Originally posted by Cartesian Doubt
Actually it doesn't really matter in which direction you try and pull the Earth, once its in orbit it stays there. This is because when in Orbit the planet is revolving in a 4 Dimensional "trench". Getting the planet out of the trench is the hard bit, once out; the power needed to move the planet decreases immensely. In other words the Star breaker is pulling the planet out of the 4D trench, Superman and Hal are using the potential energy of the "trench", as well as their own power to restore it.
Again you're misunderstanding. The Earth's mass warping space causes the trench it doesn't leave it behind when moved.
Besides newtonian physics is perfectly sufficient to describe this situation. There's no need to overly complicatye things.