Re: Might it be an opportunity?
Surely it doesn't have to be that strong or large if it were placed in the correct place between the sun and mars, like a small magnetic lens which simply deflects the trajectories by a smidgeon. A tiny angle of deflection would equate to planet sized displacements far away.
Also using superconductor coils would be my recommendation as opposed to masses of iron as it's bloody cold out there and superconductors love the cold.
Don't really understand the down votes. But hey ho, half of all people are less than average intelligence. What is to understand about stupidity?