| AA |
Associate Administrator |
| AAD |
Aircraft Aging and Durability |
| ACCESS |
Advanced Collaborative Connections for Earth System Science |
| ACE |
Advanced Composition Explorer |
| ACRIMSat |
Active Cavity Radiometer Irradiance Monitor Satellite |
| ADCAR |
Astrophysics Data Curation and Archival Research |
| AEDC |
Arnold Engineering Development Center |
| AESP |
Aerospace Education Services Program |
| AFB |
Air Force Base |
| AFOSR |
Air Force Office of Scientific Research |
| AFRL |
Air Force Research Laboratory |
| AISR |
Applied Information Systems Research |
| AITS |
Agency Information Technology Services |
| ALI |
Advanced Land Imager |
| AMM |
Aircraft Management Module |
| AMMOS |
Advanced Multi-Mission Operations System |
| AMMP |
Aircraft Maintenance and Modification Program |
| AMO |
Agency Management and Operations |
| AMS |
Alpha Magnetic Spectrometer |
| AMSR-E |
Advanced Microwave Scanning Radiometer for the Earth Observing System |
| AO |
Announcement of Opportunity |
| APG |
Annual Performance Goal |
| APL |
Applied Physics Laboratory (Johns Hopkins University) |
| APPEL |
Academy of Program/Project and Engineering Leadership |
| APR |
Annual Performance Report |
| ARC |
Ames Research Center |
| ARISS |
Amateur Radio on the International Space Station |
| ARMD |
Aeronautics Research Mission Directorate |
| AS&T |
Aeronautics Science and Technology |
| ASAP |
Aerospace Safety Advisory Panel |
| ASI |
Agenzia Spaziale Italiana (Italian Space Agency) |
| ASP |
Airspace Systems Program |
| ASPERA-3 |
Analyzer of Space Plasma and Energetic Atoms-3 |
| ASR |
Aviation Safety Report |
| ASRG |
Advanced Stirling Radioisotope Generator |
| ASSP |
Architecture for Survivable System Processing |
| AST |
Advanced Subsonic Technology |
| ATLO |
Assembly, Test and Launch Operations |
| ATM |
Air Traffic Management |
| ATMS |
Advanced Technology Microwave Sounder (NPOESS Preparatory Project instrument) |
| ATP |
Aeronautics Test Program |
| ATV |
Automated Transfer Vehicle |
| AU |
Astronomical unit |
| AvSa |
Aviation Safety |
| AvSP |
Aviation Safety Program |
| BARREL |
Balloon Array for Radiation-belt Relativistic Electron Losses |
| BATC |
Ball Aerospace and Technology Corporation |
| BCP |
Ball Commercial Platform |
| BE |
Beyond Einstein |
| BEPAC |
Beyond Einstein Program Assessment Committee |
| C&DH |
Command and Data Handling |
| C/NOFS |
Communication/Navigation Outage Forecast System |
| C3S |
Command, Control, and Communication Segment |
| CAEP |
Committee on Aviation Environmental Protection |
| CALIPSO |
CloudAerosol Lidar and Infrared Pathfinder Satellite Observations |
| CAPTEM |
Curation and Analysis Planning Team for Extraterrestrial Materials |
| CAS |
Cross-Agency Support |
| CAST |
Commercial Aviation Safety Team |
| CCD |
Charge Coupled Device |
| CDC |
Centers for Disease Control |
| CDI |
Congressionally Directed Items |
| CDR |
Critical Design Review |
| CERES |
Clouds and the Earth's Radiant Energy System |
| CESR |
Centre d'Etude Spatiale des Rayonnements |
| CFD |
Computational Fluid Dynamics |
| CFO |
Chief Financial Officer |
| ChemCam |
Chemistry Camera |
| CheMin |
Chemistry & Mineralogy Instrument |
| CHS |
Crew Health and Safety |
| CI |
Counter-intelligence |
| CINDI |
Coupled Ion Neutral Dynamics Investigation |
| CIO |
Chief Information Officer |
| CIPAIR |
Curriculum Improvement Partnership Award for the Integration of Research |
| CLARREO |
Climate Absolute Radiance and Refractivity Observatory |
| CM&O |
Center Management and Operations |
| CMB |
Cosmic Microwave Background |
| CMC |
Cargo Mission Contract |
| CME |
Continuing Medical Education |
| CME |
Coronal Mass Ejection |
| CMO |
Center Management and Operations |
| CO |
Carbon Monoxide |
| CO-OP |
Cooperative-Education |
| CO2 |
Carbon Dioxide |
| CoF |
Construction of Facilities |
| CONAE |
Argentinas National Committee of Space Activities |
| CoNNeCT |
Communication Navigation and Networking Reconfigurable Testbed |
| COTF |
Classroom of the Future |
| COTR |
Contracting Officer Technical Representative |
| COTS |
Commercial Orbital Transportation Services |
| CRI |
Center for Rotorcraft Innovation |
| CSA |
Canadian Space Agency |
| CSAR |
Cost and Schedule Analysis Report |
| CT |
Counter-terrorism |
| CY |
Calendar Year |
| CZAP |
Center Zoned Architecture Project |
| DAAC |
Distributed Active Archive Centers |
| DAN |
Dynamic Albedo of Neutrons |
| DAP |
Data Analysis Program |
| DCAA |
Defense Contract Audit Agency |
| DCAS |
Defense Contract Audit Service |
| DESDynl |
Deformation, Ecosystem Structure, and Dynamics of Ice |
| DFRC |
Dryden Flight Research Center |
| DLN |
Digital Learning Network |
| DOD |
Department of Defense |
| DOE |
Department of Energy |
| DOI |
Department of Interior |
| DRS |
Disturbance Reduction System |
| DSN |
Deep Space Network |
| DTN |
Disruption Tolerant Networking |
| E&PO |
Education and Public Outreach |
| EA |
Enterprise Architecture |
| EarthKAM |
Earth Knowledge Acquired by Middle School Students |
| ECAM |
Experiment Camera |
| ECLSS |
Environmental Control and Life Support System |
| ECR |
Environmental Compliance and Restoration |
| ECT |
Energetic Particle, Composition and Thermal Plasma |
| ED |
Education |
| EDL |
Entry, Descent, and Landing |
| EDMD |
Exploration Technology Development Program |
| EEE |
Evolution of EOSDIS Elements |
| EELV |
Evolved Expendable Launch Vehicle |
| EEO |
Equal Employment Opportunity |
| EF |
Exposed Facility |
| EFASC |
Electric Field and Search Coil |
| EFPO |
Education Flight Projects |
| EFW |
ic Field and Waves |
| EIS |
Extreme Ultraviolet Imaging Spectrometer |
| EJSM |
Europa Jupiter System Mission |
| ELV |
Expendable Launch Vehicle |
| EMFISIS |
Electric and Magnetic Field Instrument Suite and Integrated Science |
| EOS |
Earth Observing System |
| EOSDIS |
Earth Observing System Data and Information System |
| EPA |
Environmental Protection Agency |
| EPN |
Effective Perceived Noise |
| EPNdB |
Effective Perceived Noise in Decibels |
| EPOCh |
Extrasolar Planet Observations and Characterization |
| EPSCoR |
Experimental Program to Stimulate Competitive Research |
| ERA |
Environmentally Responsible Aviation |
| ESA |
European Space Agency |
| ESD |
Earth Science Division |
| ESDR |
Earth System Data Records |
| ESM |
Earth Systematic Missions |
| ESMD |
Exploration Systems Mission Directorate |
| ESSP |
Earth System Science Pathfinder |
| ESTO |
Earth Science Technology Office |
| ESTP |
Earth Science Technology Program |
| ET |
External Tank |
| ETD |
Exploration Technology Development |
| ETDP |
Exploration Technology Development Program |
| ETM |
Enhanced Thematic Mapper |
| EUV |
Extreme-Ultraviolet |
| EXEP |
Exoplanet Exploration Program |
| FA |
Fundamental Aeronautics |
| FAA |
Federal Aviation Administration |
| FAP |
Fundamental Aeronautics Program |
| FAR |
Federal Acquisition Regulation |
| FAST |
Facilitated Access to the Space Environment for Technology Development and Training |
| FCIP |
Federal Career Intern Program |
| FGS |
Fine Guidance Sensor |
| FLIT |
First Light Infrared Test |
| FMI |
Finnish Meteorological Institute |
| FOC |
Full Operational Capability |
| FPA |
Focal Plane Array |
| FPP |
Focal Plane Package |
| FS |
First Stage |
| FY |
Fiscal Year |
| GALEX |
Galaxy Evolution Explorer |
| GCCE |
Global Climate Change Education |
| GCRP |
Global Change Research Program |
| GEO |
Geosynchronous Earth Orbit |
| GES DAAC |
GSFC Earth Science Distributed Active Archive Center |
| GI |
Guest Investigator |
| GISS |
Goddard Institute for Space Studies |
| GLOBE |
Global Learning and Observations to Benefit the Environment |
| GMAO |
Global Modeling and Assimilation Office |
| GN |
Ground Networks |
| GO |
Ground Operations |
| GOES |
Geostationary Operational Environmental Satellite |
| GPM |
Global Precipitation Measurement |
| GPS |
Global Positioning System |
| GRACE |
Gravity Recovery and Climate Experiment |
| GRAIL |
Gravity Recovery and Interior Laboratory |
| GRB |
Gamma Ray Burst |
| GRC |
Glenn Research Center |
| GRC-PBS |
Glenn Research CenterPlum Brook Station |
| GREAT |
German Receiver for Astronomy at Terahetz |
| GRGT |
Guam Remote Ground Terminal |
| GS |
Ground Support |
| GSFC |
Goddard Space Flight Center |
| GWAC |
Government Wide Acquisition Contracts |
| HBCU |
Historically Black Colleges and Universities |
| HCIE |
Human Capital Information Environment |
| HECC |
High End Computing Capability |
| HgCdTe |
Mercury-Cadmium-Telluride |
| HIPO |
High-speed Imaging Photometer for Occultation |
| HIRES |
High Resolution Echelle Spectrometer |
| HPS |
Heliophysics Subcommittee |
| HQ |
NASA Headquarters |
| HR |
Human Resource |
| HRP |
Human Research Program |
| HSB |
Humidity Sounder for Brazil |
| HSFO |
Human Space Flight Operations |
| HSPD |
Homeland Security Presidential Directive |
| HSR |
High-Speed Research |
| HST |
Hubble Space Telescope |
| HTV |
H-II Transfer Vehicle |
| HVAC |
Heating, Ventilating and Air Conditioning |
| HWB |
Hybrid Wing Body |
| I&T |
Integration and test |
| IAM |
Integrated Asset Management |
| IBEX |
Interstellar Boundary Explorer |
| ICAO |
International Civil Aviation Organization |
| ICESat |
Ice, Cloud, and Land Elevation Satellite |
| IDIQ |
Indefinite Delivery Indefinite Quantity |
| IDPS |
Interface Data Processing Segment |
| IDS |
Interdisciplinary Science |
| IEMP |
Integrated Enterprise Management Program |
| IG |
Inspector General |
| IIFD |
Integrated Intelligent Flight Deck |
| ILN |
International Lunar Network |
| INPE |
Brazilian Institute for Space Research |
| INSPIRE |
Interdisciplinary National Science Program Incorporating Research and Education Experiences |
| IOM |
Institute of Medicine |
| IP |
Intellectual Property |
| IPO |
Integrated Program Office |
| IPP |
Innovative Partnerships Program |
| IPS |
Integrated Planning System |
| IR |
Infrared |
| IRA |
Institutional Research Awards |
| IRM |
Information Resources Management |
| IRT |
Independent Review Team |
| ISIM |
Integrated Science Instrument Module |
| ISM |
Interstellar Medium |
| ISRP |
Integrated Systems Research Program |
| ISS |
International Space Station |
| IT |
Information Technology |
| ITF |
Integrated Training Facility |
| IUVS |
Imaging Ultraviolet Spectrometer |
| IV&V |
Independent Verification and Validation |
| IVHM |
Integrated Vehicle Health Management |
| IXO |
International X-ray Observatory |
| JADE |
Jovian Auroral Distributions Experiment |
| JAXA |
Japan Aerospace Exploration Agency |
| JCAA |
Joint Council on Aging Aircraft |
| JDAP |
Jupiter Data Analysis Project |
| JDEM |
Joint Dark Energy Mission |
| JEDI |
Jupiter Energetic particle Detector Instrument |
| JHU-APL |
Johns Hopkins UniversityApplied Physics Laboratory |
| JOI |
Jupiter Orbit Insertion |
| JPDO |
Joint Planning and Development Office |
| JPL |
Jet Propulsion Laboratory |
| JSC |
Johnson Space Center |
| JSC-WSTF |
Johnson Space CenterWhite Sands Test Facility |
| JWST |
James Webb Space Telescope |
| KaPR |
Ka-band Precipitation Radar |
| KI |
Keck Interferometer |
| KNMI |
Royal Netherlands Meteorological Institute |
| KSC |
Kennedy Space Center |
| KuPR |
Ku precipitation radar |
| LADEE |
Lunar Atmosphere and Dust Environment Explorer |
| LANL |
Los Alamos National Laboratory |
| LaRC |
Langley Research Center |
| LASER |
Lunar Advanced Science and Exploration Research |
| LASP |
Laboratory for Atmospheric and Space Physics (University of Colorado, Boulder) |
| LBT |
Large Binocular Telescope |
| LBTI |
Large Binocular Telescope Interferometer |
| LCC |
Launch Control Center |
| LCC |
Life-Cycle-Cost |
| LDCM |
Landsat Data Continuity Mission |
| LDEX |
Lunar Dust EXperiment |
| LEARN |
Learning Environments and Research Network |
| LEO |
Low Earth Orbit |
| LISA |
Laser Interferometer Space Antenna |
| LN2 |
Liquid Nitrogen |
| LQP |
Lunar Quest Program |
| LRD |
Launch Readiness Date |
| LRO |
Lunar Reconnaissance Orbiter |
| LRR |
Launch Readiness Review |
| LSAH |
Longitudinal Study of Astronaut Health |
| LSP |
Launch Services Program |
| LTP |
Learning Technologies Project |
| LV |
Launch Vehicle |
| LWS |
Living with a Star |
| MA |
Multiple Access |
| MAG |
Magnetometer |
| MAVEN |
Mars Atmosphere and Volatile EvolutioN |
| MCC |
Mission Control Center |
| MD |
Mission Directorate |
| MDAO |
Multidisciplinary Design Analysis and Optimization |
| MDR |
Mission Design Review |
| MEaSUREs |
Making Earth System data records for Use in Research Environments |
| MEP |
Mars Exploration Program |
| METI |
Ministry of Economy Trade and Industry (Japan) |
| MEX |
Mars Express |
| MFMTC |
National Force Measurement Technology Capability |
| MFMTC |
Measurements of Pollution in the MOPITT Troposphere |
| MI |
Minority Institutions |
| MIC |
Mission Integration Contract |
| MIDEX |
Medium-Class Explorer |
| MIs |
Minority Institutions |
| MIT |
Massachusetts Institute of Technology |
| MLP |
Mobile Launch Platform |
| MLS |
Microwave Limb Sounder |
| MMS |
Magnetospheric Multiscale |
| MO |
Missions of Opportunity |
| MO&DA |
Mission Operations and Data Analysis |
| MOE |
Mission Operations Element |
| MoO |
Mission of Opportunity |
| MPLM |
Multi-Purpose Logistics Module |
| MRO |
Mars Reconnaissance Orbiter |
| MSFC |
Marshall Space Flight Center |
| MSG |
Magnetic Spectrometer |
| MSL |
Mars Science Laboratory |
| MSR |
Mars Sample Return |
| MUREP |
Minority University Research and Education Program |
| NAC |
NASA Advisory Committee |
| NAS |
National Airspace System |
| NCAR |
National Center for Atmospheric Research |
| NCAS |
NASA Contract Assurance Services |
| NCI |
NASA Communications Improvement |
| NCSER |
National Center for Space Exploration Research |
| NEAR |
Near-Earth Asteroid Rendezvous |
| NEN |
Near Earth Network |
| NEO |
Near-Earth Object |
| NES |
NASA Explorer School |
| NESC |
NASA Engineering and Safety Center |
| NETS |
NASA Educational Technology Services |
| NextGen |
Next Generation Air Transportation System |
| NFS |
NASA FAR Supplement |
| NG |
Northrop Grumman |
| NGATS |
Next Generation Air Transportation System |
| NGIMS |
Neutral Gas and Ion Mass Spectrometer |
| NIP MCR |
Mission Confirmation Review |
| NIRCam |
New Investigator Program Near-Infrared Camera |
| NIRSpec |
Near-Infrared Spectrometer |
| NISN |
NASA Integrated Services Network |
| NIVR |
Netherlands Agency for Aerospace Programmees |
| NLS |
NASA Launch Services |
| NLT |
NASA Learning Technologies |
| NMO |
NASA Management Office |
| NMP |
New Millennium Program |
| NOAA |
National Oceanic and Atmospheric Administration |
| NOx |
Nitrogen Oxide |
| NPOESS |
National Polar |
| NPP |
NPOESS Preparatory Project |
| NPR |
NASA Procedural Requirement |
| NRA |
NASA Research Announcement |
| NRC |
National Research Council |
| NRC |
Nuclear Regulatory Commission |
| NRL |
Naval Research Laboratory |
| NRO |
National Reconnaissance Office |
| NSC |
NASA Safety Center |
| NSF |
National Science Foundation |
| NSSC |
NASA Shared Services Center |
| NSSDC |
National Space Science Data Center |
| NSTC |
National Science and Technology Council |
| NSTI-MI |
NASA Science and Technology Institute for Minority Institutions |
| NSWPC |
National Space Weather Program Council |
| NuSTAR |
Nuclear Spectroscopic Telescope Array |
| NWP |
Numerical Weather Prediction |
| OA |
Office of Audits |
| OCE |
Office of the Chief Engineer |
| OCHMO |
Office of the Chief Health and Medical Officer |
| OCIO |
Office of Chief Information Officer |
| OCO |
Orbiting Carbon Observatory |
| OGAs |
Other Government Agencies |
| OHCM |
Office of Human Capital Management |
| OI |
Office of Investigations |
| OIG |
Office of Inspector General |
| OMI |
Ozone Monitoring Instrument |
| ONERA |
Office National d' |
| ORR |
Operations Readiness Review |
| OSC |
Orbital Sciences Corporation |
| OSMA |
Office of Safety and Mission Assurance |
| OSTM |
Ocean Surface Topography Mission |
| OSTP |
Office of Science and Technology Policy |
| OSTST |
Ocean Surface Topography Science Team |
| OTE |
Optical Telescope Element |
| OVWST |
Ocean Vector Winds Science Team |
| P&F |
Particles and Fields |
| PA&E |
Program Analysis and Evaluation |
| PAR |
Performance and Accountability Report |
| PAR |
Program Acceptance Review |
| PB |
President |
| PBR |
President |
| PBS |
President |
| PCA |
Program Commitment Agreement |
| PCOS |
Physics of the Cosmos Program |
| PDR |
Preliminary Design Review |
| PDS |
Planetary Data System |
| PI |
Principal Investigator |
| PIC |
Program Integration Contract |
| PIR |
Program Implementation Review |
| PIV |
Personal Identification Verification |
| PMC |
Program Management Council |
| PMCs |
Polar Mesospheric Clouds |
| PNAR |
Preliminary Non-Advocate Review |
| PNT |
Positioning, Navigation, and Timing |
| PPS |
Precipitation Processing System |
| PR |
Precipitation Radar |
| PSBR |
Proton Spectrometer Belt Research |
| QTR |
Quarter |
| QuickSCAT |
Quick Scatterometer |
| R&A |
Research and Analysis |
| R&D |
Research and Development |
| RBSP |
Radiation Belt Storm Probes |
| REMS |
Rover Environmental Monitoring System |
| RF |
Radio Frequency |
| RFI |
Request for Information |
| RFP |
Request for Proposal |
| RI |
Research Institutions |
| RMB |
Reimbursable |
| RMP |
Risk Mitigation Phase |
| ROSES |
Research Opportunities in Space and Earth Science |
| Roskomos |
Russian Federal Space Agency |
| RPS |
Radioisotope Power System |
| RPT |
Rocket Propulsion Testing |
| RR |
Readiness Review |
| RSDO |
Rapid Spacecraft Development Office |
| RSP |
Radioisotope Power Systems |
| RW |
Reaction Wheel |
| S&MA |
Safety and Mission Assurance SA |
| SAA |
Space Act Agreement |
| SAC-D |
Satellite de Aplicaciones Cientificas |
| SALMON |
Stand Alone Missions of Opportunity |
| SAM |
Sample Analysis at Mars |
| SAP |
Core Financial System Software |
| SAR |
Synthetic Aperture Radar |
| SBIR |
Small Business Innovative Research |
| SCEM |
Scientific Context for Exploration of the Moon |
| SCFO |
Space Flight Crew Operations |
| SCP |
Space Communications Program |
| SDLC |
System Development Life Cycle |
| SDO |
Solar Dynamics Observatory |
| SE&I |
System Engineering and Integration |
| SEC |
SunEarth Connection |
| SEMAA |
Science Engineering Mathematics Aerospace Academy |
| SESFA |
Space Environments Simulation Facilities Alliance |
| SFS |
Space and Flight Support |
| SFW |
Subsonic Fixed Wing |
| SGSS |
Space Network Ground Segment Sustainment |
| SHERE |
Shear History Extensional Rheology Experiment |
| SHFH |
Space Human Factors and Habitability |
| SIM |
Space Interferometry Mission |
| SIR |
System Integration Review |
| SLI |
Student Launch Initiative |
| SMA |
Safety and Mission Assurance |
| SMAP |
Soil Moisture Active and Passive |
| SMD |
Science Mission Directorate |
| SMEX |
Small Explorer |
| SMS |
Safety and Mission Success |
| SN |
Space Network |
| SNI |
Simultaneous, non-interfering |
| SOC |
Security Operations Center |
| SOC |
Solar Orbiter Collaboration |
| SOFIA |
Stratospheric Observatory for Infrared Astronomy |
| SOMD |
Space Operations Mission Directorate |
| SORCE |
Solar Radiation and Climate Experiment |
| SPF |
Software Production Facility |
| SPOC |
Space Program Operations Contract |
| SR |
Senior Review |
| SRB |
Standing Review Board |
| SRG |
Stirling Radioisotope Generator |
| SRR |
System Requirement Review |
| SRW |
Subsonic Rotary Wing |
| SS |
Steady State |
| SSC |
Stennis Space Center |
| SSE |
Solar System Exploration |
| SSME |
Space Shuttle Main Engines |
| SSP |
Space Shuttle Program |
| SSS |
Sea Surface Salinity |
| SST |
Solid State Telescope (Thermal Emission Imaging System instrument) |
| ST |
Space Technology |
| STaR |
Shuttle Transition and Retirement |
| STATIC |
SupraThermal And Thermal Ion Composition |
| STEM |
Science, Technology, Engineering, and Mathematics |
| STEREO |
Solar Terrestrial Relations Observatory |
| STI |
Scientific and Technical Information |
| STOL |
Short take-off and landing |
| STP |
Solar Terrestrial Probes |
| STS |
Space Transportation System |
| STScI |
Space Telescope Science Institute |
| SwRI |
Southwest Research Institute |
| SXS |
Soft X-ray Spectrometer |
| T&R |
Transition and Retirement |
| T2 |
Technology transfer |
| TA |
Technical Authority |
| TBD |
To Be Determined |
| TCU |
Tribal Colleges and Universities |
| TDRS |
Tracking and Data Relay Satellite |
| TDRSS |
Tracking and Data Relay Satellite System |
| TE |
Technical Excellence |
| THEMIS |
Time History of Events and Macroscale Interactions during Substorms |
| TIMED |
Thermosphere, Ionosphere, Mesosphere, Energetics and Dynamics |
| TIMS |
Thermal Infrared Multispectral Scanner |
| TIRS |
Thermal Infrared Sensor |
| TM |
Technical Monitors |
| TMC |
Technical, Management and Cost |
| TMI |
TRMM Microwave Imager |
| TOC |
Test Operations Contract |
| TPS |
Thermal Protection System |
| TRL |
Technology Readiness Level |
| TRMM |
Tropical Rainfall Measuring Mission |
| TSDIS |
TRMM Science Data and Information System |
| TVC |
Thermal Vacuum Chambers |
| TWINS |
Two Wide |
| UAS |
Uninhabited Air Systems |
| UAV |
Unmanned Aerial Vehicle |
| UAZ |
University of Arizona |
| UCLA |
University of California at Los Angeles |
| UI |
University of Iowa |
| ULA |
United Launch Alliance |
| URC |
University Research Center |
| USA |
United Space Alliance |
| USAF |
United States Air Force |
| UTD |
University of Texas at Dallas |
| UV |
Ultraviolet |
| UVS |
UV Spectrometer |
| VAB |
Vehicle Assembly Building |
| VAO |
Virtual Astronomical Observatory |
| VCL |
Vegetation Canopy Lidar |
| WATR |
Western Aeronautical Test Range |
| WISE |
Wide-field Infrared Survey Explorer |
| WMAP |
Wilkinson Microwave Anisotropy Probe |
| WRS |
Water Recovery System |
| WSC |
White Sands Complex |
| WSTF |
White Sands Test Facility |
| XMM |
X-ray Multi-mirror Mission (Newton Observatory) |
| XRT |
X-Ray Telescope |
