Some definitions may be useful here. The most general concept--space power--can be defined as using the space medium and assets located in space to enhance and project U.S. military power. Space militarization describes a situation in which the military makes use of space in carrying out its missions. There is no question that space has been militarized; U.S. armed forces would have great difficulty carrying out a military mission today if denied access to its guidance, reconnaissance, and communications satellites. But to date, military systems in space are used exclusively as "force enhancers," making air, sea, and land force projection more effective. The issue now is whether to go beyond these military uses of space to space weaponization: the stationing in space of systems that can attack a target located on Earth, in the air, or in space itself. Arguably, space is already partially weaponized. The use of signals from Global Positioning System (GPS) satellites to guide precision weapons to their targets is akin to the role played by a rifle's gunsight. But there are not yet space equivalents of bullets to actually destroy or damage a target.

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Logsdon, John M. "Just Say Wait to Space Power." Issues in Science and Technology. Vol. 17, No. 3 (Spring 2001). [ 4 quotes ]