Electromagnetic formation flight investigates the concept of using electromagnets coupled with reaction wheels in place of more traditional propulsion systems to control the positions and attitudes of a number of spacecraft in close proximity. Unlike traditional propulsion systems, which use exhaustible propellants that often limit lifetime, the EMFF system uses solar power to energize a magnetic field. The Massachusetts Institute of Technology Space Systems Laboratory is exploring this concept by developing dynamics and control models as well as an experimental testbed for their validation.