On Feb 1, 2:15 pm, CoryG <c...@geesaman.com> wrote:
> Well, the simplest method to give a planet-size magnetic field to Mars
> would probably be to shoot the moon at it (probably about the same
> cost energy-wise as collecting and bombarding the planet with
> asteroids - but asteroids probably couldn't impart enough energy at
> once to form a molten core) - probably better, one of Saturn's moons
> might have the necessary chemicals that combining the two would yield
> a suitable planet.
I would think it would be much 'cheaper' to bring one of Saturn's
moons or an asteroid in than to push the moon out. Certainly asteroids
provide the most control and/or fault tolerance. WRT 'restarting the
core' should we be so concerned with mass? Let the Sun's gravity
handle most of the v-squared part and worry less about the m?
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