LANDSAT Earth resources satellite LEO Low Earth orbit LOS Line-of-sight LPRE Laser-powered rocket engine LRSS (Comprehensive) long-range space surveillance LTV Lunar transfer vehicle MAD Mutual assured destruction MCC Mission control center MDRE Mass driver reaction engine MeV 10b electron volts MHD Magnetohydrodynamics MHz Megahertz MOS Metal oxide semiconductor MR Maintenance and repair MUF Maximum usable frequencies mW Milliwatt MW Megawatt prad Microradian (10 radian) n Neutrons NaK Sodium/potassium, used as a coolant NASA U.S. National Aeronautics and Space Administration NATO North Atlantic Treaty Organization NAV Navigation NAVSTAR U.S. (military) navigation satellite system NCA National Command Authority NEARSAT Hostile satellite maintained close to a given satellite or space station NORAD North American Air Defense Command NTM Nonterrestrial materials NTMV "National technical means of verification" (SALT euphemism for surveillance and reconnaissance satellites) OAS Organization of American States 01 Orbital interceptor O&M Operations and maintenance 0-0 Orbit-to-orbit OPEC Organization of Petroleum Exporting Countries OTEC Ocean thermal energy conversion OTV Orbital transfer vehicle PBW Particle beam weapon PLV Personnel launch vehicle PM Personnel management POTV Personnel orbital transfer vehicle PRC People's Republic of China Prox. International agreements on proximity rules in space
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