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From: ethan@utastro.UUCP (Ethan Vishniac)
Newsgroups: net.sf-lovers
Subject: Re: What the Visitors came for
Message-ID: <357@utastro.UUCP>
Date: Mon, 15-Jul-85 10:29:59 EDT
Article-I.D.: utastro.357
Posted: Mon Jul 15 10:29:59 1985
Date-Received: Wed, 17-Jul-85 21:02:08 EDT
References: <2711@topaz.ARPA>
Organization: U. Texas, Astronomy, Austin, TX
Lines: 22

Actually I neither know nor care what the Visitors came for.  However..
> 
> >> Isaac Asimov wrote a book in whichthe plot traced an expedition
> >> from Mars to Jupiter to acquire water.
> >
> > Wasn't that Saturn ?
> 
> The story (novelette) is "The Martian Way", and the expedition went
> to the asteroid belt, I believe.  (Makes more sense than Jupiter or
> Saturn, doesn't it?  I could be wrong, however; I don't have a copy
> of the story.)

Sorry, but you are wrong.  The expedition went to the rings of Saturn.
The water content of asteroids is probably very small.  The moons of
Jupiter have lots of water, but Asimov implied that even a modest
gravitational field would have been a problem.
-- 

"Don't argue with a fool.      Ethan Vishniac
 Borrow his money."            {charm,ut-sally,ut-ngp,noao}!utastro!ethan
                               Department of Astronomy
                               University of Texas