SASSA, the Military's New Satellite Self-Defense System

A new satellite defense technology is about to get its first real-world test in orbit, and while we naturally don’t get to know much about it just yet, the Air Force has confirmed that a classified satellite launching sometime in the near future will carry the awkwardly named Self-Awareness Space Situational Awarenessksystem, or SASSA. Like radar for satellites, the system will alert operators of potential space-borne threat to the satellite and perhaps even take kinetic action should a satellite become threatened.