Well it would be easier to move a moon of smaller mass and with less gravity pulling on it then it would be to move a planet.* But if the planet were to capture a moon, it would allow the rotation to be increased to better suit life.* The increase in rotation along with the introduction of water...
Wow, so I'm not crazy. There must be a way to produce such energy, I guess it won't be until antimatter is readily available that such things can be attempted. BTW is Starmaker a good book to read?
Is it possible to move the planets Mars and Venus from their current orbits to ones more likely to support life, or at least have liquid water on their surface. The only idea I can imagine is to "steal" moons from the gas giant planets and put them on a path to be captured by the gravity of the...