Acronyms / Glossary  
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Acronym Full Name
ACE Advanced Composition Explorer
ACP Aviation Capacity program
ACRIM Active Cavity Radiometer Irradiance Monitor
AEPA Atmospheric Effects of Aviation program
AGATE Advanced General Aviation Transport Experiments
ALT-Laser Laser Altimeter
AST Advanced Subsonic Technology
ASTP Advanced Space Technology program
Astrobiology The study of the living universe. Provides a foundation for a multidisciplinary study of the origin and distribution of life in the universe, including the role of physical forces, planetary atmospheres, and ecosystem interaction in the evolution with living systems.
Astro materials The natural, nonbiological materials that constitute the solid bodies of the solar system other than Earth, including planets, satellites, asteroids, comets, and dust. These materials may be studied in situ in their place of origin, collected by missions for return to Earth, or brought to Earth by natural phenomena (meteorites, cosmic dust).
Aviation Capacity Program
Technology development program designed to increase air traffic throughput (the number of planes that can safely take off, fly, or land in a given air space)
AvSP
Aviation Safety program
AXAF Advanced X-ray Astrophysics Facility, now named Chandra X-ray Observatory
Base R&T Basic long-range research and technology development
CGRO Compton Gamma Ray Observatory
DoD Department of Defense
DOE Department of Energy
DS
Deep Space
EELV Evolved Expendable Launch Vehicle
El Niño A climate disturbance occurring every 2 to 5 years in the Pacific Ocean. A region of warm water forms in the western Pacific and moves toward South America, altering weather and rainfall patterns, wind directions, and even the jet stream. El Niño events contribute to floods and droughts in the Americas, Africa, and Australia.
EOCAP Earth Observation Commercialization Applications program
EOS Earth Observing System
EOSDIS EOS Data and Information System
EPA
Environmental Protection Agency
ERAST Environmental Research Aircraft Sensor Technology
FAA Federal Aviation Administration
FIRST Far-Infrared Space Telescope
Future-X A continuing series of demonstrators containing technologies that are more advanced or alternative to the technologies in X-33 and X-34
GAP General Aviation Propulsion program
GLAST Gamma-ray Large Area Space Telescope
Global change The full range of natural and human-induced changes in Earth's environment, including alterations in climate, land productivity, oceans or other water resources, atmospheric chemistry, and ecological systems, that may alter the capacity of Earth to sustain life.
GOES Geostationary Operational Environmental Satellite
GPRA Government Performance and Results Act of 1993
GPS Global Positioning System
GRACE Gravity Recovery and Climate Experiment
HEDS Human Exploration and Development of Space (Enterprise)
HPCC High Performance Computing and Communications
HST Hubble Space Telescope
Human-rated General term that can best be described as designing piloted vehicle systems in such a manner as to safely accommodate humans and to make use of human-inherent capabilities to ensure the greatest possible probability of a successful mission.
Hyper-X Hypersonic Test Vehicle
IMAGE Imager for Magnetopause-to-Aurora Global Exploration
IPCC International Panel on Climate Change
ISE Intelligent Synthesis Environment
ISS International Space Station
LEO Low-Earth orbit
Lidar
Light detecting and ranging instrument (as opposed to radar, which uses radio waves)
Lunar Prospector A small Discovery program mission that orbited the Moon
Mars Pathfinder
The Discovery program mission that landed the Sojourner rover on Mars
Microgravity research Area of scientific application and commercial research concerned with the identification and description of the effects of reduced gravitational forces on physical and chemical phenomena. Microgravity research probes a new parameter in space where gravitional acceleration no longer is equal to 1 g and, instead, can approach values that are orders of magnitude lower.
Mir Russian space station
NEAR Near Earth Asteroid Rendezvous
New Millennium program A space flight program to demonstrate new technologies for use in a subsequent flight validation program
NGST Next Generation Space Telescope
NIH National Institutes of Health
NMP New Millennium program
NOAA National Oceanic and Atmospheric Administration
NOx
Nitrogen oxide
NSF
National Science Foundation
OMB Office of Management and Budget
R&D Research and development
R&T Research and technology
SAGE Stratospheric Aerosol and Gas Experiment
SAMPEX Solar, Anomalous, and Magnetospheric Particle Explorer
SeaWiFS Sea-viewing Wide Field-of-view Sensor
SIM Space Interferometry Mission
SIRTF Space Infrared Telescope Facility
SOFIA Stratospheric Observatory for Infrared Astronomy
SOHO Solar and Heliospheric Observatory
Space Act National Aeronautics and Space Act of 1958
SRTM Shuttle Radar Topography Mission
STEREO
Solar Terrestrial Relations Observatory
TDRSS
Tracking and Data Relay Satellite System
TIMED Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics
TOMS Total Ozone Mapping Spectrometer
TRACE Transition Region and Coronal Explorer
TRMM Tropical Rainfall Measuring Mission
UEET Ultra-Efficient Engine Technology (Aeronautics)
USDA U.S. Department of Agriculture
USGS U.S. Geological Survey
VCL Vegetation Canopy Lidar Mission
WMO World Meteorological Organization