Checkout Electrodynamic Tethers for an interesting magnetic propulsion system in planetary orbit. http://en.wikipedia.org/wiki/Electrodynamic_tether http://en.

Checkout Electrodynamic Tethers for an interesting magnetic propulsion system in planetary orbit. http://en.wikipedia.org/wiki/Electrodynamic_tether http://en.wikipedia.org/wiki/Electrodynamic_tether