The invention provides a reconfigurable reaction wheel for a spacecraft, a spacecraft, and a method of using the reconfigurable reaction wheel to control the movement of a spacecraft. The reaction wheel includes a reaction wheel housing, a flywheel rotatably disposed in the housing and an electric motor operably coupled to the flywheel. The electric motor includes a plurality of electrical windings. The motor is adapted and configured to operate in a first selectable operating state wherein the windings are arranged in a first electrical configuration, and a second selectable operating state wherein the windings are arranged in a second electrical configuration different from the first electrical configuration.

 
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