NASA Thesaurus - Astronomy Vocabulary

8/14/2019 NASA Thesaurus - Astronomy Vocabulary

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NASA SP17069

NASA ThesaurusAstronomyVocabulary

Scientific and Technical Information Division 1988National Aeronautics and Space AdministrationWashington, M=


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NASA SP-7069

NASA ThesaurusAstronomyVocabulary

A subset of the NASA Thesaurusprepared for the international Astronomical Union ConferenceJuly 27-31, 988


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This publication was prepared by the NASA Scientific and Technical Information Facility opera tedfor the National Aeronautics and Space Administration by RMS Associates.


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INTRODUCTIONThe NASA Thesaurus Astronomy Vocabularyconsists of terms used by NASA indexers as descriptorsfor astronomy-related documents. The terms are presented in a hierarchical format derived from the1988 edition of the NASA Thesaurus Volume 1 -Hierarchical Listing. Main (postable) terms and non-postable cross references are listed in alphabetical order.READING THE H IERARCHYEach main term is followed by a display of its context within a hierarchy. USE references, UF (usedfor) references, and SN (scope notes) appear immediately below the main term, followed by GS(generic structure), the hierarchical display of term relationships. The hierarchy is headed by thebroadest term within that hierarchy. Terms that are broader in meaning than the main term are listed .above the main term; terms narrower in meaning are listed below the main term. The term itself is inboldface for easy identification. Finally, a list of related terms (RT) from other hierarchies is provided.Within a hierarchy, the number of dots to the left of a term indicates its hierarchical level - he moredots, the lower the level (i.e., the narrower the meaning of the term). For example, the term "ELLIPTICALGALAXIES" which is preceded by two dots is narrower in meaning than "GALAXIES"; this in turn isnarrower than "CELESTIAL BODIES". This relationship can be seen in the hierarchy of any of these

' three terms.While allproader, narrower, and related terms in a hierarchy are main (postable) terms from the NASAThesaurus, some hierarchy terms do not appear as main terms in the NASA Thesaurus AstronomyVocabulary The reason is that a term may be part of a hierarchical relationship, but is not itself a validmain entry in an astronomy vocabulary. For example, the displays of "IMPACT DAMAGEw and"METEORITIC DAMAGE" show "DAMAGE" as the broadest term, but there is not a main entry for"DAMAGE", which is too general a term for an astronomy vocabulary.Other features include array terms identified by an infinity symbol which organize related conceptsunder very general headings; scope notes (SN), which restrict the use of a term to a certain context;and "used for" (UF) terms, which are nonpostable variations of the terms that have been cross refer-enced to the postable main term.


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TYPICAL HIERARCHICAL LISTING ENTRY

POSTABLE TERM -FAR ULTRAVIOLET RADIATION(200TO 2000 ANGSTROMS)SCOPE NOTE VACUUM ULTRAVIOLET RADIATION/ S ELECTROMAGNETIC RADIATIONUSED FOR TERM ULTRAVIOLET RADIATIONGENERlC STRUCTURE/ FAR ULTRAVlOLET RADLATlON- - .LYMAN ALPHA RADIATION- - LYMAN BETA RADIATIONIONIZING RADIATIONULTRAVIOLET RADIATION- FAR ULTRAVIOLET RADIATION. LYMAN ALPHA RADIATION- LYMAN BETA RADlATlONRELATED TERMS- T BREMSSTRAHLUNGMEGELLAN ULTRAVIOLET ASTRONOMYSATELLITENEAR ULTRAVIOLET RADIATION

x RADIATIONULTRAVIOLETTELESCOPESX RAYS

TYPICAL USE CROSS REFERENCE ENTRY

NONPQSTABLETERM bVACUUM ULTRAVIOLET RADIATION, y _ - - ~ cSE FAR ULTRAVIOLET RADIATIONPOSTABLEfERM

TYPICAL ARRAY TERM ENTRY

ARRAY TERM----c r CLUSTERSSCOPE SN (USE OF A MORE SPECIFIC TERM ISRECOMMENDED-CONSULT THE TERMS

LISTED BELOW)RELATED TERM- T CLUMPSGALACTIC CLUSTERSGLOBULAR CLUSTERSPLEIADES CLUSTERPRAESEPESTARCLUSTERSSTAR CLUSTERSVIRGO GALACTIC CLUSTER


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NASA THESAURUSASTRONOMY VOCABULARY

A STARSGS CELESTIAL BODIES. STARS. . EARLY STARS. . . HOT STARS. . . . A STARSRT BLUE STARSPECULIAR STAR SWOLF-RAYET STARSABIOQENESISGS WOLUTION (MVELOPMENT). BIOLOGICAL EVOLUTION

. . ABlOaENESUJRT AUTOCATALYSISCHEMICAL EVOLUTIONLIFE SCIENCESPANSPERMIASPERMATOGENESISABSORPTION BAN DSUSE ABSORPTION SPECTRAABSORPTION SPECTRAUF ABSORPTION BANDSSPECTRAL ABSORPTIONGS SPECTRA. RADIATION SPECTRA. . ABSORPTION SPECTRA. . . FRAUNHOFER LINES. . . HERZBERG BANDS. . . TELLURIC LINES. SPECTRAL BANDS. . ABSORPTION SPECTRA. . . FRAUNHOFER UNES. . . HERZBERG BANDS. . . TELLURIC LINESRT mABSORPTlONBALMER SERIES

m BANDSCONTINUOUS RADIATIOND UNESELECTROMAGNETIC ABSORPTIONELECTROMAGNETIC SPECTRAELECTRON SPECTROSCOPYELECTRONIC SPECTRAEMISSION SPECTRAENERGY SPECTRAFRAUNHOFER LlNE DISCRIMINATORSGALACTIC NUCLEIGAMMA RAY ABSORPTIOMETRYH ALPHA LlNEH BETA LlNEH GAMMA LlNEH LINESIONIZING RADIATIONK UNESLASER SPECTROMETERSLlNE SPECTRAMICROWAVE SPECTRAMOLECULAR SPECTRAMOLECULAR SPECTROSCOPYOSCILLATOR STRENGTHSPARAMAGNETIC RESONANCEPASCHEN SERIESPHOTOACOUSTIC SPECTROSCOPYPHOTOLUMINESCENT BANDSPHOTON ABSORPTIOMETRYRAMAN SPECTRARYDBERG SERIESSCHUMANN-RUNGE BANDSSELF ABSORPTIONSOLAR SPECTRASOLAR SPECTROMETERSSPECTRUM ANALYSISSPIN TEMPERATURESTELLAR SPECTRA

resoitmow SPE~-(CONX)SYMBIOTIC STARSULTRAVIOLET SPECTRAVISIBLE SPECTRUMACCRETION DISKSRT ASTROPHYSICSBINARY STARSBLACK HOLES (ASTRONOMY)COOLING FLOW S (ASTROPHYSICS)DISKS (SHAPES)ECLIPSING BINARY STARSGALACTIC N UCLEIROTATING DISKSSTEUAR MASS ACCRETIONX RAY BINARIESACCUMUUTOASUF COUECTORSGS ACCUMULATORS. ACCUMULATORS (COMPUTERS). W S T COLLECTORS. SOLAR COLLECTORSRT ANODESCONCENTRATORSENTRAPMENTFUEL SYSTEMSPRESSURE VESSELSPRESSURIZINGACHONDRITESGS CELESTIAL BODIES. METEORITES. . STONY METEORITES

. . . A CHONW Im S. . . . BONWC METEORITE. . . . KAPOETA ACHONDRITE. . . . NORTON COUNTY ACHONDRITERT CHONDRITESIRON METEORITESACTINOGRAPHSUSE ACTlNOMETERSACTINOMETERSUF ACTINOGRAPHSEMISSOGRAPHSGS MEASURING INSTRUMENTS

, RADIATION MEASURING INSTRUMENTS. . ACTINOMETERS. . . INFRARED SPECTROMETERS. . . PYRANOMETERS. . . RADIOMETERS. . . . DlCKE RADIOMETERS. . . . INFRARED DETECTORS. . . . INFRARED SCANNERS. . . . MICROWAVE RADIOMETERS. . . . PASSIVE L-BAND RADIOMETERS. . . . PRESSURE MODULATOR

RADIOMETERS. . . . SPECTRORADIOMETERS. . . SOLAR SPECTROMETERS. . . SPECTROHELIOGRAPHS. . . SPECTROPHOTOMETERS. . . . INFRAREDSPECTROPHOTOMETERS. . . . ULTRAVIOLETSPECTROPHOTOMETERS. . . ULTRAVIOLET DETECTORS. . . . ULTRAVIOLET SPECTROMETERS. . . . ULTRAVIOLETSPECTROPHOTOMETERSRT DOSIMETERSFABRY-PEROT SPECTROMETERSFIELD INTENSITY METERSSPECTROMETERS

ACTIVE GALACTIC NUCLEIGS GALACTIC NUCLEI

ACTIVE GALACTIC NUCLEI-(CONX). ACllVE GALACTIC NUCLEIRT ACTlVE GALAXIESGALACTIC RADIATIONeoNUCLEIQUASARSRADIO GALAXIESSEYFERT GALAXIES

ACTIVE QAUXIESGS CELESTIAL BODIES. GALAXIES. ACTIVE GALAXIES. . . MARKARIAN GALAXIES. . . RADIO GALAXIES. . . SEYFERT GALAXIESRT ACTIVE GALACTIC NUCLEIGALACTIC NUCLEIGALACTIC RADlATlONQUASARS

ACTIVE MAGNETO PARTICLE TRACEREXPLORERSUSE AMPTE (SATELLITES)ACTlVE VOLCANOESUSE VOLCANOESADVANCED ORBITING SOLAR OBSERVATORYUSE AOSOADVANCED RECONN ELECTRIC SPACECRAFTUF ARES (SPACEC RAmGS INTERPLANETARY SPACECRAFT. MARS PROBES. . ADVANCED RECONN ELECTRICSPACECRAFTUNMANNED SPACECRAFT

. SPACE PROBES

. . MARS PROBES

. . . ADVANCED RECONN ELECTRICSPACECRAFTRT mSPACECRAFTADVANCED X RAY ASTROPHYSICS FACILITYUSE X RAY ASTROPHYSICS FACILITYADVECTIONRT ATMOSPHERIC CIRCULATIONCONVECTIONHEAT TRANSFERPECLET NUMBERAERONOMYRT AIRGLOWALPINE METEOROLOGYATMOSPHERIC COMPOSITIONATMOSPHERIC PHYSICSAURORAS

DIAL SATELLITEGEOPHYSICSMAGNETOSPHERE-IONOSPHERECOUPLINGMESOMETEOROLOGYMETEOROLOGYPOLAR CUSPSUPPER ATMOSPHEREAEROPHYSICSUSE ATMOSPHERIC PHYSICSAEROSPACE ENVIRONMENTSSN (EXCLUDES SPACECRAFTINTERVEHICULAR ENVIRONMENTS)UF SPACE ENVISONMENTGS ENVIRONMENTS. AEROSPACE ENVIRONMENTS. . CISLUNAR SPACE. DEEP SPACE


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AFTERGLOWSAEROSPACE E N V I R O N M ~ ( W N ~ ). . . NTERPLANETARY SPACE. . . NTERSTELLAR SPACE. . EARTH ORBITAL ENVIRONMENTSRT mAEROSPACE SCIENCESARGONQXYGEN ATMOSPHERESmASTRONAUTICSBlOASFRONAUTlCSBlOmOCESSlNGBIOSATELUTESCOSMIC RAYSrn TMOSPHEREE~OMAGNl lC RADIATIONEXOBIOLOGYEXTRATERRESTRIAL ENVIRONMENTSXrRATERRESTRIAL UFE~XTRATERRESTRIAL RADIATIONEXTRAVEHICULAR ACTIVITYGEOPHYSICAL FLUID FLOW CELLSHAZARDOUS MATERIAL DISPOSAL (INSPACE)HELIUM-OXYGEN ATMOSPHERESJUPITER ATMOSPHERELIFE SUPPORT SYSTEMSLUNAR ENVIRONMENTMANNED SPACE FLIGHTMARS-ATM~SPHERENEPTUNE ATMOSPHEREPANSPERMIAPLANETARY ENVIRONMENTSRADIATION BELTSSOLAR RADIATIONSPACE EXPLORATIONSPACE FLIGHTSPACE HABITATSSPACE MANUFACTURINGSPACEBORNE EXPERIMENTSSPACECRAFT CABIN SIMULATORSTHERMAL ENVIRONMENTSURANUS ATMOSPHERE .VACUUMVENUS ATMOSPHERE

A F E R G L O WGS AFTERGLOWS. HELIUM AFTERGLOW. OXYGEN AFTERGLOWRT ATMOSPHERIC IONIZATIO NGAS DISCHARGESGAS IONIZATIONUGH1 SCAlTERlNGLUMINESCENCEPHOSPHORESCENCEPLASMA DECAY

AGB STARSUSE ASYMPTOTIC GIANT BRANCH STARSAIRGLOWUF ATMOSPHERIC EMISSIONGS ATMOSPHERIC RADIATION. SKY RADIATION. . - ~ l R c K o w. . . GEOCORONAL EMISSIONS. . . NIGHTGLOW. . . TWILIGHT GLOWELECTROMAGNETIC RADIATION. LIGHT NlSlBL E RADIATION). . SKY RADIATION. . . AIRGLOW. . . . GEOCORONAL EMISSIONS. . . . NIGHTGLOW. . . . TWILIGHT GLOWRT AERONOMY

ATMOSPHERIC IONIZATIONAURORASCHEMILUMINESCENCEEARTH ATMOSPHEREEMISSIONFABRY-PEROT SPECTROMETERSLIGHT EMISSIONNIGHT SKYOXYGEN SPECTRARADIATIVE RECOMBINATIONRAYLEIGH SCAlTERlNGSKY BRIGHTNESSALAIS METEORlTEGS CELESTIAL BODIES. METEORITES. . STONY METEORITES. . . CHONDRITES. . . . CARBONACEOUS METEORITES. . . . . ALAIS METEORITE

A m0s ALBEDO. COSMIC RAY ALBEDO. EARTH ALBEDO. LUNAR ALBEDORT ABSORPTANCECOSMIC RAYSEARTH RADIATION BUDGETEXPERIMENTOPTICAL PROPERTIESPlANETAR Y RADIATIONR-ANCESOLAR RADIATIONSURFACE PROPERTIESALLENM mournGS CELESTIAL BODIES. METEORITES. . STONY METEORITES. . . CHONDRITES. . . . CARBONACEOUS CHONDRITES. . . . . ALLENDE METEORITEALMUCANTARUSE ELEVATION ANGLEALSEPUSE APOLLO LUNAR SURFACE EXPERIMENTSPACKAGEALTIMETERSGS MEASURING INSTRUMENTS. DISTANCE MEASURING EQUIPMENT. . ALTIMETERS. . . LASER ALTIMETERS. . . RADIO ALTIMETERSRT AIRCRAFT INSTRUMENTSALTlMETRYALTITUDEAPPROACH INDICATORSASTROLABESBAROMETERSFLIGHT INSTRUMENTSHYPSOMETERSLANDING INSTRUMENTSNAVIGATION AIDSNAVIGATION INSTRUMENTSPOSITION INDICATORSRANGE FINDERSRATE OF CUM0 INDICATORSSATELLITE ALTIMETRYA L T I M YGS ALllMEVRY. SATELLITE ALTIMETRYRT ALTIMETERSALTITUDEELEVATIONGEODESYGEOIDSRADAR MEASUREMENTTOPOGRAPHYALTITUDEGS ALmUOE. FLIGHT ALTITUDE. HIGH ALTITUDE. LOW ALTITUDE. MIDALTITUDE. SEA LEVELRT ALTIMETERSALTIMETRYAPEXESAZIMUTH

DISTANCEELEVATIONELEVATION ANGLEHEIGHTPOSITION (LOCATION)AMALTHEAGS CELESTIAL BODIES. NATURAL SATELLITES. . JUPITER SATELLITES. . . AMALTHEART JUPITER (PLANET)SOLAR SYSTEMAMBITUSE FIELD THEORY (PHYSICS)AMOR ASTEROIDUF MINOR PLANET 1221GS CELESTIAL BODIES

AMOR ASTEROID-(CONT.). ASTEROID BELTS. . ASTEROIDS. . . AMOR ASTEROIDRT ASTRONOMYJUPITER (PLANET)MARS (PLANET)PLANETARY ORBITSSOLAR SYSTEMAnuwmrn ASTEROIDGS CELESTIAL BODIES. ASTEROID BELTS. . ASTEROIDS. . AMPHITRITE ASTEROIDRT GA LIE O PROJECTAMPLITUDESGS AMPLITUDES. PULSE AMPLITUDE. SCAlTERING AMPLITUDERT AMPLIFICATIONCYCLESDIMENSIONSDISPLACEMENTFREQUENCIES

m INTENSITYLEVEL (QUANTITY)MAGNITUDEOSCILLATIONSPHASE DEVIATIONPICOSECOND PU LSESPULSESSTANDING WAVE RATIOSVIBRATIONA M r n ( SA TE LL nE S)SN (ACTIVE MAGNETOSPHERIC PARTICLETRACER EXPLORERS)UF ACTIVE MAGNETO PARTICLE TRACEREXPLORERSGS ARTIFICIAL SATELLITES. SCIENTIFIC SATELLITES. . A M PE (SATELLITES)RT EARTH MAGNETOSPHEREEUROPEAN SPACE PROGRAMSSATELLITE-BORNE INSTRUMENTSSOLAR WINDSPACE PLASMASSPACEBORNE EXPERIMENTS

m ANDROMEDASN (USE OF A MORE SPECIFIC TERM ISRECOMMENDED-CONSUL T THE TERMSLISTED BELOWRT ANDROMEDA CONSTELLATIONANDROMEDA GALAXY

ANDROMEDA CONSTEUATlONGS CONSTELLATIONS. ANDROMEDA CONSTEUATIONRT mANDROMEDAANDROMEDA GALAXYANDROMEDA GALAXY 'GS CELESTIAL BODIES--GALAXIES. GALACTIC CLUSTERS. . LOCAL GROUP (ASTRONOMY). . . . ANDROMEDA GALA XYRT *ANDROMEDAANDROMEDA CONSTELLATIONDISK GALAXIESSPIRAL GALAXIESANGULAR ACCELERATIONGS RATE S (PER TIME). ACCELERATION (PHYSICS). ANGULAR ACCELERATIONRT aACCELERATlONCENTRIFUGAL FORCECENTRIPETAL FORCEDECELERATIONROTATIONSPIN REDUCTIONTRANSVERSE ACCELERATIONYO-YO DEVICESANGULAR CORRELATIONGS CORRELATIONANGULAR CORRELATIONRT DATA CORRELATIONMATTS (SYSTEMS)VIEW EFFECTS


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ANGULAR MOMENTUMGS MOMENTUM. ANGULAR Mo MEN tuMRT CIASSICAL MECHANICSCLEBSCH-GORDAN COEFFICIENTSELECTRON SPlNKINETICSMOMENTS OF INERTIAPARTICLE SPlNQUANTUM NUMBERS

QUAMUM THEORYQUENCHING (ATOMIC PHYSICS)RACAH COEFFICIENTREGGE POLESSPlNSPIN TESTSSTEUAR ROTATIONWIGNER COEFFICIENTANGULAR MOTIONUSE ANGULAR VELOCITYANGULAR VELO CINUF ANGULAR MOTIONGS RATES (PER T IM 9. ANGULAR VELOCITYVELOCITY. ANGULAR VELOCITYRT GYRATIONORBITAL VELOCITYREVOLVINGROTATIONROTOR SPEEDSAGNAC EFFECTTACHOMETERSTIP SPEEDANNUAL VARIATIONSUF SEASONAL VARIATIONSGS VARIATIONS. PERIODIC VARIATIONS. . ANNUAL VARIATIONSRT ATMOSPHERIC CIRCULA TIONBROWN WAVE EFFECT- --CYCLESGREEN WAVE EFFECTMAG Nm C VARIATIONSMETEOROLOGICAL PARAMETERSMETEOROLOGYMONSOONSSEASONSTEMPORAL MSTR IBUTIONWEATHERWIND VARIATIONSZONAL FLOW (METEOROLOGY)ANSUSE ASTRONOMICAL NEIWERLA NDSSATELLITEANTIMATTERGS ANTIMATTER. ANTIPARTICLES. . ANTINEUTRINOS. . ANTINUCLEONS. . ANTIPROTONS. . POSITRONSRT DEGENERATE MATTERMATTER (PHYSICS)ANTINODESRT NODES (STANDING WAVES)- ,RAREFACTIONRESONANT FREQUENCIESSTANDING WAVESVIBRATIONWAVELENGTHSAOSOUF ADVANCE0 ORBITING SOLAROBSERVATORYGS OBSERVATORIES. ASTRONOMICAL OBSERVATORIES. . ASTRONOMICAL SATELLITES. . . OSO. . . . AOSO. SOLAR OBSERVATORIES. . OSO. . . AOSORT SUNAPATITESUSE MINERALS

APEXESUF VERTICESRT ALTITUDEAPHEUONSAPOGEESMAXIMAORBITS-PEAKSPLATEAUSTRAJECTORIESZENITH

APMUOISBGS APSIDES. II\PHEUOI#)ORBrrS. ELLIPTICAL O RBITS. . A W E UO NS. SOLAR ORBITS. . APHUK)NSRT APEXESPERIHELIONSAPOGEESGS APSIDES. APOGEESORBITS. EARTH ORBITS. . APOGEES. ELLIPTICAL ORBITS. .-A#KIEESRT APEXES

PERIGEES

. NASA PROGRAMS. . NASA SPACE PROGRAMS. . . APOU O APPUCATKINS PROGRAM. SPACE PROGRAMS. . NASA SPACE PROGRAMS. . . APOUO APPLICATIONS PROGRAMRT AAP 1 MISSIONAAP 2 MISSIONAAP 3 MISSIONAAP 4 MISSIONEARTH RESOURCES PROGRAMEARTH RESOURCES SURVEY PROGRAMSATURN PROJECTSATURN WORKSHOPSSATURN 1 WORKSHOP

APOLLO ASTEROIDSGS CELESTIAL BODIES. ASTEROID BELTS. . ASTEROIDS. . . APO UO ASTEROIDSRT ASTRONOMYCHIRONEARTH ORBITSJUPITER (PLANET)MARS (PLANET)PLANETARY ORBITSSOLAR SYSTEMA W U O F U G m SGS SPACE FLIGHT. MANNED SPACE FLIGHT. . APOLLO FLIGHTS. . . APOLLO 5 FLIGHT. . . APOLLO 6 FLIGHT. . . APOLLO 7 FLIGHT

. . . APOLLO 8 FLIGHT. . APOUO 9 FLIGHT. . . APOLLO 10 FLIGHT. . . APOLLO 11 FLIGHT. . . APOLLO 12 FLIGHT. . . APOLLO 13 FLIGHT. . . APOLLO 14 FLIGHT. . . APOLLO 15 FLIGHT. . . APOLLO 16 FLIGHT. . . APOLLO 17 FLIGHTRT SKYLAB PROGRAMAWLLO LUNAR EXPERIMENT MODULEGS LUNAR SPACECRAFT. APOLLO SPACECRAFT. . AW LL O LUNAR EXPERIMENTMODULELUNAR LANDING MODULES. LUNAR MODULE

APOLLO SOYUZ TEST PROJECTAPOUO LUNAR EXPERIMENT MODULE-(CONX). . . APOUO LUNAR EXPERIMENT

MODULEMANEUVERABLE SPACECRAFT. APOLLO SPACECRAFT. . A W U O LUNAR EXPERIMENTMODULEMANNED SPACECRAFT. APOLLO SPACECRAFT. .AWLLO LUNAR EXPERIMENTlllOMNE. LUNAR MODULE. . A W U O LUNAR E XP ERIM ENTMODULEREENTRY VEHICLES. RECOVERABLE SPACECRAFT. . APOLLO SPACECRAFT. . . APOUO LUNAR EXPERIMENTMODULESOFT LANDING SPACECRAFT. APOLLO SPACECRAFT. . APOLLO LUNAR EXPERIMENTMODULE. LANDING MODULESLUNAR LANDING MODULES. . . LUNAR MODULE. . . . APOUO LUNAR EXPERIMENTMODULERT LUNAR EXPLORA TIONLUNAR LANDING

APOLLO LUNAR SURFACE EXPERIMENTSPACKAGEUF ALSEPPACKAGES. INSTRUMENT PACKAGES. . A W U O LUNAR S URF ACEEXPERIMENTS PACKAGE

s NSTRUMENTSLUNAR EXPLORATIONLUNAR RETROREFLECTORSPAYLOADSr SURFACES

APOLLO PROJECTGS PROGRAMS. LUNAR PROGRAMS. . AWLLO PROJECT. NASA PROGRAMS. . NASA SPACE PROGRAMS. . . APOLLO PROJECT. PROJECTS. . APOLLO PROJECT. SPACE PROGRAMS. . NASA SPACE PROGRAMS. . . APOUO PROJECTRT AAP 1 MISSIONAAP 2 MISSIONAAP 3 MISSIONAAP 4 MISSIONADVANCED RANGE INSTRUMENTATIONAIRCRAFTCOMMAND SERVICE MODULESLSSMLUNAR EXPLORATIONLUNAR EXPLORATION SYSTEM FORAPOLLOLUNAR MOBILE LABORATORIESLUNAR PROBESMANNED SPACECRAFTMARQUARDT R4D ENGINEMERCURY PROJECTSATURN LAUNCH VEHICLESSATURN WORKSHOPSSATURN 1 WORKSHOPSATURN 5 WORKSHOPSIMSITE DATA PROCESSORSSKYLAB PROGRAMSOFT LANDING SPACECRAFT

A P O UO SHORT STACKRT SPACECRAFT CONFIGUR ATIONS&POLLO SOYUZ TEST PROJECTUF ASTPGS PROGRAMSPROJECTSAPOLLO SOYUZ TEST PROJECTRT INTERNATIONA L COOPER ATIONINTERNATIONAL RELATIONSMANNED SPACECRAFTRENDEZVOUSSOYUZ SPACECRAFTSPACE FLIGHT


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APOLLO SPACECRAFTAPOLLO SOYUZw P~JEcT- (WNX)SPACE MISSIONSSPACE PROGRAMSSPACE RENDEZVOUSSPACECREW TRANSFERU.S.S.R. SPACE PROGRAMAmLLo SPACECRAFrGS LUNAR SPACECRAFT. A#KLO SPACECRMT. APOLLO LUNAR EXPERIMENTM O W L EMANEUVERABLE SPACECRAFT.APouo S P A C E C R m. .AWUO LUNAR EXPERIMENTMODULEMANNED SPACECRAFT. APOUO SPACECRAFT. . A W U O LUNAR EXPERIMENTMODULEREENTRY VEHICLES

, RECOVERABLE SPACECRAFT. . APOUO SPACECRAFT. . . APOLLO LUNAR EXPERIMENTMODULESOFT LANDING SPACECRAFT. APOLLO SPACECRAFT. . A W U O LUNAR EXPERIMENTMODULERT COMMAND MODULESLANDING MODULESLUNAR MODULELUNAR WDULE 5LUNAR MODULE 7MANNED ORBITAL LABORATORIESSAPURN PROJECTSERVICE MODULESSKYLAB PROGRAMUNIFIED S BAND

APOUO TELESCOPE MOUNTGS SPACECRAFT CONFIGURATIONS. APOUO TELESCOPE MOUNTTELESCOPES. MANNED ORBITAL TELESCOPES. . A P O W TELESCOPE MOUNTRT SKYLAB PROGRAMAPOUO 5 FUQKTGS SPACE FLIGHT. MANNED SPACE FUGHT. . AWLLO FLIGHTS. . .mu0 5 FLIGHTRT EARTH-MOON TRAJECTORIESLUNAR EXPLORATIONLUNAR EXPLORATION SYSTEM FORA W U OLUNAR FLIGHTLUNAR LANDINGLUNAR LAUNCHLUNAR MODULELUNAR SPACECRAFTMOON-EARTH TRAJECTORIES

APOLLO 6 FUGHTGS SPACE FUGHT. MANNED SPACE FUGHT. .APOLLO FUGHTS. . . A P O UO 8 FUQHTRT EARTH-MOON TRAJECTORIESLUNAR EXPLORATIONLUNAR EXPLORATION SYSTEM FORAPOUOLUNAR FLIGHTLUNAR LANDINGLUNAR LAUNCHLUNAR MOWLEMANNED SPACECRAFTMOON-EARTHTRAJECTORIES

mu0 9 FLIGHTGS SPACE FUG HT. :dANNED SPACE FUGHT. . APOLLO FLIGHTS. . . A P O UO 9 FLIGHTRT EARTH-MOON TRAJECTORIESLUNAR EXPLORATIONLUNAR EXPLORATION SYSTEM FORAWLLOLUNAR FUGHTLUNAR LANDINGLUNAR LAUNCHLUNAR MODULEAPoLLo 10 FLIGHTGS SPACE FUG HT. MANNED SPACE FLIGHT. . APOLLO FLIGHTS. . . A P O U O l O F L I G mRT EARTH-MOON TRAJECTORIESLUNAR EXPLORATIONLUNAR EXPLORATION SYSTEM FORAPOLLOLUNAR FUGHTLUNAR LANDINGLUNAR LAUNCHLUNAR MODULEMANNED SPACECRAFTMOON-EARTH TRAJECTORIESA m L L O 11 FLIGHTGS SPACE FUGH T. MANNED SPACE FLIGHT. . APOLLO FLIGHTS. . . A#KU411FLIGHT

RT EARTH-MOON TRAJECTORIESLUNAR EXPLORATIONLUNAR EXPLORATION SYSTEMAWLLOLUNAR FLIGHTLUNAR LANDINGLUNAR LAUNCHLUNAR MOWLEMANNED SPACECRAFTMOON-EARTH TRAJECTORIES

FOR

APOUO 6 FUGHT APOLLO 12 FLIGHTGS SPACE FLIGHT GS SPACE FLIGHT. MANNED SPACE FLIGHT . MANNED SPACE FLIGHT. . APOLLO FUGHTS . . APOLLO FLIGHTS. . . APOUO 6 FLIGHT . . . AWLLO 12 FLIGHTRT EARTH-MOON TRAJECTORIES RT EARTH-MOON TRAJECTORIESLUNAR EXPLORATION LUNAR EXPLORATIONLUNAR EXPLORATION SYSTEM FOR LUNAR EXPLORATION SYSTEM FORA D ~ I n APOLLO..---.,LUNAR FLIGHT

LUNAR LANDINGLUNAR LAUNCHLUNAR MODULELUNAR SPACECRAFTMOON-EARTH TRAJECTORIESAPOUO 7 FLIGHTGS SPACE FLIGHT. MANNED SPACE FLIGHT. . APOLLO FLIGHTS. . . APOLLO 7 FUGHTAT EARTH-MOON TRAJECTORIESLUNAR EXPLORATIONLUNAR EXPLORATION SYSTEM FORAPOLLOLUNAR FLIGHTLUNAR LANDINGLUNAR LAUNCHLUNAR MODULEMANNED SPACECRAFTMOON-EARTH TRAJECTORIES

LUNAR FLIGHTLUNAR LANDINGLUNAR LAUNCHLUNAR MODULEMANNED SPACECRAFTMOON-EARTH TRAJECTORIES

A P O UO 13 FUGHTGS SPACE FLIGHT. MANNED SPACE FLIGHT. . APOLLO FLIGHTS. . . A P O UO 13 FLIGHTRT EARTH-MOON TRAJECTORIESLUNAR EXPLORATIONLUNAR EXPLORATION SYSTEM FORAPOLLOLUNAR FLIGHTLUNAR LANDINGLUNAR LAUNCHLUNAR MODULEMANNED SPACECRAFTMOON-EARTH TRAJECTORIES

APOUOS SPACE4 FLIGHTLIGHT. MANNED SPACE FLIGHT. . APOLLO FLIGHTS. . . APOLLO 14 FUGHTRT EARTH-MOON TRAJECTORIESLUNAR EXPLORATIONLUNAR EXPLORATION SYSTEM FORAPOUOLUNAR FUGHTLUNAR LANDINGLUNAR LAUNCHLUNAR MODULEMANNED SPACECRAFTMOON-EARTH TRAJECTORIES

A PQ UO 15 FUGHTGS SPACE FLIGHT. MANNED SPACE FLIGHT. . APOLLO FLIGHTS. . . APOUO 15 FUGHTRT EARTH-MOON TRAJECTORIESLUNAR EXPLORATIONLUNAR EXPLORATION SYSTEM FORAPOLLOLUNAR FLIGHTLUNAR LANDINGLUNAR LAUNCHLUNAR MODULEMANNED SPACECRAFTMOOMEARTH TRAJECTORIESSIM

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ASTRONOMICAL CATALOGSnssoc~~no~EA~oNS-(CONT)PHOTOOXIDATIONREACTION KINETICSVAWR PHASESASTEROID BELTSGS CELESTIAL BODIES. ASTEROID BELTS. . ASTEROIDS. . . AMOR ASTEROID. . . AMPHITRITE ASTEROID. . . AWL LO ASTEROIDS. . . CERES ASTEROID. . . CHIRON. . . ICARUS ASTEROID. . . TORO ASTEROID. . VESTA ASTEROID

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ARES (SPAcEcRAFr)USE ADVANCED RECONN ELECTRICSPACECRAFTARIELGS CELESTIAL BODIES. NATURAL SATELLITES. . CY SATELLITES. . . A R l U

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m A P H YSN (EXCLUDES ASTRONOMICALPHOTOGRAPHY)RT ASTRONOMICAL MAPSMAPPINGPLANETARY MAPPING

RT -BELTSMETEOROIDSREGIONSSOLAR SYSTEMSPACE DEBRISRlEllD METEOROIDSGS CELESTIAL BODIES ASTROLABESGS MEASURING INSTRUMENTS. INDICATING INSTRUMENTS. . ASTROLABESRT ALTIMETERSASTROMElRYASTRONOMICAL OBSERVATORIES

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ARRIVALSRT APPROACHLANDINGSTAR DISTRIBUTIONSTAR TRACKERSSTARS

m MlSSKlNSSPACE EXPLORATIONRTIFICIAL RADIATION BELTSGS PARTICLES. CHARGED PARTICLES. . MAGNETICALLY TRAPPED PARTICLES. . . RADIATION BELTS. . . . ARTIFICIAL RADIATION BELTS. TRAPPED PARTICLES. . MAGNETICALLY TRAPPED PARTICLES. . . RADIATION BELTS. . . . ARTIFICIAL RADIATION BELTSRT INNER RADIATION BELTNUCLEAR EXPLOSIONSOUTER RADIATION BELTmRADIATION

r n o M E T R YRT ASTROLABESASTRONOMICAL MAPSASTRONOMICAL PHOTOGRAPHYASTRONOMYM)UBLE STARSHIPPARCOS SATELLITEm MEASUREMENTPARALLAXSOLAR DIAMETERSTELLAR PARALLAX

ASTEROIDSGS CELESTIAL BODIES. ASTEROID BELTS. . ASTEROIDS. . . AMOR ASTEROID. . . AMPHITRITE ASTEROID. . . AWL LO ASTEROIDS. . . CERES ASTEROID. . . CHIRON. . . ICARUS ASTEROID. . . TORO ASTEROID m ASTRONAVIXSSN (USE OF A MORE SPECIFIC TERM ISRECOMMENDEPCONSULT THE TERMS. . VESTA ASTEROIDRT ASTEROID CAPTUREASTEROID MISSIONSASCENTGS ASCENT. CLIMBING FLIGHTRT BALLOONSDESCENT

LISTED BELOWRT AEROSPACE ENVIRONMENTSARTIFICIAL GRAVITYETEOROIDSSOLAR SYSTEM ASTRlONlCSASTRODYNAMICSASTRONAUTSSPACE DEBRISLUNAR MODULE ASCENT STAGETAKEOFF ASrPUSE AW LL O SOYUZ TEST PROJECT ASTRONOMYAUXILIARY PROPULSIONASCENT TRAJECTORIES AVIONICSBIOASTRONAUTICSBIOSATELLITE 3GS TRAJECTORIES. ASCENT TRAJECTORIESRT BALLISTIC TRAJECTORIESASTRlONtCSRT mASTRONAUTICSAVIONICSmCONTROLmELECTRONICSGUIDANCE (MOTION)SATELLITE COMMUNICATIONSINGLE EVENT UPSETSSPACECRAFT COMMUNICATION

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ASSOCIATION REACTIONSGS CHEMICAL REACTIONS. ASSOCIATION REACTIONSGAS-GAS INTERACTIONS. A~~~CIATIONEACTIONSRT ASTROPHYSICSCHEMICAL EOUlLlBRlUMRADIO NAVlGATlONSPACE NAVIGATIONSTROBIOLOQYUSE EXOBIOLOGYCONDENSINGENDOTHERMIC REAC TIONSEXOTHERMIC REA CTIONS

ASTRONOMICAL C ATALOGSGS DOCUMENTSCATALOGS (PUBLICATIONS)ASTRONOMICAL CAT ALOGSRT CLASSIFICATIONSEPHEMERIDESNORTHERN SKYSKY SURVEYS (ASTRONOMY)

ASTRODYNAMICSGS CLASSICAL MECHANICSSPACE MECHANICS. . ASTRODYNAMICSRT mASTRONAUTlCSASTRONOMICAL OBSERVATORIESCELESTIAL BODIESINTERSTELLAR CHEMISTRYMOLECULAR GASESMOLECULAR INTERACTIONSOXIDATIONPHOTOCHEMICAL REAC TIONS


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ASTRONOMICAL COORDINATESAS~RONM~ICAL OISSERVATORK~-(CONT.). . . SPARTAN SATELLITES. . . X RAY ASTROPHYSICS FACILITY. . ASTROPLANE

n s s ~ c w c o ~ c u . ums-(WNT.). . . . 050-5. . . . OS Og. . . . 050-7....OSO-8. . . QUASAT

A S T R ~ ~ L~rums-(WNT.)SOUTHERN SKYTABLES (DATA). .ROGISSIONRT ASTRODYNAMICSASTROLABESAsr RO NO WA L COORDINATESGS COORDINATES. ASTRONOMICAL COORDINATESRT AZIMUTHCELESTIAL REFERENCE SYSTEMSCYLINDRICAL COORDINATESGEOCENTRIC COORDINATESNORTHERN SKYPLANETOCENTRIC COORDINATESPLANISPHERESPOLAR COORDINATESREFERENCE STARSSOLAR LONGITUDESPHERICAL CO ORDINATES

. . . SAS. . . . EXRORER 53 SATELLITE. . . . saslSTRONOMYCELESTIAL BODIESGEOPHYSICAL OBSERVATORIESJODRELL BANK OBSERVATORYLUNAR OBSERVATORIES . . . . SAS-2....SPIS3. . . SPACE INFRARED TELESCOPEFACILITY. . . SPARTAN SATELLITES. . . X RAY ASTROPHYSICS FACILITYRT ROSAT MISSIONSPACEBORNE ASTRONOMY~ o R TH E R NSKYR A W ASTRONOMYSOUTHERN SKYSPACEBORNE TELESCOPESTELESCOPES

ASTRONOMICAL SPE ;ROSCOPYGS SPECTROSCOPY. ASTRONOMICAL SPECTROSCOPYRT ASTRONOMYASTRONOMICAL PHOTO aRAPHYGS IMAGERY. ASTRONOMICAL PHOTOGRAPHYASTRONOMICAL MAPSGS MAPS. ASTRONOMICAL MAPS. . PLANISPHERESRT ASTROGRAPHYASTROMETRYCELESTIAL REFERENCE SYSTEMSCELESTIAL SPHERELUNAR MAPS

PHOTOGRAPHY, ASTRONOMICAL PHOTOGRAPHYRT AERIAL PHOTOGRAPHY CONTINUOUS SPECTRAELECTROMAGNETIC SPECTRAINFRARED SPECTROSCOPYASTROMRRYASTRONOMYATMOSPHERIC WINDOWSBAKER-NUNN CAMERABLACK AND WHITE PHOTOGRAPHY

ORGANIC SOLIDSRADIAL VELOCITYRADIATION SPECTRARADIO ASTRONOMYRADIO SPECTROSCOPYRAMAN SPECTROSCOPYSOLAR SPECTRASOUTHERN SKYSPECTRASPECTROSCOPIC TELESCOPESSTELLAR SPECTRAULTRAVIOLET SPECTROSCOPYVISIBLE SPECTRUMX RAY SPECTROSCOPY

C~RONAGRAPHSDIFFRACTION LIMITED CAMERASELHSKIO-OPTICAL PHOTOGRAPHYASTRONOMICAL M0gEf.S

UF ORRERIESGS MODELS. ASTRONOMICAL MODELS. . DENSITY WAVE MODEL FAINT OBJECT CAMERAINFRARED ASTRONOMY. . STELLAR MODELSRT BIG BANG COSMOLOGYCOROTATION LALLEMAND CAMERASLUNAR PHOTOGRAPHSLUNAR PHOTOGRAPHYREFERENCE STARSROCKET-BORNE PHOTOGRAPHYSATELLITE-BORNE PHOTOGRAPHYSCHMIDT CAMERASSOUTHERN SKY

COSMOLOGYMATHEMATICAL MODELSMOLECULAR CLOUDSPLANETARIUMSREISSNER-NORDSTROM SOLUTIONSOLAR NEUTRINOSSOLAR OSCILLATIONSSTELLAR OSCILLATIONS

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~ O N O M I C A L , E TH ER LAN DS S ATEL LI TEUF ANSGS OBSERVATORIES. ASTRONOMICAL OBSERVATORIESASTRONOMICAL PHOTOMETRYGS OPTICAL MEASUREMENT. PHOTOMETRY. . ASTRONOMICAL PHOTOMETRY . RADIO ASTRONOMY. SPACEBORNE ASTRONOMY. ULTRAVIOLET ASTRONOMY. . ASTRONOMICAL SATELLITES. . . -AL NETHERLANDS

SATELLIKE. . . STELLAR SPECTROPHOTOMETRYATMOSPHERIC WINDOWSBLINKINGCOMETARY ATMOSPHERESDIAL SATELLITE . X RAY ASTRONOMY. . X RAY SOURCES. . . X M Y B INARIESRT mAEROSPACE SCIENCESAMOR ASTEROIDAPOLLO ASTEROIDSASTROLABESA S TR OM rn Y

RT NETHERLANDSINFRARED PHOTOMETRYSPECTROPHOTOMETRYTELEPHOTOMETRY

ASTRONOMICAL OBSERVATORIESGS OBSERVATORIES. ASTROWOWGAL OBSERVATORIES. . ASTRONOMICAL SATELLITES. . ASTRONOMICAL NETHERLANDSSATELLITE m - L S A T E u J l mGS ARTIFICIAL SATELLITES. SCIENTIFIC SATELLITES. . ASTRONOMICAL SATELLITES. . . GAMMA RAY OBSERVATORY. . . HUBBLE SPACE TELESCOPE. . . SPACE INFRARED TELESCOPE

mASTRONAUTICSASTRONOMICAL OBSERVATORIESASTRONOMICAL PHOTOGRAPHY. :GAMMA RAY OBSERVATORY. . . HEAO ASTRONOMICAL SPECTROSCOPYASTROPHYSICSCELESTIAL BODIESCELESTIAL MECHANICSEARTH LIMB

. . . . HEAO 1. . . . H m 2. . . . HEAO 3. . . HUBBLE SPACE TELESCOPE. . . INFRAR ED ASTRONOMY SATELLITE. . . INFRARED SPACE OBSERVATORYFACILITY. . . X RAY ASTROPHYSICS FACILITYOBSERVATORIES. ASTRONOMICAL OBSERVATORIES. . ASTRONOMICAL SATELLITES

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mPHYSlCAL SCIENCESRELIC RADIATIONmSCIENCESELENOLOGYSIDEREAL TIMESKY SURVEYS (ASTRONOMY)SOLAR NEIGHBORHOODSOLAR PARALLAXSOUTHERN SKYSPACEBORNE TELESCOPESSTELLAR MAGNITUDESTELLAR MODELSSTELLAR OSCILLATIONSTELESCOPES

ASTROPHYSICSUF GEOASTROPHYSICSGS ASTROPHYSICS. COMPUTATIONAL ASTROPHYSICS. STELLAR PHYSICS. . SOLAR PHYSICS. . . . SASJ. . . SPACE INFRARED TELESCOPEFACILITY


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ATMOSPHERIC ELECTRICITYATMOSPHERES-(CONT)PLANETARY ATMOSPHERESPLANETARY IONOSPHERESPRIMITIVE EARTH ATMOSPHERESATELUTE ATMOSPHERES

~smo~nwcs-(CONT)RT ACCRETION DISKSASSOCIATION REACTIONSASTRONOMYBRIGHTNESS DISTRIBUTIONBRIGHTNESS TEMPERATURECELESTIAL BODIESCELESTIAL MECHANICSCOSMOLOGYDEGENERATE M A l l E RDENSE PLASMASDISK OALAXlESGALACTIC EvOLUTKX(

WlND (METEOROLOGY)WlND DIRECTIONWlND PROFILESWINDPOWER UTILIZATIONOLAR ATMOSPHERESTELLAR ATMOSPHERESURANUS ATMOSPHERE ATMO!iPHERIC COUPOSlTlONGS COMPOSITION (PROPERTY). ATWOSPmRlC COMPOSITION. . ATMOSPHERIC MOISTURE. . ONOSPHERIC COMPOSITIONRT AERONOMY

A-ERIC ABSORPTIONUSE ATMOSPnERlC AllENUATION

EWMA RAY ASTRONOMYGRAND UNIFIED THEORYGRAVrrATlONAL COUAPSEUF ATMOSPHERIC ABSORPTIONGS ATTENUATION. ATMOSPHERE AlTENUATION. . AURORAL ABSORPTIONRT ACOUSTIC ATENU ATIONATMOSPHERIC LASERSCOSMIC RAY ALBEDOELECTROMAGNETIC ABSORPTIONELECTROMAGNETIC SCAlTERINGELECTROMAGNETIC WAVE

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RT AIR CONDUCTIVITYr CONDUCTIVITYELECTRICAL RESISTIVITYTHERMAL CONDUCTIVITYSTROPLANESN (LIMITED TO THE EUROPEAN AIRBORNEASTRONOMICAL OBSERVATOR Y)GS OBSERVATORIES. ASTRONOMICAL OBSERVATORIES. ASTROPLANERT A-300 AIRCRAFT

ATMOSPHERIC MN SlT YGS DENSITY (MASSIVO LUME ). ATMOSPHERIC DENSITYRT AIR POLLUTIONBOLTZMANN DISTRIBUTIONAIRBORNE EQUIPMENTINFRARED TELESCOPES mDENSlTYDENSITY (NUMBERIVOLUME)ELECTRON DENSITY (CONCENTRATION)ASYMPTOTIC GIANT BRANCH STARSUF AGB STARSGS CELESTIAL BODIES. STARSHUMIDITYION DENSITY (CONCENTRATION)MAGNETOSPHERIC ELECTRON DENSITYMAGNETOSPHERIC ION DENSITYMAGNETOSPHERIC PROTON DENSITYTMOSPHERIC CIRCULATIONUF WlND CIRCULATIONGS CIRCULATION. ATMOSPHERIC CIRCULATION. . ZONAL FLOW (METEOROLOGY)RT ADVECTIONAIR CURRENTSAIR LAND INTERACTIONSAIR MASSES

. . GIANT STARS. . . ASYMPTOTIC GIANT BRANCHSTARS METEOROLOGYPARTICLE DENSITY (CONCENTRATION)PLANETARY ATMOSPHEREST CARBON STARSCOLOR-MAGNITUDE DIAGRAMHERTZSPRUNG-RUSSELL DIAGRAMLATE STARSM STARSPLASMA DENSITYPROTON DENSITY (CONCENTRATION)SPACE DENSITY

MlRA VARIABLESRED GIANT STARS ATMOSPHERIC DIFFUSIONGS DIFFUSION. ATMOS PtiERlC DIFFUSION

ANNUAL VARIATIONSATMOSPHERIC GENERAL CIRCULATIONEXPERIMENTSTARSSTELLAR EVOLUTIONSTELLAR MASS EJECTION AT BOLTZMANN DISTRIBUTIONMOLECULAR DIFFUSIONBAROCLlNlC INSTABILITYBRUNT-VAISALA FREQUENCYCIRCULATION DISTRIBUTIONCIRCUMPOLAR W ESTERLIESCLIMATOLOGYPOLLUTION TRANSPORTRADlO SCAlTERINGTURBULENT DIFFUSIONr ATMOSPHERESSN (USE OF A MORE SPECIFIC TERM ISREWMM ENDEPCON SUL T THE TERMS

LISTED BELOWAT AIRARGON-OXYGEN ATMOSPHERESATMOSPHERIC PRESSURE

CYCLOGENESISEARTH ATMOSPHEREGROUND WlNDINTERTROPICAL CONVERGENT ZONESJET STREAMS lMETEOROLOGYl

ATMOSPHERIC EFFECTSRT AEROSOLSAIR POLLUTIONATMOSPHERIC CHEMISTRYATMOSPHERIC CORRECTION-P EFFECTSEROSIONEXPOSURE

CABIN ATMOSPHERESCONTROLLED ATMOSPHERESEARTH ATMOSPHEREMERlDlONAL FLOWMIDDLE ATMOSPHEREMIXING HEIGHTENVIRONMENTSEQUATORIAL ATMOSPHEREGAS MIXTURESGASESHELIUM-OXYGEN ATMOSPHERES

MONSOONSPLANETARY METEOROLOGYPLANETARY WAVESPOLLUTION TRANSPORTSEA BREEZE

RUSTINGSOIL EROSIONTURBULENCEVEGETATIVE INDEXWlND EFFECTSWlND EROSIONHYPOBARIC ATMOSPHERESLIFE SUPPORT SYSTEMS SOUTHERN OSCILLATIONSUPERROTATIONTORNAWESTROPICAL STORMSTURBOPAUSETYPHOONSUPWELLING WATERVERTICAL AIR CURRENTS

METEOROLOGYMIDDLE ATMOSPHERENEPTUNE ATMOSPHERENEUTRAL ATMOSPHERESNONGRAY ATMOSPHERESNONGRAY GAS

ATMOSPHERIC ELECTRICITYGS ELECTRICITY. ATMOSPHERIC ELECTRICITY. . IONOSPHERIC CU~RENTS. . . ELECTROJETS


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ATMOSPHERIC EMISSIONATMOSPHERIC ELECTRICITY-(WNI). . . . AURORAL ELECTROJETS. . . . EQUATORIAL ELECTROJETRT ATMOSPHERICSB A U LIGHTNINGCLOUD PHYSICSDUST STORMSEARTH ATMOSPHEREELECTRIC CORONAELKXFION DENSITY PROFILESUGHlNlNGUGHTNING SUPPRESSlONPRIMITIVE EARTH ATMOSPHERERING CURRENTSSTATIC ELECTRICITYTELLURIC CURRENTSATMOSPHERIC E M W O NUSE AIRGLOWATMOSPHERIC ENTRYUF PLANETARY ENTRYGS ATMOSPHERIC ENTRY. REENTRY. . HYPERBOLIC REENTRY. . HYPERSONIC REENTRY. . . UNCONTROLLED REENTRY(SPACECRAFT). . MANNED REENTRY. . SPACECRAFT REENTRY. . . UNCONTROLLED REENTRY(SPACECRAFT)

AEROCA~JREAERODYNAMIC HEATINGAEROMANEUVERINGBOUDESDESCENT TRAJECTORIESEARTH ATMOSPHEREo NTRYENTRY GUIDANCE ISTS)FALLINGGALILEO PROJECTGAS GUNSORBIT DECAYSPACE FLIGHT

ATMOSPHERIC MODELSGS MODELS. AWOSPHERIC MODELS. . REFERENCE ATMOSPHERESRT BAROCUNIC INSTABILITYCHAPMAN-FERRARO PROBLEMENVIRONMENT MODELSENVIRONMENT SIMULATIONMATHEMATICAL MODELSNUMERICAL WEATHER FORECASTINGOCEAN MODELSPRIMITIVE EARTH ATMOSPHERESOLAR OSCILLATIONSSTELLAR OSCILLATIONSVENUS CLOUDSWEATHER FORECASTING

ATMOSPHERIC MOISTUREGS COMPOSITION (PROPERTY). ATMOSPHERIC COMPOSITION. . ATMOSPHERIC MOISTURE. CONCENTRATION (COMPOSITION). . MOISTURE CONTENT. . ATMOSPHERIC MOISTUREMOISTURE. ATMOSPHERIC MOISTURERT ACID RAINANVIL CLOUDSCAP CLOUDSCIRROCUMULUS CLOUDSCIRROSTRATUS CLOUDSCLOUDS (METEOROLOGY)DEW POINTHUMIDITYPRECIPITATION (METEOROLOGY)PSYCHROMETERSWATER VAPOR

ATMOSPHERIC OPTICSRT ADAPTIVE OPTICSATMOSPHERIC LASERSCLARITYHAZEINFRARED ABSORPTIONLIGHT TRANSMISSIONOPACITY.aOPTICS

ATMOSPHERIC OPTICS-(~NI)TRANSPARENCEVEGETATIVE INDEXATMOSPHERIC PHYSICSUF AEROPHYSICSGS AlblOWHERIC PHYSlCS. CLOUD PHYSICS

RT AERONOMYBRUNT-VAISALA FREQUENCYDUST STORMSINTERNATIONAL MAGNETOSPHERICSTUDYMAGNETOSPHERE-IONOSPHEREC W W N GMETEOROLOGYNEUTRAL SHEETSm PHYSICSPLANETARY M r n R O L O G YSATELLITE ATMOSPHERES

ATMOSPHERIC PRESSUREUF BAROMETRIC PRESSUREPRESSURE. ATMOSPHERIC PRESSURERT ANTICYCLONESm ATMOSPHERES

CYCLOOENESISCYCLONESGAS PRESSUREGEOPOTENTIAL HEIGHTHIGH ALTITUDE PRESSUREISOBARS (PRESSURDISOSTATIC PRESSUREPRESSURE GRADIENTSRADIO OCCULTATIONSOUTHERN OSCILLATIONWEATHERATMOSPHEW RADIATIONGS ATMOSPHERK: RAD IATION. AURORAS. . AURORAL ARCS. . . RED ARCS. . RADIO AURORAS .. DAWN CHORUS. IONOSPHERIC NOISE. . WHISTLERS. SKY RADIATION

. . AIRGLOW. . . GEOCORONAL EMISSIONS. . . NIGHTGLOW. . . TWILIGHT GLOW. . DAYGLOW. STRATOSPHERE R ADIATION. TROPOSPHERIC RADIATIONRT CORPUSCULAR RADIATIONEARTH RADIATION BUDGETELECTROMAGNETIC R ADIATIONEXTRATERRESTRlAL RADIATIONGREENHOUSE EFFECTIONOSPHERIC HEATINGLIGHT (VISIBLE RADIATION)vi RADIATION-RAYSSECONDARY COSMIC RAYSTERRESTRIAL R ADIATIONVLF EMISSION RECORDERS

ATMOSPHERIC REFRACTIONGS REFRACTION. ATMOSPHERIC REFRACTION. . RADIO WAVE REFRACTIONRT ELECTROMAGNETIC RADIATIONLIGHT TRANSMISSIONREFRACTIVITYSOLAR RADIATIONWAVE DISPERSION

ATMOSPHERIC SCATTERINGGS SCATTERINGWAVE SCATTERING. . ATMOSPHERIC SCATTERING. . . TROPOSPHERIC SCATTERINGRT ATMOSPHERIC LASERS. CIRCUMSOLAR RADIATIONDIFFRACTIONOlFFUSlONELECTROMAGNETIC SCATTERINGHALOSLIGHT SCAVERINGMICROWAVE SCATTERING

amosmaa SCA~RINQ-(WNT.)RADIO SCATTERINGSIGNAL FADINGVEGETATIVE INDEXATMOSPHERIC SHEUSUSE ATMOSPHERIC STRATIFICATION

ATMOSPHERIC STRA nFICAllO NUF ATMOSPHERIC SH EU SGS m A n F I c A n o N. ATMOSPHERIC SCRATIFlCATlOMRT BRUNT-VAISALA FREQUENCYPLASMA LAYERSSURFACE LAYERSATMOSPHERIC TEMPERATUREGS TEMPERATUREA ~ & P H E R I CTEMPERATURE. . AURORAL TEMPERATURE. . IONOSPHERIC TEMPERATURERT AMBIENT TEMPERATURECLIMATE CHANGEGAS TEMPERATUREISOTHERMSLACATE (EXPERIMENT)PLANETARY ATMOSPHERESPLANETARY TEMPERATURERADIO OCCULTATIONSODAR

SOUND DETECTING AND RANGINGSUBZERO TEMPERATURETEMPERATURE GRADIENTSTEMPERATURE INVERSIONSTHERMAL RESOURCESWEATHERATOMIC CLOCKSGS MEASURING INSTRUMENTS. TIME MEASURING INSTRUMENTS. . CLOCKS. . . A T O ~LOCKSRT AUTONOMOUS SPACECRAFT CLOCKSCHRONOMETERSCLOCK PARADOXFREQUENCY STANDARD SGAS MASERSMASERSMOLECULAR BEAMSTIME MEASUREMENTATOMIC SPECTRAGS SPECTRA. ATOMIC SPECTRART BALMER SERIESLYMAN ALPHA RADIATIONLYMAN BETA RADIATIONLYMAN SPECTRAPASCHEN SERIESRYDBERG SERIESA'ITIN DE (INCLINATION)UF SPATIAL ORIENTATIONTILTTILTINGGS AlTlTUD E (INCLINATION)

, PITCH (INCLINATION). ROLL. SATELLITE ORIENTATIONYA W....RT HORIZON TAL ORIENTATIONINSTRUMENT ORIENTATIONMISALIGNMENT

sMOTIONmORlENTATlONmPOSITIONmSPACE ORIENTATIONSTABILITY AUGMENTATIONTILTMETERSVERTICAL ORIENTATION

AUGER EFFECTRT COSMIC RAY SHOWERSlo EFFECTSELECTRON TRANSITIONS

AUGER SPECTROSCOPYGS SPECTROSCOPYAUGER SPECTROSCOPYRT CHEMICA L ANALYSISELECTRON TRAN SITIONSSPECTROSCOPIC -ANALYSISTHERMITES


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AURGA CONSTEWTIONGS CONSTEWTIONS. AURIGA CONSTrWTKINRT ZETA AURIGAE STARAURORAL ACTIVITYUSE AURORASAURORAL ARCS

GS ATMOSPHERIC RADIATION. AURORAS. .AURORAL ARCS. . . RED ARCSKT mARCS

AURORAL IONIUTIONGS IONIZATION. GAS IONIZATION. . ATMOSPHERIC IONIZATION. . . AURORAL IONIZATIONRT AURORASEXCITATIONLIGHT EMISSIONPHOTOIONIZATIONRED ARCSAURORAL IRRADlATK)NGS IRRADIATION. AURORAL IRRADIATIONRT AURORASELECTRON IRRADIATION

EXCITATIONION IRRADIANONM T O NI NI Z A T I O N

GS TEMPERATURE. ATMOSPHERIC TEMPERATURE..AURORAL TEMPERATURERT AURORASION TEMPERATUREIONOSPHERIC TEMPERATUREAURORAL ZONESGS REGIONS. AURORALZONESRT AURORASMAGNETIC POLESPOLAR RADIO BLACKOUTPOLAR REGIONSAURORASUF AURORAL ACTIVITYPOLAR AURORASGS ATMOSPHERIC RADIATION. AURORAS. . AURORAL ARCS. . . RED ARCS. . RADIO AURORASRT AERONOMYAIRGLOWAURORAL IONIZATIONAURORAL IRRADIATIONAURORAL TEMPERATUREAURORAL ZONESDAWN CHORUSEARTH ATMOSPHEREELECTRON PRECIPITATIONESRO 4 SATELLITELIGHT EMISSIONMAGNETIC DISTURBANCESNIGHT SKYPROTON PRECIPITATIONSKY BRIGHTNESSSOLAR ACTIVITYX RAYSA US T RA Lm SGS CELESTIAL BODIES. METEORITES. . STONY METEORITES. . . TEKTITES. . . AUSTRAUTESRT BEDlASlTESAXAFUSE X RAY ASTROPHYSICS FACILITYAZIMUTHUF SOLAR AZIMUTHRT ALTITUDEANGLES (GEOMETRY)ASTRONOMICAL COORDINATESBEARING (DIRECTION)

~MUTH-(CONZ)CELESTIAL RER REN CE SYSTEMSmDIRECTIONELEVATION ANGLELOOK ANGLES (TRACKING)NAVIGATIONmORlENTATIONPOSITION (LOCATION)

B STARSUF HELIUM STARSGS CELESTIAL BODIES. STARS. .EARLY STARS. . . HOT STARS. . . . B STARS. . . . . SIGMA ORIONISRT BLUE STARSHERBIG-HARO OBJECTSUMB BRIGHTENINGLIMB DARKENINGPfCUUAR STARSSTELLAR COMPOSITIONWOLF-RAYET STARSBACKGROUND R ADIATION

RT BIG BANG COSMOLOGYCONTINUOUS RAD IATIONCOR WSCU LAR RADIATIONCOSMIC BACKGROUND EXPLORERSATELUTECOSMIC NOISEELECTROMAGNETIC NOISEEXTRATERRESTRIAL RAD IATIONHIGH ALTITUDE TESTSIONOSPHERIC NOISEceRADIATIONRELIC RADIATIONSKY RADIATION

BACKSCAlTERINOGS SCATTERING. BAcKSCA~TERINGRT FORWARD SCA TERlN GLASER PLASMA INTERACTIONSN U C ~CATTERINGSCArnR PROPAGATION

BAKER-NUNN CAMERAGS OPTICAL EQUIPMENT. CAMERAS. . BAKER-NUNN CAMERAPHOTOGRAPHIC EQUIPMENT. CAMERAS. . BAKER-NUNN CAMERAAT ASTRON OMICAL PHOTOGRAPHYSCHMIDT CAMERASBAUOOHBORNE INSTRUMENTSGS MEASURING INSTRUMENTS. BAUO OKBO RNE INSTRUMENTSRT AIRBORNE EOUIPMENTBALLOONSHIGH ALTITUDE BALLOONSMETEOROLOGICAL INSTRUMENTSRADIOSONDESTELESCOPESBALMER SERIES

GS SPECTRA. RADIATION SPECTRA. . ELECTROMAGNETIC SPECTRA. . . LlNE SPECTRA. . . . BALMER SERIESRT ABSORPTION SPECTRAATOMIC SPECTRAELECTRON TRANSITIONSEMISSION SPECTRA

BARRED GALAXIESGS CELESTIAL BODIES. GALAXIES. . SPIRAL GALAXIES. . . BARRED GALAXIESRT DISK GALAXIESGALACTIC STRUCTUREHUBBLE DIAGRAML~CALGROUP (ASTRONOMY)STAR CLUSTERSSTAR DISTRIBUTIONSTARSVIRGO GALACTIC CLUSTER

BARYONSGS PARTICLES. ELEMENTARY PARTICLES. . FERMIONS. . . BARYONS. . . . HYPERONS. . . . . XI HYPERONS. . . . OMEGA-MESONS. . . . RHO-MESONS. . . . SIGMA-MESONS. HADRONS. . . BARYONS. . . . OMEGA-MESONS. . . . RHOMESONS. . . SIGMA-MESONSRT BARYON RESONANCECOLD NEUTRONSDARK MATTERETA-MESONSFAST NEUTRONSGRAVlTlNOSKAONSMESON RESONANCEMESONSMUONSNEUTRONSNUCLEONSPHOTONEUTRONSPIONSPROTONSRECOIL PROTONSS6LAR PROTONSTHERMAL NEUTRONS

BCS THEORYUF BARDEEN-COOPER-SCHRIEFFERTHEORYRT MANY BODY PROBLEMSUPERCONDUCTIVITYmTHEORIESTHERMODYNAMIC COUPLINGB E DlA S m SGS CELESTIAL BODIES. METEORITES. . STONY METEORITES. . . TEKTITES. . . . B E D l A S m SAT AUSTRALITES

m BELTSSN (USE OF A MORE SPECIFIC TERM ISRECOMMENDEPGONSULT THE TERMSLISTED BELOW)RT ASTEROID BELTSCABLES (ROPES)FASTENERSGIRDLESPROTON BELTSPULLEYSRADIATION BELTSREGIONSROUSE BELTSSEAT BELTSTERRESTRIAL DUST BELTBESSEL-BREDICHIN THEOR YRT COMETSKOHOUTEK COMETRADIATION PRESSURE

H BETA LlNEH GAMMA LINE BETA INTERACTIONSH LINES USE WEAK lNTERACTlONS (FIELD THEORY)HYDROGEN BIG BANG COSMOLOGYBARDEENCOOPER-SCHRIEFFER THEORY GS COSMOLOGYUSE BCS THEORY BIG BANG COSMOLOGYRT ASTRONOMICAL MODELSBACKGROUND R ADIATIONBAROMETRIC PRESSURE COSMIC RAYSUSE ATMOSPHERIC PRESSURE GALACTIC EVOLUTION


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BINARY STARSBIG BIN^ cosuomv-(WNT)GAMMA RAY BURSTSGRAND UNIFIED THEORYGRAVITATIONAL CONSTANTRELATIVITYRELIC RADIATIONUNIVERSEBINARY STARSGS CELESTIAL BODIES. STARS. . DOUBLE STARS. . B W Y STARS. . . CATACLYSMIC VARIABLES. . . . COMPANION STARS. . . . . NEMESIS (STAR). . . . ECLIPSING BINARY STARS. . . . . DWARF NOVAE. . . . . LAMBDA TAURI STARS. . . . . ZETA AURIGAE STAR. . . . SIGMA ORIONIS

. . . . SYMBIOTIC STARSRT ACCRETION DISKSLIMB DARKENINGSTAR CLUSTERSSTELLAR PARALLAXSTELLAR SYSTEMSTWO BODY PROBLEMVARIABLE STARSBKMENESISUSE BIOLOGICAL MOLU TIONBlOLOGlCAL EVOLUTIONUF BlOGENESlSGS EVOLUTION (DEVELOPMENT). BIOLOGICAL EVOLUTION. . ABIOGENESISRT ARCHAEBACTERIA

m BIOLOGYCHEMICAL EVOLUTIONEUKARYOTESGENE EXPRESSIONGENETICSLIFE SCIENCESMUTAGENSMUTATIONSPANSPERMIAPROKARYOTESPROTEIN SYNTHESISBL LACERTAE OBJECTS

GS CELESTIAL BODIES. BL LACERTAE OBJECTSRT EXTRAGALACTIC RADIO SOURCESGALAXIESIRREGULAR GALAXIESLUMINOUS INTENSINPOLARIZATION W AVES)RADIANT FLUX DENSITYRADIO SOURCES (ASTRONOMY)BUCK AND w n m PHOTOGRAP~YGS IMAGERY. BLACK AND wnm P m ) io Qa A rn yPHOTOGRAPHY. B U C K AND WHITE PHOTOGRAPHYRT ALL SKY PHOTOGRAPHYASTRONOMICAL PHOTOGRAPHYAUTORADIOGRAPHYCHRONOPHOTOGRAPHYCINEMATOGRAPHYCLOUD PHO1JGRAPHYCOLOR PHOTOGRAPHY

ELECTR aOPTlC AL PHOTOGRAPHYELECTRON PHOTOGRAPHYFRAME PHOTOGRAPHYINFRARED PHOTOGRAPHYLUNAR PHOTOGRAPHYPHOTOMlCROGRAPHYPHOTORECONNAISSANCERADAR PHOTOGRAPHYROCKET-BORNE PHOTOGRAPHYSATELLITE-BORNE PHOTOGRAPHYSCHLIEREN PHOTOGRAPHYSHADOWGRAPH PHOTOGRAPHYSPACEBORNE PHOTOGRAPHYSPECTROHELIOGRAPHSSPECTROPHOTOGRAPHYSTEREOPHOTOGRAPHYULTRAVIOLET PHOTOMETRYUROGRAPHYBU C K BODY RADIATIONGS ELECTROMAGN ETIC RADIATION

BUCK BODY RADIATION-(WNT). THERMAL RADIATION. . BU C K BODY RADIATIONRT BRIGHTNESS DlSTRIBUS1ONBRIGHTNESS TEMPERATUREEMlSSlVlTYHEAT RADIATORSHOHLRAUMSINFRARED RADIATIONKIRCHHOFF LAW OF RADIATIONUGHT WlSlBLE RADIATION)NONGRAY ATMOSPHERESNONGRAY GASPLANCKS CONSTANTRADIANCEmRADIATIONSUNUGHTULTRAVIOLET RADIATION

BLACK HOLES (ASTRONOMY)GS CELESTIAL BODIES. STARS. . BLACK HOLES (ASTRONOMY)RT ACCRETION DISKSDEGENERATE MATTERGRAVITATIONAL COLLAPSEGRAVITATIONAL LENSESNAKED SINGULARITIESREISSNER-NORDSTROM SOLUTIONSUPERNOVA REMNANTSwnm HOLES (ASTRONOMY)X RAY BINARIES

BLUE STARSGS CELESTIAL BODIES. STARS. . EARLY STARS. . . HOT STARS. . . . BLUE STARSRT A STARSB STARS0 STARS

BODY TEMPERATURE (NOKBIOLOGICAL)USE TEMPERATUREBOUDESGS CELESTIAL BODIES. METEOROIDS. . BOLIDES. . . CYRILUD METEOROIDSRT ATMOSPHERIC ENTRY

ATMOSPHERIC timnffimFIREBALLSMETEOR TRAILSMETEORITESMETEOROID SHOWERSPRIBRAM METEORITEBOLOGRAWUSE BOLOMETERSaoLoMrnr+sUF BOLOGRAMSGS MEASURING INSTRUMENTS. RADIATION MEASURING INSTRUMENTS

. . B o L o M m R SRT DlCKE RADIOMETERSELECTRICAL MEASUREMENTHEAT MEASUREMENTINFRARED DETECTORSPHOTOMETERSPOTENTIOMETERS (INSTRUMENTS)RADIATION PYROMETERSRADIOMETERSRESISTANCE THERMOMETERSTEMPERATURE MEASUREMENTTEMPERATURE MEASURINGINSTRUMENTS

rn BOMBARDMENTSN (USE OF A MORE SPECIFIC TERM ISRECOMMENDED-CONSULT THE TERMSLISTED BELOW)RT HYPERVELOCITY PROJECTILESIRRADIATIONMETEORITIC DAMAGESPUTTERINGBD NW C METEORITEGS CELESTIAL BODIES

. METEORITES. . STONY METEORITES. . . ACHONDRITES. . . . BO NW C METEORITE

BOSE-EINSTEIN mnmcsUSE QUANTUM STATISTICSBREMSSTRAHLUNGGS ELECTROMAG NETIC RADIATION. BREMSSTRAHLUNGRT CERENKOV RADIATIONDIFFRACTION RADIATIONELECTRON PHOTON CASCADES

EIECIRON RADIATIONFAR ULTRAVIOLET RADIATIONW M A RAY BURSTSGAMMA RAYSNUCLEAR RADIATIONRELATIVISTIC PLASMASSYNCHROTRON RADIATIONX RAYS

BRIGHTNESSGS ELECTROMAG NETIC PROPERTIESOPTICAL PROPERTIES. . BRIGHTNESSRT BlSTATlC REFLECTIVITYBRIGHTNESS DISTRIBUTIONCOLORDIMMINGEMlSSlVlTYFLUX (RATE)GLAREHUMAN FACTORS ENGINEERINGILLUMINANCEILLUMINATINGINCANDESCENCEm NTENSITYLIGHT (VISIBLE RADIATION)LlMB BRIGHTENINGLUMINANCELUMINESCENCELUMINOSITYLUMINOUS INTENSITYLUSTERRADIANCERADIANT FLUX DENSITYREFLECTANCESKY BRIGHTNESSSTELLAR LUMINOSITYVlSlBIUTYVISIONBRIGHTNESS DtSTRleVnO NGS DISTRIBUTION (PROPERTY)

. BRMHTNESS DISTRIBUTIONELECTROMAGNETIC PROPERTIES. OPTICAL PROPERTIES. . BRIGHTNESS DISTRIBUTIONSTATISTICAL DISTRIBUTIONS. BRIGHTNESS DISTRIBUTIONAT ASTROPHYSICSBLACK BODY RADIATIONBRIGHTNESSBRIGHTNESS TEMPERATUREmDlSTRlBUTlONGAIACTIC RADIATIONPHOTOGRAPHYRADIANT FLUX DENSITYRADIO ASTRONOMYSOLAR GRANULATIONSTELLAR LUMINOSITYBRIGHTNESS TEMPERATUREGS TEMPERATURE

. BRIGHTNESS TEMPERATUREAT ASTROPHYSICSBLACK BODY RADIATIONBRIGHTNESS DISTRIBUTIONLlMB BRIGHTENINGMETEOROLOGYPHOTOGRAPHYRADIO ASTRONOMYTEMPERATURE MEASUREMENT

BROKEN SYMMETRYWF SYMMETRY B REAKIN GGS SYMMETRY. BROKEN SYMMETRYRT GRAND UNIFIED THEORYMATWEMATICAL MODELSSUPERGRAVITYSUPERSYMMETRYTHEORETICAL PHYSICSBRUDERHEIM METEO RITEGS CELESTIAL BODIES. METEORITES

. . STONY METEORITES


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CELESTIAL BODIES

BURSISGS BURSTS. GAMMA RAY BURSTS. RADIO BURSTS. . W A R R AD IO B UR STS. . . TYPE 2 BURSTS. . . TYPE 3 BURSTS. . . TYPE 4 BURSTS. . . TYPE 5 BURSTSRT DD DISTURBANCESEMISSIONEXPLOSIONSFRAGMENTATIONIMPLOSIONSRUPTURING

C STARSUSE CARBON STARSC-M DIAGRAMUSE COLOR-MAGNITUDE DIAGRAMCALDERASGS LANDFORMS. CALDERASRT CONES (VOLCANOES)CRATERSLAVAMARS VOLCANOESVOLCANOESVOLCANOLOGYCALUSTOGS CELESTIAL BODIES. NATURAL SATELLITES. . ICY SATELLITES. . . CALUSTO~. . JUPITER SATELLITES. . . GALILEAN SATELLITES. . . . C A U S T ORT CHARONGANYMEDE

10JUPITER (PLANET)CANADIAN SPACE -AMGS PROGRAMS. SPACE PROGRAMS. . CANADIAN SPACE PROGRAM. . . ALOUElTE PROJECTRT AEROSPACE TECHNOLOGY TRA NSANIK SATELLITESANlK 1ANlK 2ANlK 3CANADACANADIAN SPACECRAFTCOMMUNICATIONS TECHNOLOGYSATELLITENASA PROGRAMSRADARSATSCIENTIFIC SATELLITESSYNCHRONOUS SATELLITESTECHNOLOGY ASSESSMENT

TECHNOLOGY UTILIZATIONCANALSGS LANDFORMS. CANALSWATERWAYS. CANALSRT DITCHESFLOOD CONTROLFLUID FLOWGATES (OPENINGS)GREAT LAKES (NORTH AMERICA)IRRIGATIONMARS SURFACEMATERIALS HANDLINGPANAMASEEPAGESTRAITSTROUGHSWATER FLOW

CARBON STARSUF C STARSGS CELESTIAL BODIES. STARS. . GIANT STARS. . . RED GIANT STARS. . . . CARBON STARS. . LATE STARS. . . COOL STARS. . . . CARBONSTARSRT ASYMPTOTIC GIANT BRANCH STARSIRREGULAR VARIABLE STARSMlRA VARIABLESR CORONAE BOREALIS STARSSTEUAR COMPOSmONSUBGIANT STARSWOLF-RAYET STARSCARBONACEOUS CHONDRtTESGS CELESTIAL BODIES. METEORITES

. . STONY METEORITES

. . . CHONDRITES. . . . CARBONACEOUS CHONDRITES. . . . . AUENDE METEORITE. . . . . MURCHISON METEORITECARBONACEOUS METEORITESGS CELESTIAL BODIES. METEORITES. . STONY METEORITES. . CHONDRITES. . . . CARllONICeOUS METEORmS. . . . . ALAS METEORITE. . . . COLD BOKKEVELD METEORITE. . . . . IVUNA METEORITE. . . . . MURRAY METEORITE. . . . . ORGUEIL METEORITE. . . . . TONK METEORITERT EXOBIOLOGYMETEORITIC COMPOSITIONCARRIM TON ROTATIONUSE SOLAR ROTATIONCARTWRAPHYUSE MAPPINGCASSEBRAIN OPTICS

RT FIBER o p n c sGEOMEfFlICAL OPTICSMIRRORSmOPTICSREFLECTING TELESCOPESTELESCOPES

CASSOPEIA AGS CELESTIAL BODIES. NEBULAE. . CASSOPEIA A. RADIO SOURCES (ASTRONOMY). . CASSlOPEIA ART ORIO N NEBULA

CASSOPEIA CONSTELLATIONGS CONSTELLATIONS. CAWOPEIA CONSTrUATlONRT CELESTIAL BODIESCELESTIAL SPHERESTARSCATACLYSMC VARIABLESGS CELESTIAL BODIES. STARS

. . WUBLE STARS. . . BINARY STARS. . . . CATACLYSMN: VARIABLES

. . VARIABLE STARS. . . CATACLYSMIC VARIABLESRT DWARF STARSECLIPSING BINARY STARSFLARE STARSHOT STARSNOVAEPERIODIC VAR IATIONSSOLAR OSCILLATIONS. STELLAR FLARESSTELLAR MASS EJECTIONSTELLAR OSCILLATIONSWHITE DWARF STARSCELESCOPESGS ELECTRON TUBES. VACUUM TUBES

CELESCOPES-(WNT). . MICROWAVE TUBES. . . CELESCOPESMICROWAVE EQUIPMENT. MICROWAVE TUBES. . CELESCOPESMIRRORS. CELESCOPESOPTICAL EQUIPMENT. IMAGE CONVERTERS. .CELESCOPESTELESCOPES. CLLESMPESRT SOLAR INSTRUMENTSCELESTIAL BODIESGS CELESTIAL BODIES. ASTEROID BELTS. . ASTEROIDS. . . AMOR ASTEROID. . . AMPHITRITE ASTEROID

. . APOLLO ASTEROIDS. . . CERES ASTEROID. . CHIRON. . . ICARUS ASTEROID. . . TOR0 ASTEROID. . . VESTA ASTEROID. BL LACERTAE OBJECTS. COMFTS. . AREND-ROLAND COMET. . COMET HEADS. . COMET NUCLEI. . COMET TAILS. . ENCKE COMET. . GIACOBINI-ZINNER COMET. . GRIGGSKJEUERUP COMET. . HALLN'S COMET. . HUMASON COMET. . RASARAKI-ALCOCK COMET. . KOHOUTEK COMET. . MOREHOUSE COMET. . MRKOS COMET. SCHWASSMANN-WACHMANN COMET. . TEMPEL 2 COMET. . WEST COMET. FAINT OBJECTS. GALAXIES. . ACTIVE GALAXIES. . . MARKARIAN GALAXIES. . . RADIO GALAXIES. . . SEYFERT GALAXIES. . DISK GALAXIES. . DWARF GALAXIES. . ELLIPTICAL GALAXIES. . GALACTIC CLUSTERS. . . LOCAL GROUP (ASTRONOMY). . . . ANDROMEDA GALAXY. . . VIRGO GALACTIC CLUSTER. . IRREGULAR GALAXIES. . MAFFEl GALAXIES. . MAGELLANIC CLOUDS. . SPIRAL GALAXIES. . . BARRED GALAXIES. . . MILKY WAY GALAXY. . STARBURST GALAXIES. INFRARED SOURCES (ASTRONOMY). . INFRARED STARS. METEORITES. . HARLETON METEORITE. . IRON METEORITES. . . AROOS METEORITE. . . ODESSA METEORITE. . . SIKHOTE-ALIN METEORITE. . LAZAREV METEORITE. . MICROMETEORITES. . OKHANSK METEORITE. . STONY METEORITES. . . ACHONDRITES. . . . BONDOC METEORITE. . . . KAPOETA ACHONDRITE. . . . NORTON COUNTY ACHONDRITE. . . CHONDRlTES. . . BRUDERHEIM METEORITE. . . . CARBONACEOUS CHO WRITE S. . . . . ALLENOE METEORITE. . . . . MURCHISON METEORITE. . . . CARBONACEOUS METEORITES. . . . . ALAlS METEORITE. . . . . COLD BOKKEVELD METEORITE. . . . . IVUNA METEORITE. . . . . MURRAY METEORITE. . . . ORGUEIL METEORITE. . . . . TONK METEORITE. . . . HVlll'lS CHONDRiTE. . . . PANTAR CHONDRITES. . . . PRIERAM METEORITE


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CELESTIAL, GEODESYCELESTIAL B. . . TEKnTES. . . . AUSTRAUTES. . . . BEDlASlTES. . . TUNGUSK METEORITE. METEOROID SHOWERS. . AQUARID MmOROlDS. . ARIEnD METEOROIDS. . CYRILLID METEOROIDS. . DRACONID METEOROIDS. . GEMINID METEOROIDS. . LEONID METEOROIDS. . ORONID METEOROIDS. . PERSEID METEOROIDS. . QUADRANTID METEOROIDS. .TAURID METEOROIDS

. METEOROIDS. . AQUARID METEOROIDS. . ARlETlD METEOROIDS. . BOLIDES. . . CYRILUD METEOROIDS. DRACONID METEOROIDS. . GEMINID METEOROIDS

. . LEONID METEOROIDS

. MICROMETEOROIDS. . METEOROID DUST CLOUDS. . . . ZODIACAL DUST. . ORIONID METEOROIDS. . PERSEID METEOROIDS. .WADRANTID METEOROIDS. . RADIO METEORS. . SPORADIC METEOROIDS. . TAURID METEOROIDS. NATURAL SATELLITES. . CHARON. . CY SATELLITES. . . ARlEL. . . CALLISTO. . . DlONE. . . ENCELADUS. . EUROPA. . . GANYMEDE. . . HYPERION. . . IAPETUS. . . MlMAS. . . RHEA (ASTRONOMY). . . TETHYS. . . TlTANlA. . JUPITER SATELLITES. . . AMALTHEA. . . GALILEAN SATELUTES. . . CALUSTO. . . . EUROPA. . . . GANYMEDE. . . . 10. . MARS SATELLITES. . . DEIMOS. . . PHOBOS. MOON. . SATURN SATELLITES. . . DONE. . ENCELADUS. . . HYPERION. . . IAPETUS. . . JANUS. . . MlMAS. . . PHOEBE. . . RHEA (ASTRONOMY). . . TETHYS. . . TITAN. . TRITON. . URANUS SATELLITES. . . ARlEL. . . MIRANDA. . . OBERON. . . TlTANlA. . . UMBRIEL. NEBULAE. .CASSIOPEIA A. . CRAB NEBULA. . GUM NEBULA. . H I REGIONS. . H II REGIONS. . HERBIG-HARO OBJECTS. . ORION NEBULA. . PLANETARY NEBULAE. . REFLECTION NEBULAE. PLANETARY RINGS. . JUPITER RINGS. . SATURN RINGS. . URANUS RINGS. PLANETS. . EXTRASOLAR PLANETS. . GAS GIANT PLANETS. . . JUPITER (PLANET). . . NEPTUNE (PLANET)

CELESTIAL .%. . . SATURN (PLANET). . . URANUS (PLANET). .PLUTO (PLANET). . TERRESTRIAL PLANETS. . EARTH (PLANET). . . MARS ( M E T ). . . MERCURY (PLANET). . . VENUS (PLANET). PROTOPLANETS. RADIO SOURC ES (ASTRONOMY). . CASSIOPEIA A. . EXTRAGALACTIC RADIO SOURCES. . . RADIO GAIAXIES. . RADIO JETS (ASTRONOMY). . QUASARS. . RADIO STARS. . . WLSARS. SOLAR 2YSTEM. STAR CLUSTERS. . GLOBULAR CLUSTERS. . . HORIZONTAL BRANCH STARS. . OPEN CLUSTERS. . . PLEIADES CLUSTER. . . PRAESEPE STAR CLUSTERS. STARS. . BLACK HOLES (ASTRONOMY). . DOUBLE STARS. . . BINARY STARS. . . CATACLYSMIC VARIABLES. . . . COMPANION STARS. . . . . NEMESIS (STAR). . . ECLIPSING BINARY STARS. . . . . DWARF NOVAE. . . . . LAMBDA TAURI STARS. . . . . ZETA AURIGAE STAR. . . . SIGMA ORlONlS. . . . SYMBIOTIC STARS. .EARLY STARS. . . HOT STARS. . . . A STARS. . . . B STARS. . . . . SIGMA ORlONlS. . . . BLUE STARS. . . . 0 STARS. . . . WHITE DWARF STARS. . . . WOLF-RAYET STARS. . F STARS. . G STARS. . . SUN. . GIANT STARS. . . ASYMPTOTIC GIANT BRANCHSTARS. . . OMICRON CETl STAR. . . RED GIANT STARS. . . . CARBON STARS. . INFRARED STARS. . LATE STARS. . . COOL STARS. . . . CARBON STARS. . . . FLARE STARS. . . . K STARS. . . . M STARS. . . . . VAN BIESBROECK STAR. . . . MlRA VARIABLES. . . . OMICRON CETl STAR. . . . S STARS. . MAGNETIC STARS

. . MAIN SEQUENCE STARS. . . DWARF STARS. . . . DWARF NOVAE. . . . FLARE STARS. . . . RED DWARF STARS. . . SUN. . METALLIC STARS. . NEUTRON STARS. . . PULSARS. . PECUUAR STARS. . . SIGMA ORlONlS. . . SYMBIOTIC STARS. . PRAESEPE .STAR CLUST ERS. . PROTOSTARS. . . PRE-MAIN SEQUENCE STARS .

. . . . T TAURI STARS. . RADIO STARS

. . . PULSARS. . REFERENCE STARS. . SUBDWARF STARS. . SUBGIANT STARSSUPERGIANT STARS. R CORONAE BOREALIS STARSSUPERMASSIVE STARS

. . VARIABLE STARS. . . CATACLYSMIC VARIABLES

. . . CEPHEID VARIABLES. . . FLARE STARS

CELESTIAL BODESWN%. . . IRREGULAR VARIABLE STARS. . . . R CORONAE BOREALIS STARS. . . LAMBDA TAURI STARS. . . MlRA VARIABLES. . . . OMICRON c m STAR. . . NOVAE. . . . DWARF NOVAE. . . . HERCULES NOVA. . . SEMIREGULAR VARIABLE STARS. . . SUPERNOVAE. . . . SUPERNOVA 1987A. . . SYMBIOTIC STARS. . T TAURI STARS. WHITE HOLES (ASTRONOMY). . X RAY STARS. STELLAR SYSTEMSRT ARIES CONSTELLATIONAS+EROID CAPTUREAITAODYNAMICS-ASTRO~BESASTRONOMICAL OBSERVATORIESASTRONOMYASTROPHYSICSz ODIESCASSIOPEIA C ONSTELLATIONCENTAURUS CONSTELLATIONCORONA BOREALIS CONSTELLATIONCYGNUS CONSTELLATIONGRAVITATIONAL WAVESIMPACT MELTS

INTERSTELLAR M AT ERLYRA CONSTELLATIONORBITSSOLAR NEIGHBORHOODSPACE FLIGHTUNIVERSECELESTIAL GEODESYGS GEODESY. CELEST IAL GEODESYRT EXPLORER 29 SATELLITEEXPLORER 36 SATELLITEGEODETIC SATELLITESGEOS 1 SATELLITEGEOS 2 SATELLITEGEOS 3 SATELLITEINTERNATIONAL SATELLITE GEODESYU(PERIMENTTIMECELESTIAL MECHANICSGS CLASSICAL MECHANICS

. SPACE MECHANICS. . CELESTIAL MECHANICSR f ASTRODYNAMICSASTRONOMYASTROPHYSICSEPHEMERIDESEQUATIONS OF MOTIONFOUR BODY PROBLEMGRAVITATIONAL WAVESHYPERBOLIC TRAJECTORIESLAGRANGIAN EQUILIBRIUM POINTSLONG TERM EFFECTSMANY BODY PROBLEMmMECHANlCS (PHYSICS)ORBITAL MECHANICSORBITAL RESONANCES (CELESTIALMECHANICS)ORBITSPERTURBATION THEORYPLANETSROCHE LIMITSCHACH EFFECTSOLAR SYSTEMSTARSSTELLAR ORBITSSUNTERRESTRIAL PLANETSTHREE BODY PROBLEMTRAJECTORY ANALYSISTROJAN ORBITSTWO BODY PROBLEMWOLF-RAYET STARS

CELESTIAL OB@RVATlONUSE ASTRONOMYCELESTIAL REFERENCE SYSTEMSRT AIR NAVIGA TIONASTRONOMICAL COORDINATESASTRONOMICAL MAPSAZIMUTHCOORDINATES


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CHARGED PARTICLESCELESTIAL REFERENCE SYSTEMS-/CONT.) CEP~A-(WNT.). . CEPSTRART OUEFRENCIES

CHARGED PAR~CLES-(CONI). . . HEAW NUCLEIEOCENTRIC COORDINATESINERTIAL REFERENCE SYSTEMS . . . HYPERNUCLEI. . . . ODD-EVEN NUCLEI. . . . ODPODD NUCLEIIN~%RP~ANETARYAVIGATIONINTERSTELLAR TRAVELPLANETOCENTRIC COORDINATES CEPS RAL ANALYSISGS DATA PROCESSING. SIGNAL ANALYSIS . . . PLASMAS (PHYSICS). . . . ARGON PLASMAREFERENCE SYSTEMSSOLAR LONGITUDESPHERICAL COORDINATES.SYSTEMS

. . . . BETA PARTICLES. . . . BOUNDARY LAYER PLASMAS. . . . COLD PLASMAS. . . . COLLISIONAL PLASMAS. . . . . STRONGLY COUPLED PLASMAS. . . . COLLISIONLESS PLASMAS. . C E r n A L A NALYSIS. VOICE DATA PROCESSING. .CEPS1RM . AHALYSISSPECTRUM ANALYSIS. CEPSIRU ANALYSISRT ACOUSTIC MEASUREMENTAUDIO FRMUENCIESCeLE SnAL SPHEREGS SYMMETRICAL BODIES. BOMES OF REVOLUTION . . . . COSMIC PLASMA. . . . CYLINDRICAL PLASMAS-- -ECnOESMULTIPATH TRANSM ISSIONPOWER SPECTRA. . SPHERES. . . CELESTIAL SPHERERT ARIES CONSTE LLATIONASTRONOMICAL MAPSCASSlOPElA CONSTELLATION

. . . . DENSE PLASMAS. . . . . PLASMA FOCUS. . . . . STRONGLY COUPLED PLASMAS. . . . ELECTRON PLASMA. . . . ELLIPTICAL PLASMASSIGNAL REFLECTIONSIGNATURE ANALYSISSPECTRALSIGNATURESSPEECH RECOGNITIONTIME LAGVIBRATION MEASUREMENTCENTAURUS CONSTELLATIONCONSTELLATIONSCORONA BOREALIS CONSTELLATIONCYGNUS CONSTELLATIONHORIZON

. . . . HELIUM PLASMA. . . . HlGH TEMPERATURE PLASMAS. . HYDROGEN PLASMA. . . . . DEUTERIUM PLASMA. . . . LASER PLASMAS. . . . METALLIC PLASMAS. . . . . CESIUM PLASMA. . . . MICROPLASMAS. . . . NITROGEN PLASMA. . . . NONEQUlLlBRlUM PLASMAS. . . . NONUNIFORM PLASMAS

CERENKOV COUNTERSGS MEASURING INSTRUMENTSLYRA CONSTELLATIONORBITAL POSITION ESTIMATIONPLANISPHERES . COUNTERS. . RADIATION COUNTERS. . . CERENKOV COUNTERS. RADIATION MEASURING INSTRUMENTS. . RADIATION COUNTERSENTAUR LAUNCH VEHICLEUF CENTAUR VEHICLE

GS LAUNCH VEHICLES. CENTAUR LAUNCH VEHICLE. . ATLAS CENTAUR LAUNCH VEHICLEROCKET VEHIWS. CENTA UR LAUNCH W W L E. . ATLAS CENTAUR LAUN CH VEHICLE

. . . . OXYGEN PLASMA

. . . . RAREFlED PLASMAS. . . . RELATIVISTIC PLASMAS. . . . ROTATING PLASMAS. . . . SEMICONDUCTOR PLASMAS. . . CERENKOV COUNTERSRT SCINTILLATION COUNTERS

CERENKOV EFFECTUSE CERENKOV RADIATION . . . . SPACE PLASMAS. . . . . SOLAR WIND. . . . . STELLAR WINDS. . . .'SPHERICAL PLASMAS. . . . THERMAL PLASMAS. . . . TOROIDAL PLASMAS. . IONIZED GASES. . . LORENYZ GAS. . MAGNETICALLY TRAPPED PARTICLES. . . RADIATION BELTS. . . . ARTIF~CIAL RADIATION BELTS

RT ATLAS D ICBMLIQUID PROPELLANT ROCKET ENGINESSATURN PROJECTCERENKOV RAW ATIONUF CERENKOV EFFECTGS ELECTROMAGNETIC RADIATION. CERENKOV RADIATIONITAN CENTAUR LAUNCH VEHICLE RT BREMSSTRAHLUNGCORPUSCULAR R ADIATIONCOSMIC RAYS

m EFFECTSGAMMA RAY BURSTSCENTAUR PROJECTGS PROGRAMS. NASA PROGRAMS. . NASA SPACE PROGRAMS. . . CENTAUR PROJECT. PROJECTS GAMMA RAYSLIGHT (VISIBLE RADIATION)NUCLEAR RADIATION

. . . INNER RADIATION BELT. . . . OUTER RADIATION BELT. . . . PROTON BELTS. CENTAUR PROJECT. SPACE PROGRAMS. . NASA SPACE PROGRAMS. . . CENTAUR PROJECTAT ATLAS CENTAUR LAUNC H VEHICLEmRADIATIONULTRAVIOLET RADIATION . . PARTONS. . PLASMA CLOUDS. . . MAGNETIC CLOUDS. . PLASMA JETS

. . . RADIO JETS (ASTRONOMY). . PLASMA LAYERS. . . PLASMA SHEATHS. . PLASMA SLABS. . POSITRONS. . PROTONS. . . RECOIL PROTONS. . . SOLAR PROTONSRT ANTINEUTRINOSANTIPARTICLESBOSONSCHARGE TRANSFERCORPUSCULAR RADIATIONCOULOMB COLLISIONSCOULOMB POTENTIALCYCLOTRON FREQUENCYCYCLOTRON RADIATION

CERES ASTEROIDGS CELESTIAL BODIES. ASTEROID BELTS. . ASTEROIDS. . . CERES ASTEROID

LAUNCH VEHICLESMARINER PROGRAMRL-10 ENGINESSURVClOR PROJECTCENTAUR VEHICLEUSE CENTAUR LAUNCH VEHICLE CHANNEL MULTIPLIERSUF CHANNELTRONSGS MULTIPLIERS. CHANNEL MULTIPLIERSRT AURORAL SPECTROSCOPYELECTRON AVALANCHEMICROCHANNEL PLATESCENTAURUS CONSTEU ATIONGS CONSTELLATIONS. CENTAURUS CONSTELLATIONRT CELESTIAL BODIESCELESTIAL SPHERE PHOTOMULTIPLIER TUBESRADIATION COUNTERSTARSCENTIMETER WAVESGS ELECTROMAGNETIC RADIATIONRADIO WAVES. . SHORT WAVE RADIATION. . . MICROWAVES. . . . CENTIMETER WAVES

CHANNELTRONSUSE CHANNEL MULTIPLIERS CYCLOTRON RESONANCEDEUTERON IRRADIATIONELEMENTARY PARTICLESHAPMAN-FERRARO PROBLEMRT ATMOSPHERIC MODEL SEARTH MAGNETOSPHEREINTERPLANETARY MAGNETIC FIELDSMAGNETOPAUSE

r PROBLEMSSOLAR WIND

ETA-MESONSGYROFRMUENCYHELlOS PROJECTT COSMIC NOISEEXTRATERRESTRIAL RADIO WAVESMICROWAVE FREQUENCIES HYPERONSION CHARGESUPERHIGH FREQUENCIES KAONSLEPTONSLORENTZ FORCEEPHEID VARIABLESGS CELESTIAL BODIESSTARS. . VARIABLE STARS. . . CEPHEID VARIABLESRT CEPHEUS CONSTE LLATION

CHARGED PARTICLESSN (FOR IONIC PARTICLES SEE IONS) MESON-NUCLEON INTERACTIONSMESONSMUON SPIN ROTATIONMUONSNEUTRAL SHEETSGS PARTICLESCHARGED PARTICLES. . ANTIPROTONS. . ENERGETIC PARTICLES. . . ELECTRONS' NEUTRONSNONADIABATIC THEORY

x NUCLEICEPHEUS CONSTELLATIONGS CONSTELLATIONSCEPHEUS CONSTELLATIONRT CEPHEID VARIABLES. . . . CONDUCTION ELECTRONS. . . . HlGH ENERGY ELECTRONS. . . . HOT ELECTRONS NUCLEON-NUCLEON INTERACTIONSNUCLEONSOMEGA-MESONSPARTICLE CHARGINGPARTICLE PRECIPITATIONPARTICLE TRAJECTORIES

. . . . N ELECTRONS. . . . NEGATRONS. . . . PI-ELECTRONS

. . . NUCLEI (NUCLEAR PHYSICS). . . . WEN-EVEN NUCLEICEPSTRAGS SPECTRAPOWER SPECTRA


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CHARONCMW P ~ L E S - ( W N Z )PIONSREISSNER-NORDSTROM SOLUTIONRHO-MESONSSIGMA-MESONSSINGLE EVENT UPSETSTRAPPED PARTICLESCHAROMGS CELESTIAL BODIES. NATURAL SATELUTES

DEIMOSEARTH-MOON SYSTEMEUROPAGALILEAN SATELLITESGANYMEMIAPETUS10PLANETARY ORBITSPLUTO (PLANET)SOLAR SYSTEMTITANCHEMICAL COMPOSmONGS COMPOSITION (PR OP ER M. CHEMICAL COUPaS mON. . CARBON DIOXIDE CONCENTRATION. . STELLAR COMPOSITIONRT ALKALINITYATMOSPHERIC COMPOSITIONATOM CONCENTRATIONBODY COMPOSITION (BIOLOGY)DISTRIBUTION (PROPERMGAS COMPOSITIONIONOSPHERIC COMPOSITIONUGANDSMETALLIC STARSMETALLlClTYP~ANETARYTRUCTURESPECTRAL SIGNATURESCHEMICAL EVOLUTIONGS EVOLUTION (DEVELOPMENT). CHEMICAL EVOLUTIONRT ABlOGENESlSBIOLOGICAL EVOLUTION

m EVOLUTIONEXOBIOLOGYLIFE SCIENCESORGANIC COMPOUNDSPROTEIN SYNTHESISCHEYBSPHEREGS EARTH ATMOSPHERE

. CHEMOSPHERERT BIOSPHEREEARTH IONOSPHEREHETEROSPHEREHOMOSPHERELOWER ATMOSPHEREMESOSPHEREMIDDLE ATMOSPHEREOZONOSPHEREPLASMASPHERESTRATOSPHERETHERMOSPHERETROPOSPHEREUPPER ATMOSPHERECHINESE SPACE PROGRAMGS PROGRAMS. SPACE PROGRAMS. . CHINESE SPACE PROGRAMRT CHINA-RESEARCH PROJECTSSPACE MISSIONSTAIWANCHIRONUF MINOR PLANET 2060GS CELESTIAL BODIES. ASTEROID BELTS. . ASTEROIDS. . . CHIRONRT APOLLO ASTEROIDSMETEOROIDSPLANETSSOLAR SYSTEMSPACE DEBRISCHONDRITESGS CELESTIAL BODIES. METEORITES

wmmms4WNZ). .STONY METEORITES. . . CHONDRmS. . . . BRUDERHEIM METEORITE. . . . CARBONACEOUS CHONDRITES. . . . . ALLENDE METEORITE-- --. . . . . MURCHISON METEORITE. . . . CARBONACEOUS METEORITES. . . . . ALAS METEORITE. . . . . COLD BOKKEVELD METEORITE. . . . IVUNA METEOR m. . . . . MURRAY METEORITE. . . . . ORGUEIL MElEORm. . . . . TONK wrumm. . . . m s m X l m m. . . . PANTAR CHONDRlTES. . . . PRIERAM METEORITERT ACHONDRITESCHONDRULETEKTITESCHONDRUUERT CHONDRITESENSTATITEMETEORITESMETEORITIC MICROSTRUCTURESMINERALCGYCHROYBSPHEREGS ENVIRONMENTS. EXTRATERRESTRIAL ENVIRONMENTS

. . STELLAR ATMOSPHERES. . . CHROMOSPHERERT CORONAL LOOPSFACULAEPHOTOSPHERESOLAR ATMOSPHERESOLAR CORONASOLAR PROMINENCESSPICULESSTELLAR STRUCTURESTELLAR WINDS

-CINDER CONESUSE CONES (VOLCANOES)CIRCULAR ORBITSGS ORBITS. CIRCULAR ORBITS. . STATIONARY ORBITSRT EARTH ORBITSECCENTRIC ORBITSELLIPTICAL ORBITSEQUATORIAL ORBITSGEOSYNCHRONOUS ORBITSLUNAR ORBITSORBKAL MECHANICSPLANETARY ORBITSPOLAR ORBITSQUADRATURESSATELLITE ORBITSSOLAR ORBITSSPACECRAFT ORBITSTWENTY-FOUR HOUR ORBITSCIRCUMLUNAR TRAJECTORIESGS TRAJECTORIES. ROUND TRIP TRAJECTORIES. . CIRCUMLUNAR TRAJECTORIES. SPACECRAFT TRAJECTORIES. . LUNAR TRAJECTORIES. . . CIRCUMLUNAR TRAJECTORIESRT EARTH ORBITSEARTH-MOON TRAJECTORIESLUNAR FLIGHTLUNAR ORBITSMOOKEARTH TRAJECTORIESREENTRY TRAJECTORIESRENDEZVOUS TRAJECTORIESTRANSFER ORBITSCIRCUMSOLAR RADIATIONGS EXTRATERRESTRIAL RADIATIONSOLAR RADIATION. . CIRCUMSOLAR RADIATIONRT ATMOSPHERIC SCATTERINGLIGHT SCATTERINGmRADlATlONSCAlTERING .SUNLIGHTCIRCUMSOLAR TELESCOPESGS TELESCOPESCIRCUMSOLAR TELESCOPESRT LENSES

C tR cu nrso Ln R I E U E X W S - ( ~ N ~ )MEASURING INSTRUMENTSMIRRORSOPflCAL EQUIPMENTRADIATION PYROMETERSSOLAR ENERGYSOLAR RADIATIONCIRCUMSTEUAR MATTER

USE STELLAR ENVELOPESCtSLUNAR SPACEGS ENVIRONMENTS. AEROSPACE ENVIRONMENTS. . CISLUNAR SPACE. EXTRATERRESTRIAL ENVIRONMENTS. . CISLUNAR SPACERT DEEP SPACEEARTH-MOON TRAJECTORIESINTERPLANETARY SPACELUNAR FLIGHTLUNAR ORBITS

r SPACEm CLOUDSSN (USE OF A MORE SPECIFIC TERM ISRECOMMENDEPCONSULT THE TERMSLISTED BELOWRT CLOUDS (METEOROLOGY)

WSTELECTRON CLOUDSEXHAUST CLOUDSH I REGIONSH II REGIONSHYDROGEN CLOUDSMAGELLANIC CLOUDSMAGNETIC CLOUDSMETEOROID DUST CLOUDSMOLECULAR CLOUDSOORT CLOUDOPHlUCHl CLOUDSPARTICLESPLASMA CLOUDSVENUS CLOUDS

CLUMPSRT AGGLOMERATION-CLUSTERSPATTERN RECOGNITIONREGRESSION ANALYSISce CLUSTERSSN (USE OF A MORE SPECIFIC TERM ISRECOMMENDED-CONSULT THE TERMSLISTED BELOW.RT CLUMPSGALACTIC CLUSTERSGLOBULAR CLUSTERSPLEIADES CLUSTERPRAESEPE STAR CLUSTERSSTAR CLUSTERSVIRGO GALACTIC CLUSTER

CN EMISSION-UF- CYANIDE EMISSIONGS ELECTROMAGNETIC RADIATIONRADIO WAVESRADIO EMISSIONCN EMISSIONEMISSIONRADIO EMISSIONCN EMISSIONRT HYDROCYANIC ACIDMILLIMETER WAVESRADIO SOURCES (ASTRONOMY)

COBEUSE COSMIC BACKGROUND EXPLORERSATELLITECOESITEGS CHALCOGENIDESOXIDES. . DIOXIDES

. . . SILICON DIOXIDE. . . . QUARTZ. . COESITESILICON OXIDES. SILICON DIOXIDE

. . . - .-. . . . COESITEMINERALS. QUARTZ. . COESITESILICON COMPOUNDS


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COMPANION STARSCOES~-(CONT). SILICON OXIDES. . SILICON DIOXIDE. . . QUARTZ. . . . C O E S mRT EARTH CRUST

COHERENT RIMATION-(CONT)m RAYSWAVE PROPAGATIONCOHERENTSOURCESUSE COHERENT RADIATIONRADIATION SOURCESARTH MANTLEMETEORITESRUTILE COHERENT TRANSM IWONUSE COHERENT RADIATION

COHERENT ANTI-STOKES RAMANSPecTROSmPYUSE RAMAN SPECTROSCOPYCOHERENT ELECTROMAGNETIC RI MA TIO NGS COHERENT RADIATION. COHERENT ELECTROMAGNETICRAMATlON. . COHERENT LlGHTELECTROMAGNETIC RADIATION. COHERENT ELECTROMAGNETICRADIATION. . COHERENT LIGHTRT BEAMS (RADIATIONIHOLOGRAPHYINFRARED RADIATIONINTERSTELLAR MASERSIONIZING R ADIATIONKRYPTON FLUORIDE LASERSUS E RSLlGHT (VISIBLE RAD IATION)MASERSMODULATED CONTINUOUS R ADIATIONMONOCHROMATIC RADIATIONmRADIATIONRADIO WAVESSQUEEZED STATES (QUANTUM THEORW

STIMULATED EMISSIONSTIMULATED EMISSION DEVICESTRAVELING WAVE MASERSULTRAVIOLET R ADIATIONCOHERENT LIGHTGS COHERENT RADIATION. COHERENT ELECTROMAGNETICRADIATION. . COHERENT UGHTELECTROMAGNETIC RADIATION. COHERENT ELECTROMAGNETICRADIATION. . COHERENT uaw. LlGHT (VISIBLE RADlATtON). . COHERENT UGHTRT GAMMA RAY LASERSHCN LASERSHOLOGRAPHIC INTERFEROMETRYHOLOGRAPHYLASER OUTPUTSLASERSMONOCHROMATIC RADIATIONNEODYMIUM LASERSOPTICAL COMPUTERSOPTICAL MEMORY (DATA STORAGE)PHASE COHERENCEPLASMADYNAMIC LASERSRARE GASHALIDE LASERSSCA'TTER PLATES (OPTICS)SHlVA LASER SYSTEM

COLD BOKKEVeLD METEORITEGS CELESTIAL BODIES. METEORITES. . STONY METEORITES. . . CHONORITES. . . . CARBONACEOUS M!ZEOR lTES. . . . . COLD BOKKEVELD METEORITECOLLECTORSUSE ACCUMULATORSCOLLISION PARAMETERSGS RATES (PER TIME). COLUSQN PARAMETERS. .COLUSION RATESRT mABSORPTNINBEAM INTERACTIONS-CROSS SECTIONSMEAN FREE PATHNUCLEAR INTERACTIONS

PARTICLE INTERACTIONSPARTICLE THEORYSCATTERINGCOLLlSKmsGS COU1SlONS. ATOMIC COLLISIONS. COULOMB COUtSlONS. NELASTIC CO LLISIONS. IONIC COLLISIONS. METEORITE CO LLISIONS. MIDAIR COLLISIONS. . BIRD-AIRCRAFT COLLISIONS. MOLECULAR COLLISIONS. PARTICLE COLUSIONSRT AIR BAG RESTR AINT DEVICESAIR TRAF flC CONTROLAIRCRAFT ACCIDENTSAIRCRAFT HAZARDSAIRCRAFT SA FE NCOLLISION AVOIDANCECRASHESFLIGHT HAZARDSFLIGHT PATHSGAS ATOMIZATIONPILOT ERRORRECOlLlNGSSCA'TTERINGCOLORCOLOR DIAGRAMGS DIAGRAMS. COLORCOLOR DIAGRAMRT COLOR-MAGNITUDE DIAGRAMHERTZSPRUNG-RUSSELL DIAGRAMSTELLAR COLORSTELLAR SPECTRASTELLAR SPECTROPHOTOMETRYUBV SPECTRA

SPECKLE HOLOGRAPHY COLOR-MAGNITUDE DIAGRAMSQUEEZED STATES (QUANTU M THEORY) UF C-M DIAGRAMSTlMULATED EMISSION GS DIAGRAMSTWO-WAVELENGTH LASERS . COLOR-MAGNITUDE DIAGRAMULTRAVIOLET LASERS RT ASYMPTOTIC GIANT BRANC H STARSCOHERENT RADIANONUF COHERENT SOURCESCOHERENT TRANSMISSIONGS COHERENT RAD IATIONCOHERENT ACOUSTIC RADIATION. COHERENT ELECTROMAGNETICRADIATIONCOHERENT LlGHTRT BEAMS (RADIATION)zCOHERENCECOHERENCE COEFFICIENTCONTINUOUS RADIATIONCORPUSCULARRADIATIONEUSTIC WAVESELECTROMAGNETIC RADIATIONLlGHT (VISIBLE R ADIATION)OPTICAL PROPERTIES

7 j RADIATION

COLORCOLOR DIAGRAMGLOBULAR CLUSTERSHERTZSPRUNG-RUSSELL DIAGRAMHORIZONTAL BRANCH STARSMAIN SEQUENCE STARSSTAR CLUSTERSSTELLAR COLORSTELLAR EVOLUTIONSTELLAR MAGNITUDEm COMASN (USE OF A MORE SPECIFIC TERM ISRECOMMENDED--CONSUL T THE TERMSLISTED BELOW)RT ABERRATIONBLACKOUT (PHYSIOLOGY)BLACKOUT PREVENTIONCOMET HEADSCOMET NUCLEI

COMA-(CONT)COMET TAILSCOMETARY ATMOSPHERESCOMETSGRIGG-SKJELLERUP COMETKOHOUTEK COMETSCREEN EFFECTTEMPEL 2 COMETUNCONSCIOUSNESSCOMET HEADSGS CELESTIAL BODIES. COMETS. .COMET HEADSRT -COMACOMETARY ATMOSPHERESSOLAR SYSTEMCOMET NUCLEIGS CELESTIAL BODIES. COMETS. . COMET NUCLEIRT -COMACOMETARY ATMOSPHERESOORT CLOUDSOLAR SYSTEMCOMET TAILSGS CELESTIAL BODIES. COMETS. . COMET TAILSRT mCOMA

COMETARY ATMOSPHERESGRIGG-SKJELLERUP COMETRADIATION PRESSURESOLAR SYSTEMSOLAR WINDCOMETARY ATMOSPHERESRT ASTRONOMICAL PHOTOMETRY

mCOMACOMET HEADSCOMET NUCLEICOMET TAILSCOMETSIONOPAUSECOMETSGS CELESTIAL BODIES. COMETS. . AREND-ROLAND COMET. . COMET HEADS. . COMET NUCLEI. . COMET TAILS. . ENCKE COMET. . GIACOBINI-ZINNER COMET. . GRIGG-SKJELLERUP COMET. . HALLN'S COMET. . HUMASON COMET. . IRASARAKI-ALCOCK COMET. . KOHOUTEK COM ET. . MOREHOUSE COMET. . MRKOS COMET. . SCHWASSMANN-WACHMANN COMET. . TEMPEL 2 COMET. . WEST COMETRT BESSEL-BREDICHIN THEORY=COMACOMETARY ATMOSPHERESMETEOROID SHOWERSMETEOROIDSOORT CLOUDSOLAR SYSTEMCOMMlTlEE ON SPACE RESEARCHUF COSPAR (COMMITTEE )RT mAEROSPACE SCIENCESCONFERENCESEUROPEAN SPACE PROGRAMSINTERNATIONAL COOPERATIONNASA PROGRAMSPROGRAMSCOMPANION STARSGS CELESTIAL BODIES. STARS. . DOUBLE STARS. . . BINARY STARS. . . COMPANION STARS. . . . . NEMESIS (STAR)RT PARALLAXSTELLAR MOTIONSVARIABLE STARSVISUAL OBSERVATIONX RAY BINARIES


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COMPUTATIONAL ASTROPHYSICSCOMPUTATIONAL ASTROPHYSICSGS ASTROPHYSICS. COMPUTATIONAL ASTROPHYSICSRT COMPUTATION

COROTATlONGS GYRATION. ROTATION. . . boL STARS. . . . CARBON STARS. . . FLARE STARS . .COROTATlONRT ASTRONOM ICAL MODELSEARTH MAGNETOSPHERECOMPUTERIZED SIMULATIONMATHEMATICAL MODELS-SCIENCE

. . . . K STARS. . . . M STARS. . . . . VAN BIESBROECK STAR. . . . MlRA VARIABLES. . . . . OMICRON CETl STAR. . . . S STARSRT Gl A M S TA RSR CORONAE BOREALIS STARS

STrLLAR ATMOSPHERESSTELLAR ENVELOPESSTrLLAR SPECTRASTEUAA TEMPERATURE

GALACTIC ROTATIONGALACTIC STRUCTURESPIRAL GALAXIESSTELLAR MOTIONSSTEUAR ROTATION

CONES WOLeANOEs)UF CINDER CONESGS GEOLOGY. CONES (VmcANoEs1LANDFORMS. CONES (VOLCANOES)RT BASALTCORPUSCUUR RADIATIONSN (LIMITED TO NONELECTRO MAGNETICRADIATION CONSISTING OF ENERGETICCHARGED OR NEUTRAL PARTICLES)UF PENETRATING PARTICLESGS PARTICLES. CORPUSCULAR RADIATION. . ELECTRON PRECIPITATION. . ELECTRON RADIATION. . . BETA PARTICLES. . . ELECTRON BEAMS. . . . RELATIVISTIC ELECTRON BEAMS. . PRIMARY COSMIC RAYS. . . SOLAR COSMIC RAYS. . RADIATION BELTS. . SOLAR CORPUSCULAR RADIATION. . . SOLAR ELECTRONS. . . SOLAR NEUTRONS. . . SOLAR PROTONSRT ALPHA PARTICLESATMOSPHERIC RADIATIONBACKGROUND RADIATION

CALOERASCRATERS COOLING FLOWS (AsmoP HYsl cs)GS FLUID FLOWEFFUSIVESGEOMORPHOLOGYLAVA . GAS FLOW. . C W U N G FLOWS (ASTROPHYSICS)RT ACCRETION DISKSMARS VOLCANOESMOUNTAINSOROGRAPHYPALEOMAGNETISMPETROLOGYROUSE BELTSVOLCANOESVOLCANOLOGY

COOLINGCOSMIC GASESDARK MATTERGALACTIC CLUSTERSGALACTIC EVOLUTIONINTERGALACTIC MEDIAINTERSTELLAR GASSTAR FORMATIONX RAY SOURCESCONSTEUATlONSGS CONSTELLATIONS. ANDROMEDA CONSTELLATION. ARIES CONSTELLATION. AURIGA CONSTELLATION. CASSlOPElA CONSTELLATION. CENTAURUS CONSTELLATION. CEPHEUS CONSTELLATION. CORONA BOREALIS CONSTELLATION. CYGNUS CONSTELLATION. LYRA CONSTELLATION. ORION CONSTELLATION. SAGllTARlUS CONSTELLATION

CQPERNICW SPACECRIFIUSE OAO 3 BEAMS (RADIATION)CERENKOV RADIATIONC r n K K I S EFFECTRT DISORIENTATION-EFFECTSMETEOROLOGYCHARGED PARTICLESCOHERENT RAOIAT~ONCONTINUOUS RADIATIONCOSMIC RAYSELECTROMAGNETIC RADIATIONEXTRATERRESTRIAL RADIATION

PLANETARY WAVESROTATING ENVIRONMENTSROTATIONSCORPIUS CONSTELLATIONSC UN M CONSTELLATION FLUX (RATE)GALACTIC RADIATIONINCIDENT RADIATIONINTERSTELLAR RADIATIONIONIZING RADIATIONIONSMESONSNEUTRONSNUCLEAR PARTICLESNUCLEAR RADIATIONNUCLEI (NUCLEAR PHYSICS)PARTICLE PRODUCTIONPHONON BEAMSPULSED RADIATIONmRADIATIONRADIATION DISTRIBUTIONRADIATION PRESSURERADIATION SOURCES*RAYS

VESTIBULAR TESTS. TAURUS CONSTELLATIONRT CELESTIAL SPHEREPLANISPHERESSTARSZODIACCORONA BOREAUS CONSTELLATIONGS CONSTELLATIONS. CORONA BOREAUS CONSTELLATIONRT CELESTIAL BODIESCELESTIAL SPHERESTARSONgTRUCTlON IN SPACEUSE ORBITAL ASSEMBLYCORONAGRAPHS

RT ASTRONOM ICAL PHOTOGRAPHYSOLAR OBSERVATORIESSPECTROHELIOGRAPHSSTARSAT TELESCOPETELESCOPES

CONTINlJoUS SPECTRAGS SPECTRA. CONTIMUOUS SPECTRART ASTRONOMICAL SPECTROSCOPYSOLAR SPECTRASPECTRAL EMISSIONSTELLAR SPECTRA CORONAL HOLESGS CORONAS REFLECTED WAVESREFRACTED WAVESONVECTIONGS CONVECTION. FORCED CONVECTION. STELLAR CORONAS. . SOLAR CORONA. . . CORONAL HOLESRT DECAMETRIC WAVESmHOLESRADIO ASTRONOMYSOLAR RADIO EMISSIONSOLAR WIND

SOLAR RADIATIONSOLAR TERRESTRIAL INTERACTIONSSTRATOSPHERE RADIATIONREE CONVECTION. RAYLEIGH-BENARD CONVECTION. . BENARD CELLS. MARANGONI CONVECTIONRT ADVECTIONBASE HEATINGBOUSSINESQ APPRO XIMATIONmCONDUCTIONFLUID DYNAMICSGRASHOF NLdBERHEAT TRANSMISSION

HEATINGMETEOROLOGYMIXING HEIGHTSTELLAR INTERIORSCONVECTION CURRENTSRT AIR CURRENTSBENARD CELLSELECTRON BUNCHING

COSMIC BACKGROUND EXPLORER SATELLITEUF COBEGS ARTIFICIAL SATELLITESSCIENTIFIC SATELLITES. EXPLORER SATELLITES. COSMIC BACKGRO UND EXPLORERSOLAR X-RAYSSTELLAR STRUCTUREULTRAVIOLET RADIATION

SATELLITERT BACKGROUN D RADIATIONRADIATION SPECTRA

CORONAL LOOPSGS CORONAS. STELLAR CORONAS. . SOLAR CORONA. . . CORONAL LOOPSRT CHROMOSPHERESOLAR FLARESSOLAR LIMB

SPACEBORNE ASTRONOMYCOSMlC DUSTGS PARTICLES. DUST. . COSMIC DUST. . . INTERPLANETARY DUST. . . . METEOROID DUST CLOUDSORONASGS CORONAS. ELECTRIC CORONA. STELLAR CORONAS. . SOLAR CORONA. . . CORONAL HOLES. . . CORONAL LOOPSRT ELECTRIC ARCSELECTRIC DISCHARGESHALOSIONIZATIONSOLAR SPECTRA

FLUID FLOWFREE CONVECTIONMIXING HEIGHT. . . . ZODIACAL DUSTAT INTERGALACTIC MEDIAINTERSTELLAR MATTERRAYLEIGH-BENARD CONVECTIONSOLAR GRANULATIONVERTICAL AIR CURRENTS

METEOROIDSMICROMETEORITESMICROMETEOROIDSMOLECULAR CLOUDSORGANIC SOLIDSREFLECTION NEBULAESPACE DEBRISTERRESTRIAL DUST BELT

COOL STARSGS CELESTIAL BODIES. STARS. . LATE STARS


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CYRlLLlD METEOROIDScosulc m - ( W N Z )VENUS FLY TRAP ROCKET VEHICLECOSUIC GAMMA RAY BURSTSUSE GAMMA RAY BURSTSCOSMIC OISESGS EXTRATERRESTRIAL MAlT ER. coswc QISES. . NTERPLANETARY GAS

. . NTVISTrUAR GAS. . . NEUTRAL GASESGASES. RAREFIED GASES. .COSUIC QISES. . . NTERPUNETARY GAS. . . NTERSELIAR GAS. . . . NEUTRAL GASESRT COOLING FLOWS (ASTROPHYSICS)DEGENERATE MAlTERELECTRON GASINTERGALACTIC MEDIAIONIZED GASESCOSMIC NOISEGS ELECTROMAGNETIC INTERFERENCE. RADIO FREQUENCY INTERFERENCE. . ELECTROMAGNETIC NOISE- -. . . COSMIC NOISERT ALOUETTE PROJECTBACKGROUND NOISEBACKGRWND RADIATION

CENTIMETER WAVESELECTROMAGNETIC NOISEMEASUREMENTGALACTIC RADIATIONGALACTIC RADIO WAVESINTERSTELLAR RADIATIONMICROWAVEEMISSIONMICROWAVESNOISE STORMSSOLAR RADIATIONSOLAR RADIO EMISSIONCOSMIC PLASMAGS EXTRATERRESTRIAL MATTER. COSMIC PLASMAPARTICLES. CHARGED PARTICLES. . ENERGETIC PARTICLES. . . PLASMAS (PHYSICS). . . . COSMICPL*SYART INTERGALACTIC MEDIAINTERPLANETARY GASPLASMA CLOUDSPLASMAPAUSERELATIVISTIC PLASMASSOLAR WINDSTELLAR WINDSSTRONGLY COUPLED PCASMASCOSMIC RADIATIONUSE COSMlC RAYSCOSMIC RADIO WAVESUSE EXTRATERRESTRIAL RADIO WAVESCOSMIC RAY ALBEDOGS ALBEDO. COSMIC RAY ALBEDORT ABSORPTANCE

rABSORPTIONATMOSPHERIC AlTENUATIONEARTH ALBEDOLUNAR ALBEDOPRIMARY COSMIC RAYSREFLECTANCESECONDARY COSMIC RAYS

COSMIC RAY SHOWERSUF MOLIERE FORMULAGS IONIZING RADIATIONCOSMIC RAYS. . COSMIC RAY SHOWERSRT ' AUGER EFFECT

mCASCADESELECTRON PHOTON CASCADESSECONDARY COSMIC RAYSzSHOWERSCOSMIC RAYSUF COSMIC RADIATIONGS IONIZING RADIATION. COSMIC RAYS

COSMIC RAYS-(WNT:). . COSMlC RAY SHOWERS. .GALACTIC COSMlC RAYS. .GAMMA RAY BURSTS. . PRIMARY COSMIC RAYS. . . SOLAR COSMIC RAYS. . SECONDARY COSMIC RAYSRT AEROSPACE ENVIRONMENTSALBEDOALPHA PARTICLESBIG BANG COSMOLOGYCERENKOV RADIATIOUCORPUSCULAR RADIATIONDEUTERONSELECTROMAGNETIC RADIATIONELECTRON ACCELERATIONELECTRONSEXTRATERRESTRIAL RADIATIONFORBUSH DECREASESGALACTIC RADIATIONGAMMA RAY TELESCOPESGAMMA RAYSHELIOSPHEREINTERSTELLAR RADIATIONION DENSITY (CONCENTRATION)MESONSNEUTRONSNUCLEAR PARTICLESNUCLEI (NUCLEAR PHYSICS)PARTICSRACKSPHOTONSPROTONS

=RADIATIONRADIATION BELTSRADIATIVE TRANSFERSINGLE EVENT UPSETSSOLAR RADIATIONSTELLAR RADIATIONVLF EMISSION RECORDERS

COSMlC X RAYSGS ELECTROMAGNETIC RADIATION. X RAYS. . COSMIC X RAYSIONIZING RADIATION. X RAYS. . COSMIC X RAYSRT EXTRATERRESTRIAL RADIATIONGALACTIC RADIATIONGAMMA RAY ASTRONOMYGAMMA RAY BURSTSGAMMA RAYSX RAY ASTRONOMYX RAY BINARIES

c o 5 I K ) c n E w m yRT COSMOLOGYEXTRATERRESTRIAL MAlTERGEOCHEMISTRYINTERSTELLAR CHEMISTRYMETEORITIC COMPOSITIONCOSMOGONYUSE COSMOLOGYCOSMOLOGYUF COSMOGONYGS COSMOLOGYBIG BANG COSMOLOGYHUBBLE DIAGRAM. MISSING MASS (ASTROPHYSICS)RT ASTRONOMICAL MODELSASTROPHYSICSCOSMOCHEMISTRY

DARK MATTEREXISTENCEGALACTIC EVOLUTIONGRAND UNIFIED THEORYGRAVlTlNOSHUBBLE CONSTANTLOCAL GROUP (ASTRONOMY)MASS DISTRIBUTIONNAKED SlNGULARlTlESPLANETARY EVO LUTIONPROTOPLANETSRED SHIFTSTAR DISTRIBUTIONSTAR FORMATIONSTELLAR EVOLUTIONSTELLAR MASS ACCRETIONSTRING THEORYSUPERGRAVITYSUPERSYMMETRYUNIVERSE

c o s u o ~ ~ ~ - ( ~ N Z jWHITE HOLES (ASTRONOMY)Do COS)IWJS

SN (USE OFA MORE SPECIFIC TERM ISRECOMMENOEPCONSULT THE TERMSLISTED BELOWRT COSMOS SATELLITESUNIVERSEUSE COMM IlTEE ON SPACE RESEARCH

CRAB NEBULAGS CELESTIAL BODIES. NEBULAE. . CRAB NEBULART ORION NEBULASUPERNOVAETAURUS CONSTELLATIONCRATERINGGS CRATERING. PROJECTILE CRATERINGRT CRATERSEJECTAIMPACT DAMAGEMARS CRATERSMETEORITE CRATERSMETEORITIC DAMAGENUCLEAR EXPLOSIONSCRATLIWUF MAARSMETEOR CRATERSGS CRATERS. LUNAR CRATERS. . PTOLEMAEUS CRATER. . TYCHO CRATERMETEORITE CRATERS. PLANETARY CRATERS. . MARS CRATERSRT CALDERASCONES (VOLCANOES)CRATERINGNECTAIMPACT DAMAGESATELLITE SURFACESCRITICAL FREQUENCIESGS FREQUENCIES. CRITICAL FREQUENCIESRT LIGHT (VISIBLE RADIATION)RESONANT FREQUENCIESCRUSTAL DYNAMICSUSE EARTH CRUSTGEODYNAMICSCRUSTSGS CRUSTS. LUNAR CRUST. PLANETARY CRUSTS. . EARTH CRUSTRT LUNAR MANTLEPLANETARY MANTLESCURVIUNEAR COORDINATESUSE SPHERICAL COORDINATESCYANIDE EMlSSlONUSE CN EMISSIONCYCLOTRON RADIATIONGS ELECTROMAGNETIC RADIATION

. NONTHERMAL RADIATION. . CYCLOTRON RADIATION. ION CYCLOTRON RADIATIONRT CHARGED PARTCLESLARMOR PRECESSIONLARMOR RADIUSzRADIATION

CYGNUS CONSTELLATIONGS CONSTELLATIONS. CYGNUS CONSTELLATIONRT GELESTIAL BODIESCELESTIAL SPHERESTARSCYRlLLlD METEOROIDSGS CELESTIAL BODIESMETEOROID SHOWERS. . CYRILUD METEOROIDS


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B LAYER

. . BOLIDES. . . CYMUD , w r n O R o l D sFIT NATURAL SATELLITES

D LAYERUSE D REGIOND LINESGS SPECTRA. RADIATION SPECTRA. . ELECTROMAGNETIC SPECTRA. . . LINE SPECTRA. . . . D LINESRT ABSORPTION SPECTRAEMISSION SPECTRAH LINESSOLAR SPECTRAD REGIONSN (ALTITUDE RANGE BETWEENAPPROXIMATELY 50 AND 90 KM)UF D LAYERGS EARTH ATMOSPHERE. UPPER ATMOSPHERE. . EARTH IONOSPHERE. . . LOWER IONOSPHERE. . . . D R E W NREGIONS. D REGION

DARK MATTERGS EXTRATERRESTRIAL MATTER. INTERSTELLAR MATTER. . DARK MARERMATTER (PHYSICS). D AR K M I T E RRT BARYONSCOOLING FLOWS (ASTROPHYSICS)COSMOLOGYGALACTIC EVOLUTIONINTERGALACTIC MEDIAMISSING MASS (ASTROPHYSICS)NEUTRINOSUNIVERSEDAYGLOWGS ATMOSPHERIC RADIATION. SKY RADIATION. . DAYGLOWELECTROMAGNETIC RADIATION. LIGHT (VISIBLE RADIATION). . SKY RADIATION. . . DAYGLOWRf GLARELIGHT SOURCESSKYSOLAR RADIATIONTWILIGHT GLOWULTRAVIOLET RADIATIONDEBRISGS DEBRIS. SPACE DEBRISRT EJECTAENVIRONMENT EFFECTS

FRAGMENTSGLACIAL DRIFTPOLLUTIONr RADIOACTIVE DEBRISSCRAPWASTES

DECAMETRIC WAVESGS ELECTROMAGNETIC RADIAT IONRADIO WAVES. DECAMETRIC WAVESRT CORONAL HOLESHlGH FREQUENCIESVERY HlGH FREQUENCIESDECIMETER WAVESGS ELECTROMAGNETIC RADIATION. RADIO WAVES. . SHORT WAVE RADIATION. . . MICROWAVES. . . . DECIMETER WAVES

DECIMETER WAVES-(CONT.)RT MILLIMETER WAVESPLANETARY RADIATIONSOLAR RADIO EMISSIONULTRAHIGH FREQUENCIESDEEP SPACEGS ENVIRONMENTS. AEROSPACE ENVIRONMENTS

. .BEeP SPACE. . . INTERPLANETARY SPACE. . . NTERSTELM SPACE. EXTRATERRESTRIAL ENVIRONMENTS. .W P PACE. . . INTERPLANETARY SPACE. . . INTERSTELLAR SPACERT CISLUNAR SPACEFRICTIONLESS ENVIRONMENTSLONG DURATION SPACE FLIGHT=SPACEDEGENERATE MA RE RGS MATTER (PHYSICS). DEGENERATE MATTERAT ANTIMATTERASTROPHYSICSBLACK HOLES (ASTRONOMY)COSMIC GASESCRITICAL PRESSUREDENSITY (MASSIVOLUMR

EF~ATERRESTRIALA ~ ~ E RFERMI-DIRAC STATISTICSHlGH PRESSURENAKED SlNGULARlTIESNEUTRON STARSNUCLEAR FUSIONm PHYSICSPULSARSROTATING MATTERSTELLAR CORESSTELLAR EVOLUTIONSTELLAR MASSSUPERMASSIVE STARSWHITE DWARF STARS

DEIMOSGS CELESTIAL BODIES. NATURAL SATELUTES. . MARS SATELLITES. . . DEIUOSRT CHARONMARS (PLANET)PHOBOS

DENSlTOMETERSGS MEASURING INSTRUMENTS. D E W O M E T E R S. . MICRODENSITOMETERSRT GAMMA RAY ABSORPTIOMETRYGRAVIMETERSOPTICAL EQUIPMENTOPTICAL MEASUREMENTOPTICAL MEASURING INSTRUMENTSPHOTOMETERSPHOTON ABSORPTIOMETRYTRANSMISSOMETERSDENSITY (NUMBERIVOLUME)GS DENSITY (NUMBERIVOLUME). METEOROID CONCENTRATION. PACKING PENSITY. PARTICLE OENSITY (CONCENTRATION). . ELECTRON DENSITY

(CONCENTRATION). . . CARRIER DENSITY (SOLID STATE). . . ELECTRON DENSITY PROFILES. . . IONOSPHERIC ELECTRON DENSITY. . . MAGNETOSPHERIC ELECTRONDENSITY. . ELECTRON DISTRIBUTION. . . ELECTRON DENSITY PROFILES. ION DENSITY (CONCENTRATION). . . IONOSPHERIC ION DENSITY. . . MAGNETOSPHERIC ION DENSITY. . . . MAGNETOSPHERIC PROTONDENSITY. . . PROTON DENSITY(CONCENTRATION). . . MAGNETOSPHERIC PROTONDENSITY. . PLASMA DENSITY. SPACE DENSITYRT ATMOSPHERIC DENS;!

m DENSITY

DENSITY (RATEIAREA)USE FLUX DENSITYDENSITY WAVE MODEL ,GS MODELS. ASTRONOMICAL MODELS. . DENSITY WAVE MODELAT GALACTIC STRUCTUREMASS DISTRIBUTION

SPIRAL GALAXIESWAVE EQUATIONSMSCENT TRAJECTORIESGS TRAJECTORIES. DESCENT TRAJECTORIES. . REENTRY TRAJECTORIESRT ASCENT TRAJECTORIESATMOSPHERIC ENTRYBALLISTIC TRAJECTORIESCOASTING FLIGHTFALLINGFLIGHT MECHANICSMANNED REENTRYMIDCOURSE TRAJECTORIES

MISSILE TRAJECTORIESPARABOLIC FLIGHTREENTRYREENTRY GUIDANCESPACECRAFT TRAJECTORIESTERMINAL GUIDANCEDEUTERONSGS IONS. DEUTERONSPARTICLES. ELEMENTARY PARTICLES. . DEUTERONSRT ALPHA PARTICLESCOSMIC RAYSDEUTERIUM PLASMAPHOTOMAGNETIC EFFECTSPLASMAS (PHYSICS)POMERANCHUK THEOREMPROTONSDIAL SATELLITEGS ARTIFICIAL SATELLITESSCIENTIFIC SATELLITES. . DIAL SATELUTERT AERONOMYASTRONOMICAL PHOTOMETRYEUROPEAN SPACE PROGRAMS

SATELLITE-BORNE INSTRUMENTSDICHOTOMIESGS CLASSIFICATIONS. HIERARCHIES. . DiCHOTOMlESN K E RADIOMETERSUF DlCKE TYPE RADIOMETERSGS MEASURING INSTRUMENTS. RADIATION MEASURING INSTRUME. . ACTINOMETERS. . . RADIOMETERS. . DICKE RADIOMETERSRT BOLOMETERSTHERMOPILESDlCKE TYPE RADIOMETERSUSE DlCKE RADIOMETERSDIFFRACTION TELESCOPESUSE SPECTROSCOPIC TELESCOPESDIFFUSE RADIATIONUF LUNAR SCATTERINGRT HEAT TRANSFERLIGHT SCATTERINGPOINT SOURCES

x RADIATIONSPECULAR REFLECTIONDlONEGS CELESTIAL BODIES. NATURAL SATELLITES. ICY SATELLITESDlONESATURN SATELLITESDIONERT SATURN (PLANET )DISCOVERINGUSE EXPLORATION


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EARLY APOLLO SURFACE EXPERIMENTS PACKAGEDlSK GALAXIESGS CELESTIAL BODIES. GALAXIESDlSK GALAXIESRT ANDROMEDAGALAXYASTROPHYSICSBARRED GAUX IESELLIPTICAL GALAXIESGALACTIC CLUSTERSGALACTIC EVOLUTlONGALACTIC NUCLEIGALACTIC ROTATIONGALACTIC STRUCTUREL&AL GROUP (ASTRONOMY)RADIO GALAXIESSPIRAL GALAXIESSTAR CLUSTERSVIRGO GALAC TIC CLUSTERDISTANCEGS DISTANCE. DEBYE LENGTH. DIFFUSION LENGTH. MISS DISTANCE. OPTICAL SLANT RANGE

, RADAR RANGE. RADIO RANGE. RANGE AND RANGE RATE TRACKING, REENTRY RANGERT AIRCRAFT PERFORMANCEAiRCRAFT SPECIFICATIONSALTITUDEDEPTHDIMENSIONSFOCUSINGGEOMETRYHEIGHTLENGTHPOSITION (LOCATION)PROXIMITYRADAR NAVIGATION

s ANGERANGE (EXTREMES)TAKEOFF RUNSaTRAVEL

a DISTURBANCESSN (USE OF A MORE SPECIFIC TERM ISRECOMMENDED-CONSULT THE TERMSLISTED BELOWRT BURSTSDISORDERSELECTROMAGNETIC INTERFERENC EIONOSPHERIC DISTURBANC ESIONOSPHERIC STORM SMAGNETIC DISTURBANCESPERTURBATIONRADIO AURORASRADIO BURSTSSOLAR ACTIVITYSTORMSSUDDEN IONOSPHERIC DISTURBANCESVORTICES

DIURNAL VARIATIONSGS VARIATIONSPERIODIC VARIATIONSDIURNAL VARIATIONSRT CYCLESDARKNESSDAYTIMEMAGNETIC VARIATIONSNIGHTNOCTURNAL VARIATIONSTROPOPAUSEWlND VARIATIONS

DOPPLER EFFECTUF WVAPSTELLAR DOPPLER SHlFTGS DOPPLER EFFECT. DOPPLER-FIZEAU EFFECTRT =EFFECTS-ELASTIC WAVESELECTROMAGNETIC RADIATIONFIZ

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