SFworld 版 (精华区)
发信人: by (春天的小懒虫), 信区: SFworld
标 题: 2010 (9)
发信站: 哈工大紫丁香 (Wed Oct 6 14:30:46 1999), 转信
9
The Ice of the Grand Canal
Apart from the jet-black sky, the photo might have been
taken almost anywhere in the polar regions of Earth; there
was nothing in the least alien about the sea of wrinkled ice
that stretched all the way out to the horizon. Only the five
spacesuited figures in the foreground proclaimed that the
panorama was of another world.
Even now, the secretive Chinese had not released the
names of the crew. The anonymous intruders on the frozen
Europan icescape were merely the chief scientist, the com-
mander, the navigator, the first engineer, the second en-
gineer. It was also ironic, Floyd could not help thinking,
that everyone on Earth had seen the already historic photo-
graph an hour before it reached Leonov, so much closer to
the scene. But Tsien's transmissions were relayed on such a
tight beam that it was impossible to intercept them; Leonov
could receive only its beacon, broadcasting impartially in all
directions. Even that was inaudible more than half the time,
as Europa's rotation carried it out of sight, or the satellite
itself was eclipsed by the monstrous bulk of Jupiter. All the
scanty news of the Chinese mission had to be relayed from
Earth.
The ship had touched down, after its initial survey, on
one of the few islands of solid rock that protruded through
the crust of ice covering virtually the entire moon. That ice
was flat from pole to pole; there was no weather to carve it
into strange shapes, no drifting snow to build up layer upon
layer into slowly moving hills. Meteorites might fall upon
airless Europa, but never a flake of snow. The only forces
moulding its surface were the steady tug of gravity, reduc-
ing all elevations to one uniform level, and the incessant
quakes caused by the other satellites as they passed and
repassed Europa in their orbits. Jupiter itself, despite its far
greater mass, had much less effect. The Jovian tides had
finished their work aeons ago, ensuring that Europa re-
mained locked forever with one face turned toward its giant
master.
All this had been known since the Voyager fly by missions
of the 1970s, the Galileo surveys of the 1980s, and the
Kepler landings of the 1990s. But in a few hours, the
Chinese had learned more about Europa than all the pre-
vious missions combined. That knowledge they were keep-
ing to themselves; one might regret it, but few would deny
that they had earned the right to do so.
What was being denied, with greater and greater asperity,
was their right to annex the satellite. For the first time in
history, a nation had laid claim to another world, and all-the
news media of Earth were arguing over the legal position.
Though the Chinese pointed out, at tedious length, that
they had never signed the '02 UN Space Treaty and so were
not bound by its provisions, that did nothing to quell the
angry protests.
Suddenly, Europa was the biggest news in the Solar
System. And the man-on-the-spot (at least to the nearest
few million kilometres) was in great demand.
'This is Heywood Floyd, aboard Cosmonaut Alexei Leonov,
on course for Jupiter. But as you can well imagine, all our
thoughts are now focused upon Europa.
'At this very moment I'm looking at it through the most
powerful of the ship's telescopes; under this magnification,
it's ten times larger than the Moon as you see it with the
naked eye. And it's a really weird sight.
'The surface is a uniform pink, with a few small brown
patches. It's covered with an intricate network of narrow
lines, curling and weaving in all directions. In fact, it looks
very much like a photo from a medical textbook, showing a
pattern of veins and arteries.
'A few of these features are hundreds -- or even thousands
-- of kilometres long, and look rather like the illusory canals
that Percival Lowell and other early-twentieth-century
astronomers imagined they'd seen on Mars.
'But Europa's canals aren't an illusion, though of course
they're not artificial. What's more, they do contain water --
or at least ice. For the satellite is almost entirely covered by
ocean, averaging fifty kilometres deep.
'Because it's so far from the sun, Europa's surface
temperature is extremely low - about a hundred and fifty
degrees below freezing. So one might expect its single ocean
to be a solid block of ice.
`Surprisingly, that isn't the case because there's a lot of
heat generated inside Europa by tidal forces - the same
forces that drive the great volcanoes on neighbouring
Io.
`So the ice is continually melting, breaking up, and freez-
ing, forming cracks and lanes like those in the floating ice
sheets in our own polar regions. it's that intricate tracery of
cracks I'm seeing now; most of them are dark and very
ancient - perhaps millions of years old. But a few are almost
pure white; they're the new ones that have just opened up,
and have a crust only a few centimetres thick.
`Tsien has landed right beside one of these white streaks -
the fifteen-hundred-kilometre-long feature that's been
christened the Grand Canal. Presumably the Chinese intend
to pump its water into their propellant tanks, so that they
can explore the Jovian satellite system and then return to
Earth. That may not be easy, but they'll certainly have
studied the landing site with great care, and must know
what they're doing.
`It's obvious, now, why they've taken such a risk - and
why they should claim Europa. As a refuelling point. It
could be the key to the entire outer Solar System. Though
there's also water on Ganymede, it's all frozen, and also
less accessible because of that satellite's more powerful
gravity.
`And there's another point that's just occurred to me,
Even if the Chinese do get stranded on Europa, they might
be able to survive until a rescue mission is arranged. They
have plenty of power, there may be useful minerals in the
area - and we know that the Chinese are the experts on
synthetic-food production. it wouldn't be a very luxurious
life; but I have some friends who would accept it happily for
that staggering view of Jupiter sprawled across the sky - the
view we expect to see ourselves, in just a few days.
`This is Heywood Floyd, saying goodbye for my col-
leagues and myself, aboard Alexei Leonov.'
`And this is the bridge. Very nice presentation,
Heywood. You should have been a newsman.'
`I've had plenty of practice. Half my time was spent on
PR work.'
`PR?'
`Public relations - usually telling politicians why they
should give me more money. Something you don't have to
bother about.'
`How I wish that was true. Anyway, come up to the
bridge. There's some new information we'd like to discuss
with you.'
Floyd removed his button microphone, locked the tele-
scope into position and extricated himself from the tiny
viewing blister. As he left, he almost collided with Nikolai
Ternovsky, obviously on a similar mission.
`I'm about to steal your best quotes for Radio Moscow,
Woody. Hope you don't mind.'
`You're welcome, tovarishch. Anyway, how could I stop
you?'
Up on the bridge, Captain Orlova was looking thought-
fully at a dense mass of words and figures on the main
display. Floyd had painfully started to transliterate them
when she interrupted him.
`Don't worry about the details. These are estimates of the
time it will take for Tsien to refill its tanks and get ready for
lift-off.'
`My people are doing the same calculations - but there are
far too many variables.'
`We think we've removed one of them. Did you know
that the very best water pumps you can buy belong to fire
brigades? And would you be surprised to learn that the
Beijing Central Station had four of its latest models sudden-
ly requisitioned a few months ago, despite the protests of
the mayor?'
`I'm not surprised - merely lost in admiration. Go on,
please.'
`That may be a coincidence, but those pumps would be
just the right size. Making educated guesses about pipe
deployment, drilling through the ice and so on - well, we
think they could lift off again in five days.'
`Five days!'
`If they're lucky, and everything works perfectly. And if
they don't wait to fill their propellant tanks but merely take
on just enough for a safe rendezvous with Discovery before
we do. Even if they beat us by a single hour, that would
be enough. They could claim salvage rights, at the very
least.'
`Not according to the State Department's lawyers. At the
appropriate moment, we'll declare that Discovery is not a
derelict, but has merely been parked until we can retrieve it.
Any attempt to take over the ship would be an act of piracy.'
`I'm sure the Chinese will be most impressed.'
`If they're not, what can we do about it?'
`We outnumber them - and two to one, when we revive
Chandra and Curnow.'
`Are you serious? Where are the cutlasses for the boarding
party?'
`Cutlasses?'
`Swords - weapons.'
`Oh. We could use the laser telespectrometer. That can
vaporize milligram asteroid samples at ranges of a thousand
kilometres.'
`I'm not sure that I like this conversation. My govern-
ment certainly would not condone violence, except of
course in self-defence.'
`You naive Americans! We're more realistic; we have to
be. All your grandparents died of old age, Heywood. Three
of mine were killed in the Great Patriotic War.'
When they were alone together, Tanya always called him
Woody. never Heywood. She must be serious. Or was she
merely testing his reactions?
`Anyway, Discovery is merely a few billion dollars worth
of hardware. The ship's not important - only the informa-
tion it carries.'
`Exactly. Information that could be copied, and then
erased.'
'You do get some cheerful ideas, Tanya. Sometimes I
think that all Russians are a little paranoiac.'
`Thanks to Napoleon and Hitler, we've earned every
right to be. But don't tell me that you haven't already
worked out that - what do you call it, scenario? - for
yourself'
`It wasn't necessary,' Floyd answered rather glumly. `The
State Department's already done it for me-with variations.
We'll just have to see which one the Chinese come up with.
And I wouldn't be in the least surprised if they outguess us
again.'
--
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