Re: All the water in the world



In article <RSp$WGCJTRaIFw47@xxxxxxxxxxxxxxxxxx>,
Mike Williams <nospam@xxxxxxxxxxxxxxxxxx> wrote:
Wasn't it SolomonW who wrote:

I would be quite surprised at the 21st century if we would not be able
to do that. Move around an asteroid full of ice and bring it crushing
down on a planet like Venus.

Asteroids are made of rock or metal, not ice. What you probably want is
comets.

http://www.skyandtelescope.com/news/3311316.html?c=y&showAll=y

And if I recall correctly, one model of Ceres has up to 25% being
water.

One could also look at the icy bodies orbiting gas giants,
which may have lower delta vees for transfer orbits thanks to the
proximity of the gas giant. There's a sort of sweet spot involved,
where being in orbit around a gas giant is handy but being in close
orbit isn't.

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