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No this is the ship/drive from _A World out of Time_ that is dropped in Neptune's atmosphere which it uses for fusion fuel, given enough time they fly Neptune around to change orbits of other planets.In article <[EMAIL PROTECTED]>, John M. Gamble <[EMAIL PROTECTED]> writesIn article <[EMAIL PROTECTED]>, aRJay <[EMAIL PROTECTED]> wrote:In article <[EMAIL PROTECTED]>, RobertCarnegie<[EMAIL PROTECTED]> writesIn article <[EMAIL PROTECTED] 9.154.205>, Don D'Ammassa <[EMAIL PROTECTED]> writes
Ditto David Bergantino. In Venus Development, he moves Venus to a more pleasant orbit by landing hundreds of spaceships on one side of the planet, then turning on all their thrusters at once to push the planet into its new orbit.
If you're E. E. 'Doc' Smith, that's a plan.
Larry Niven only needed one ship using the basics of this idea to re-arrange the solar system.
For some definitions of "ship".
Hang on. I know the Niven short where the guy's big idea to maximise the crew's expected survival is to make the tide-locked future Earth habitable by restarting its rotation and recovering the frozen air and water from the night-side. But this isn't that?
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