EAFB		Edwards Air Force Base
EAL		External AirLock
EC		Electrostatic Charge
ECS		European Communications Satellite
EDPC		Electronic Data Processing Center
EELV		Evolved Expendable Launch Vehicle
EGNOS		European Geostationary Navigation Overlay Service
EGO		Equatorial Geophysical Observatory
EGO		Excentric Geophysical Observatory
EGP		Experimental Geodetic Payload
EGRS		Electronic and Geodesic Research Satellite
EHF		Extremely High Frequency
EIT		Extreme-ultraviolet Imaging Telescope
ELA		Ensemble de Lancement Ariane
ELDO		European Launcher Development Organisation
ELINT		ELectronic INTelligence
ELS		Earth Landing System
EMSS		Emergency Mission Support System
EMU		Extravehicular Mobility Unit
EOGO		Eccentric Orbiting Geophysical Observatory
EOL		End Of Life
EOR		Earth Orbit Rendezvous
EOR/F		Enhanced Orbiter Refrigerator/Freezer
EOS		Electro-Optical Systems
EPE		Energetic Particles Explorer
EPI		Earth Path Indicator
EPI		Electronic Position Indicator
EPS		Electrical Power System
ERB		Earth Radiation Budget
ERBE		Earth Radiation Budget Experiment
EREP		Earth Resources Experiment Package
ERISTO		European Research In Space and Terrestrial Osteoporosis
ERNE		Energetic Relativistic Nuclei and Electron experiment
ERS		Environmental Research Satellite
ERT		Earth Receive Time
ERTS		Earth Resources Technological Satellite
ESA		European Space Agency
ESDOC		European Space Data Operations Center
ESLAB		European Space LABoratory
ESMC		Eastern Space and Missile Center
ESOC		European Space Operations Center
ESP		Extra-Sensory Perception
ESRANGE		European Space RANGE
ESRIN		European Space Research INstitute
ESRO		European Space Research Organization
ESSA		Environmental Science Services Administration
ESTEC		European Space Technology and rEsearch Center
ESTRACK		European Space TRACKing
ESV		Earth Satellite Vehicle
ET		External Tank
ETR		Eastern Test Range
ETSIA		Escuela Técnica Superior de Ingenieros Aeronaúticos
EUMETSAT		EUropean METeorological SATellite
EURD		Experiment for the detection of the Ultraviolet background RaDiation
EUTELSAT		EUropean TELecommunications SATellite
EVA		Extra-Vehicular Activity
EWS		Early Warning System
EXOSAT		European X-ray Observatory SATellite