ABM Anti Ballistic Missile
ABMA Army Ballistic Missile Agency
ABMDA Army Ballistic Missile Development Agency
ABRES Advanced Ballistic Re-Entry Systems
ACRIMSAT Active Cavity Radiometer Irradiance Monitor SATellite
ACRV Assured Crew Return Vehicle
ACS Attitude Control System
ADCCC Astrophysics Data Centers Coordinating Council
ADE Air Density Explorer
ADRG ARC Digitized Raster Graphics
AE Atmosphere Explorer
AEC Atomic Energy Commission
AEM Animal Enclosure Module
AESOP Artificial Earth Satellite Observation Program
AFAC Air Force Armament Center
AFBMD Air Force Ballistic Missile Division
AFCS Adaptative Flight Control System
AFETR Air Force Eastern Test Range
AFMDC Air Force Missile Development Center
AFMTC Air Force Missile Test Center
AFOAR Air Force Office of Aerospace Research
AFOAS Air Force Office of Aerospace Sciences
AFOSR Air Force Office of Scientific Research
AFRL Air Force Research Laboratory
AFSATCOM Air Force Satellite Communications system
AFSCN Air Force Satellite Control Network
AFSWC Air Force Special Weapons Center
AGAA Altitude Gyro Accelerometer Assembly
AGACS Automatic Ground to Air Communications System
AHP Airglow Horizon Photography
AIAA American Institute of Aeronautics and Astronautics
AICBM Anti-ICBM
AIDAA Associazione Italiana Di Aeronautica e Astronàutica
AIMS Army Integrated Meteorological System
AIS American Interplanetary Society
AIT Atmospheric Interceptor Technology
AL Ames Laboratory
ALBI Air Launched Ballistic Intercept
ALBM Air Launched Ballistic Missile
ALEXIS Array of Low-Energy X-ray Imaging Sensors
ALFLEX Automatic Landing FLight EXperiment
ALOTS Airborne Lightweight Optical Tracking System
ALSEP Apollo Lunar Surface Experiments Package
AMA Aerospace Medical Association
AMC Aerospace Medical Center
AMC Agena Micrometeorite Collection
AMI Active Microwave Instrument
AML Aero Medical Laboratory
AMM Anti Missile Missil
AMOS Automatic Meteorological Observing Stations
AMPTE Active Magnetospheric Particle Tracer Explorers
AMRI Association of Missile and Rocket Industries
AMS Advanced Meteorological Satellite
AMS Alpha Magnetic Spectrometer
AMS Army Map Service
AMSAM Anti Missile Surface to Air Missile
AMSAT AMateur SATellite
AMTC Army Missile Test Center
AMU Astronaut Maneuvering Unit
ANNA Air force, Navy, Nasa, Army
ANS Astronomical Netherlands Satellite
AO Amsat-Oscar
AOS Adquisition Of Signal
APCF Advanced Protein Crystallization Facility
APCS Air Photographic and Charting Service
APEX Advanced Photovoltaic and Electronic eXperiments
APGC Air Proving Ground Center
APP Atomic Pulse Propulsion
APPLE Ariane Passenger PayLoad Experiment
APT Automatic Picture Transmission
APU Auxiliary Power Units
ARC Ames Research Center
ARD Atmospheric Reentry Demonstrator
ARDC Air Research and Development Command
ARENTS ARpa ENvironmental Test Satellite
ARGMA Army Rocket and Guided Missile Agency
ARIP Automatic Rocket Impact Predictor
ARMS Advanced Respiratory Monitoring System
ARPA Advanced Research Projects Agency
ARS Aerosym Rescare Satellite
ARS American Rocket Society
ARSENE Ariane Radio-astronome Satellite ENseignement Espace
ASC American Satellite Company
ASCC Alternate Space Control Center
ASCM Anti-Ship Cruise Missile
ASEPS Astronomical Studies of Extrasolar Planetary Systems
ASI Agenzia Spaziale Italiana
ASI Alcatel Space Industries
ASIS Abortion Sensibility and Implementation System
ASM Air to Surface Missile
ASP AeroSpace Plane
ASPADOC Alternate SPAce Defense Operations Center
AST Asia Satellite Telecommunication
ASTEX Advanced Space Technology Experiments
ASTIA Armed Services Technical Information Agency
ATBM Anti Tactical Ballistic Missile
ATDA Agena Target Docking Adapter
ATEX Advanced Tether EXperiment
ATLAS Atmospheric Laboratory for Applications and Science
ATM Apollo Telescope Mount
ATS Advanced Technological Satellite
ATS Applications Technology Satellite
AV Astronaut Visibility
AVCS Advanced Vidicon Camera System
AVGS Advanced Video Guidance Sensor
AXAF Advanced X-ray Astrophysics Facility
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