is it, thought Floyd, with a sudden icy conviction.
Whatever it-may be...
--
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