A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Descriptionaltbroadernarrowerrelated
DAMPING CONSTANTS      (DampingConstants)
LINE FORMATION ,
RADIATION DAMPING ,
RADIATIVE BRAKING
 
DANJON ASTROLABES      (DanjonAstrolabes)
ASTROLABES
 
DARK ADAPTION      (DarkAdaption)
retinal adaption COLOR VISION ,
DARKNESS ,
NIGHT VISION ,
VISION
 
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Descriptionaltbroadernarrowerrelated
DARK CLOUDS      (DarkClouds)
INTERSTELLAR MATTER C II REGIONS
 
DARK MATTER      (DarkMatter)
INTERGALACTIC MATTER ,
INTERSTELLAR MATTER 		COLD DARK MATTER COSMOLOGY ,
ELEMENTARY PARTICLES
 
DARK NEBULAE      (DarkNebulae)
absorption nebulae INTERSTELLAR MATTER ,
NEBULAE 		BOK GLOBULES GLOBULES ,
STAR FORMATION ,
WOLF DIAGRAM
 
DARKNESS      (Darkness)
DARK ADAPTION ,
DIURNAL VARIATIONS ,
LIGHT ,
OPTICAL PROPERTIES
 
DARKROOMS      (Darkrooms)
PHOTOGRAPHIC PROCESSING ,
PHOTOGRAPHY
 
DATA ACQUISITION      (DataAcquisition)
COUNTERS ,
COUNTING ,
DATA ANALYSIS ,
DIGITAL RECORDERS ,
OBSERVATIONS ,
OBSERVING TECHNIQUES
 
DATA ANALYSIS      (DataAnalysis)
ANALYSES DATA ACQUISITION ,
DATA PROCESSING ,
DATA REDUCTION ,
DATA STORAGE ,
DETERMINATION
 
DATA BASES      (DataBases)
DATA CENTERS ,
DATA RETRIEVAL ,
DATA STORAGE
 
DATA CENTERS      (DataCenters)
COMPUTERS ,
DATA BASES ,
DATA PROCESSING ,
DATA REDUCTION ,
DATA RETRIEVAL ,
DATA STORAGE ,
ON LINE SYSTEMS
 
DATA PROCESSING      (DataProcessing)
DATA REDUCTION ,
MONTE CARLO TECHNIQUES ,
NUMERICAL ANALYSIS 		CLEAN METHODS ,
COMPUTER PROGRAMS ,
COMPUTERS ,
CROSS CORRELATION ,
DATA ANALYSIS ,
DATA CENTERS ,
DATA RETRIEVAL ,
DATA STORAGE ,
ERROR ANALYSIS ,
OBSERVING TECHNIQUES ,
ON LINE SYSTEMS ,
REDUCTION METHODS
 
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Descriptionaltbroadernarrowerrelated
DATA REDUCTION      (DataReduction)
DATA PROCESSING COMPUTERS ,
DATA ANALYSIS ,
DATA CENTERS ,
DATA RETRIEVAL ,
DATA STORAGE ,
ERROR ANALYSIS ,
FINE ANALYSES ,
REDUCTION METHODS
 
DATA RETRIEVAL      (DataRetrieval)
DATA BASES ,
DATA CENTERS ,
DATA PROCESSING ,
DATA REDUCTION ,
DATA STORAGE
 
DATA STORAGE      (DataStorage)
ANALOG RECORDERS ,
COMPUTERS ,
DATA ANALYSIS ,
DATA BASES ,
DATA CENTERS ,
DATA PROCESSING ,
DATA REDUCTION ,
DATA RETRIEVAL
 
DDO PHOTOMETRY      (DdoPhotometry)
MEDIUM BAND PHOTOMETRY ,
PHOTOMETRIC SYSTEMS
 
DECAY [OSCILLATIONS]      (DecayOscillations)
AMPLITUDES ,
OSCILLATIONS ,
RADIATION DAMPING
Of oscillations
 
DECAY [RADIOACTIVE]      (DecayRadioactive)
RADIOACTIVITY
In radioactivity.
 
DECELERATION      (Deceleration)
ACCELERATION ,
DECELERATION PARAMETER
 
DECELERATION PARAMETER      (DecelerationParameter)
COSMOLOGICAL DISTANCE SCALE ,
DECELERATION
 
DECLINATION      (Declination)
CELESTIAL EQUATOR ,
EQUATOR ,
EQUATORIAL COORDINATE SYSTEM ,
EQUATORIAL ZONES ,
RIGHT ASCENSION
 
DECONVOLUTION      (Deconvolution)
Combine with other terms
 
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Descriptionaltbroadernarrowerrelated
DEFECTS      (Defects)
Combine with other terms
 
DEFORMATION      (Deformation)
Combine with other terms
 
DEGENERATE DWARF STARS      (DegenerateDwarfStars)
DEGENERATE STARS WHITE DWARF STARS
 
DEGENERATE MATTER      (DegenerateMatter)
BLACK HOLES ,
DEGENERATE STARS
 
DEGENERATE STARS      (DegenerateStars)
DEGENERATE MATTER ,
SUBLUMINOUS STARS 		DEGENERATE DWARF STARS ,
NEUTRON STARS ,
PULSARS 		COLLAPSED STARS ,
MASS RADIUS RELATION
 
DELTA DELPHINI STARS      (DeltaDelphiniStars)
DELTA SCUTI STARS ,
PULSATING VARIABLE STARS
 
DELTA SCUTI STARS      (DeltaScutiStars)
ai velorum stars ,
ultra short period variable stars 		MULTIPERIODIC VARIABLE STARS ,
PULSATING VARIABLE STARS ,
SHORT PERIOD VARIABLE STARS 		DELTA DELPHINI STARS DWARF CEPHEIDS ,
HE+ IONIZATION ZONE ,
KAPPA MECHANISM ,
NONRADIAL PULSATIONS ,
RADIAL PULSATIONS
 
DENSE CLOUDS      (DenseClouds)
INTERSTELLAR MATTER ,
NEBULAE 		DENSE MATTER
 
DENSE MATTER      (DenseMatter)
INTERSTELLAR MATTER ,
NEBULAE 		DENSE CLOUDS
 
DENSITOMETERS      (Densitometers)
MEASURING INSTRUMENTS DENSITOMETRY ,
MICRODENSITOMETERS
 
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Descriptionaltbroadernarrowerrelated
DENSITOMETRY      (Densitometry)
DENSITOMETERS
 
DENSITY      (Density)
specific gravity ATMOSPHERIC DENSITY ,
ELECTRON DENSITY ,
GAS DENSITY ,
MASS DENSITY 		DENSITY BOUNDED ,
DENSITY DISTRIBUTION ,
DENSITY FLUCTUATIONS ,
DENSITY PERTURBATION ,
DENSITY VARIATIONS ,
DENSITY WAVE MODEL ,
RANKINE HUGONIOT RELATIONS
 
DENSITY BOUNDED      (DensityBounded)
DENSITY
 
DENSITY DISTRIBUTION      (DensityDistribution)
DENSITY
 
DENSITY FLUCTUATIONS      (DensityFluctuations)
DENSITY
 
DENSITY PERTURBATION      (DensityPerturbation)
DENSITY
 
DENSITY VARIATIONS      (DensityVariations)
DENSITY
 
DENSITY WAVE MODEL      (DensityWaveModel)
DENSITY
 
DESIGN      (Design)
ENGINEERING ,
RESEARCH
Combine with other terms
 
DE SITTER UNIVERSE      (DeSitterUniverse)
COSMOLOGY
 
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Descriptionaltbroadernarrowerrelated
DESTRUCTION      (Destruction)
Combine with other terms
 
DETACHED BINARY STARS      (DetachedBinaryStars)
BINARY STARS W URSAE MAJORIS STARS SEMIDETACHED BINARY STARS
 
DETECTION      (Detection)
SIGNAL DETECTION
Combine with other terms
 
DETECTOR ARRAYS      (DetectorArrays)
ARRAYS ARRAY PROCESSORS
 
DETECTORS      (Detectors)
INSTRUMENTATION DUST DETECTORS ,
INFRARED DETECTORS ,
MULTICHANNEL DETECTORS ,
PHOTOGRAPHIC EMULSIONS ,
PHOTOMULTIPLIER TUBES ,
RADIOMETERS ,
SYNCHRONOUS DETECTORS ,
TWO DIMENSIONAL DETECTORS ,
ULTRAVIOLET DETECTORS ,
X RAY DETECTORS 		CHARGE COUPLED DEVICES ,
CHARGE INJECTION DEVICES ,
CHARGE TRANSFER DEVICES ,
LIMITING MAGNITUDES ,
PIXEL ,
QUANTUM EFFICIENCY ,
RECEIVERS ,
REMOTE SENSING ,
SEMICONDUCTOR DEVICES ,
SENSITIVITY ,
SHOT NOISE ,
SIGNAL DETECTION ,
TELESCOPE INSTRUMENTATION
Only the broad classes are shown below. Specific types will be found under these, or from the Hierarchical List.
 
DETERMINATION      (Determination)
DATA ANALYSIS ,
MEASUREMENT ,
QUANTIZATION
 
DEUTERIUM      (Deuterium)
CHEMICAL ELEMENTS
Isotope of hydrogen.
 
D GALAXIES      (DGalaxies)
GALAXIES cD GALAXIES CLUSTERS OF GALAXIES ,
MASSIVE GALAXIES
 
DIAGRAMS      (Diagrams)
Combine with other terms
 
DIAMETERS      (Diameters)
DIMENSIONS ANGULAR DIAMETERS BAADE WESSELINK METHOD ,
OCCULTATIONS ,
SURFACE GRAVITY
Combine with other terms
 
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Descriptionaltbroadernarrowerrelated
DIAMOND RING EFFECT      (DiamondRingEffect)
BAILYS BEADS ,
SOLAR ECLIPSE ,
SUN
 
DICHROIC MIRRORS      (DichroicMirrors)
MIRRORS OPTICAL FILMS ,
OPTICAL FILTERS
 
DICKE RADIOMETERS      (DickeRadiometers)
 
DIFFERENTIAL EQUATIONS      (DifferentialEquations)
MATHEMATICAL ANALYSIS
 
DIFFERENTIAL ROTATION      (DifferentialRotation)
ROTATION GALAXIES ,
GLOBULAR STAR CLUSTERS ,
TIDAL DISRUPTION ,
TIDAL DISTORTION
 
DIFFRACTION      (Diffraction)
X RAY DIFFRACTION AIRY DISKS ,
DIFFRACTION PATTERNS ,
INTERFERENCE [WAVES] ,
RAYLEIGH CRITERION ,
SHADOW BANDS
 
DIFFRACTION GRATINGS      (DiffractionGratings)
gratings OPTICAL COMPONENTS ECHELLE GRATINGS ,
OBJECTIVE GRATINGS ,
REFLECTION GRATINGS ,
TRANSMISSION GRATINGS 		GRATING SPECTROGRAPHS ,
GRISMS ,
SPECTRA ,
SPECTROGRAPHS
 
DIFFRACTION PATTERNS      (DiffractionPatterns)
DIFFRACTION
 
DIFFUSE NEBULAE      (DiffuseNebulae)
NEBULAE
 
DIFFUSE RADIATION      (DiffuseRadiation)
Combine with other terms
 
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Descriptionaltbroadernarrowerrelated
DIFFUSION      (Diffusion)
Combine with other terms
 
DIGITAL IMAGES      (DigitalImages)
IMAGES
 
DIGITAL RECORDERS      (DigitalRecorders)
DATA ACQUISITION
 
DIMENSIONS      (Dimensions)
DIAMETERS
Combine with other terms
 
DIODE ARRAYS      (DiodeArrays)
ARRAYS ,
MULTICHANNEL DETECTORS 		RETICON ARRAYS
 
DIODES      (Diodes)
ELECTRONIC EQUIPMENT
 
DIOPTRIC SYSTEMS      (DioptricSystems)
LENSES ,
OPTICAL TELESCOPES
 
DIPOLE ANTENNAS      (DipoleAntennas)
ANTENNAS ,
DIRECTIONAL ANTENNAS 		DIPOLES
 
DIPOLES      (Dipoles)
HALF WAVE DIPOLES DIPOLE ANTENNAS ,
ELECTRIC CHARGE ,
ELECTRIC DIPOLES
 
DIRAC COSMOLOGY      (DiracCosmology)
COSMOLOGY
 
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Descriptionaltbroadernarrowerrelated
DIRECTIONAL ANTENNAS      (DirectionalAntennas)
DIPOLE ANTENNAS ,
MILLS CROSS ANTENNAS ,
PARABOLIC ANTENNAS ,
YAGI ANTENNAS
 
DIRTY SNOWBALL THEORY      (DirtySnowballTheory)
COMETS ,
NUCLEI [CELESTIAL OBJECTS]
 
DISCOLORATION      (Discoloration)
Combine with other terms
 
DISCOVERIES      (Discoveries)
RESEARCH ,
SPACE EXPLORATION
Combine with other terms
 
DISCRETE RADIO SOURCES      (DiscreteRadioSources)
RADIO SOURCES
 
DISH ANTENNAS      (DishAntennas)
RADIO TELESCOPES ANTENNAS ,
PARABOLIC REFLECTORS ,
RADAR TELESCOPES
 
DISINTEGRATION      (Disintegration)
Combine with other terms
 
DISK GALAXIES      (DiskGalaxies)
DISKS
 
DISK POPULATION      (DiskPopulation)
POPULATION II STARS DISKS ,
GALACTIC PLANE ,
STELLAR POPULATIONS
 
DISKS      (Disks)
ACCRETION DISKS ,
CIRCUMSTELLAR DISKS ,
GASEOUS DISKS ,
GRAVITATING DISKS 		DISK GALAXIES ,
DISK POPULATION ,
DISK STARS
 
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Descriptionaltbroadernarrowerrelated
DISK STARS      (DiskStars)
POPULATION II STARS DISKS ,
GALACTIC PLANE ,
GASEOUS DISKS
 
DISPERSION      (Dispersion)
Combine with other terms
 
DISRUPTION      (Disruption)
Combine with other terms
 
DISSIPATION      (Dissipation)
Combine with other terms
 
DISTANCE      (Distance)
ABSOLUTE MAGNITUDE ,
BODES LAW ,
DISTANCE INDICATORS ,
DISTANCE MEASUREMENT ,
DISTANCE MODULUS ,
DISTANCE SCALE ,
LIGHT YEAR ,
PARALLAXES ,
PARSEC ,
RANGE FINDERS ,
TRIGONOMETRIC PARALLAX
 
DISTANCE INDICATORS      (DistanceIndicators)
DISTANCE ,
DISTANCE MEASUREMENT ,
DISTANCE MODULUS ,
DISTANCE SCALE
 
DISTANCE MEASUREMENT      (DistanceMeasurement)
DISTANCE ,
DISTANCE INDICATORS ,
DISTANCE SCALE
 
DISTANCE MODULUS      (DistanceModulus)
modulus ABSOLUTE MAGNITUDE ,
DISTANCE ,
DISTANCE INDICATORS ,
DISTANCE SCALE ,
PARALLAXES
 
DISTANCE SCALE      (DistanceScale)
COSMOLOGICAL DISTANCE SCALE ASTRONOMICAL UNIT ,
DISTANCE ,
DISTANCE INDICATORS ,
DISTANCE MEASUREMENT ,
DISTANCE MODULUS ,
PARSEC
 
DISTORTION      (Distortion)
ABERRATIONS ASTIGMATISM ,
CHROMATIC ABERRATION ,
COMA ,
FIELD CURVATURE ,
OPTICAL SYSTEMS ,
SPHERICAL ABERRATION
 
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Descriptionaltbroadernarrowerrelated
DISTRIBUTION FUNCTION      (DistributionFunction)
FUNCTIONS DISTRIBUTION IN SPACE ,
FREQUENCY DISTRIBUTION ,
STATISTICS
In mathematics.
 
DISTRIBUTION IN SPACE      (DistributionInSpace)
DISTRIBUTION FUNCTION
Combine with other terms
 
DIURNAL PARALLAX      (DiurnalParallax)
PARALLAXES HORIZONTAL PARALLAX ZENITH DISTANCE
 
DIURNAL PHENOMENA      (DiurnalPhenomena)
DIURNAL VARIATIONS
 
DIURNAL VARIATIONS      (DiurnalVariations)
DARKNESS ,
DIURNAL PHENOMENA
 
D LAYER      (DLayer)
d region EARTH ATMOSPHERE ,
IONOSPHERE
 
D LINES      (DLines)
ABSORPTION SPECTRA
 
DOMES      (Domes)
telescope domes DOME SEEING ,
OBSERVATORIES ,
TELESCOPES ,
TEMPERATURE CONTROL ,
VENTILATION
Excluding LUNAR DOMES
 
DOME SEEING      (DomeSeeing)
SEEING DOMES ,
VENTILATION
 
DOPPLER BROADENING      (DopplerBroadening)
LINE BROADENING DOPPLER EFFECT ,
LINE WIDTHS ,
NATURAL LINE WIDTH ,
PRESSURE BROADENING ,
STARK BROADENING ,
ZEEMAN SPLITTING
 
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Descriptionaltbroadernarrowerrelated
DOPPLER EFFECT      (DopplerEffect)
BLUE SHIFT ,
REDSHIFT 		DOPPLER BROADENING ,
LINE SHIFT ,
RADAR ,
RADIAL VELOCITY ,
SPECTROSCOPIC ANALYSIS ,
SPECTROSCOPIC BINARY STARS ,
STELLAR MOTIONS
 
DOUBLE GALAXIES      (DoubleGalaxies)
binary galaxies ,
binary systems 		GALAXIES COMPANION GALAXIES ,
GALAXY MERGERS
 
DOUBLE MODE CEPHEIDS      (DoubleModeCepheids)
beat cepheids CEPHEIDS ,
DOUBLE MODE VARIABLE STARS ,
PULSATING VARIABLE STARS 		DOUBLE MODE PULSATION
 
DOUBLE MODE PULSATION      (DoubleModePulsation)
MULTIPERIODIC PULSATION DOUBLE MODE CEPHEIDS ,
DOUBLE MODE VARIABLE STARS ,
PULSATING VARIABLE STARS
 
DOUBLE MODE VARIABLE STARS      (DoubleModeVariableStars)
MULTIPERIODIC VARIABLE STARS ,
PULSATING VARIABLE STARS 		DOUBLE MODE CEPHEIDS ,
RR LYRAE STARS 		DOUBLE MODE PULSATION
 
DOUBLE QUASARS      (DoubleQuasars)
GRAVITATIONAL DEFLECTION ,
GRAVITATIONAL LENSES ,
QUASARS
 
DQ HERCULIS STARS      (DqHerculisStars)
ECLIPSING BINARY STARS ,
SLOW NOVAS
 
DREDGE UP      (DredgeUp)
CONVECTION ,
GIANT STARS ,
METAL ABUNDANCE ,
STELLAR ATMOSPHERES ,
STELLAR INTERIORS
 
DRIFT SCANS      (DriftScans)
PHOTOMETRY ,
RADIO STRUCTURE ,
SURFACE PHOTOMETRY
 
DRIFT WAVES      (DriftWaves)
WAVES
 
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Descriptionaltbroadernarrowerrelated
DRIVES      (Drives)
COELOSTATS ,
CONTROL SYSTEMS ,
SIDEROSTATS ,
TELESCOPES
 
DUST      (Dust)
cosmic dust INTERGALACTIC MATTER ,
INTERSTELLAR MATTER 		INTERPLANETARY DUST ,
INTERSTELLAR DUST ,
ZODIACAL DUST 		COMETS ,
DUST CLOUDS ,
DUST DETECTORS ,
DUST GRAINS ,
DUST NEBULAE ,
DUST SHELLS ,
DUST STORMS ,
GAS TO DUST RATIO
 
DUST CLOUDS      (DustClouds)
CLOUDS ,
INTERSTELLAR MATTER 		DUST ,
INTERSTELLAR DUST
 
DUST DETECTORS      (DustDetectors)
DETECTORS DUST
 
DUST GRAINS      (DustGrains)
INTERSTELLAR MATTER ADSORPTION ,
DUST
 
DUST NEBULAE      (DustNebulae)
INTERSTELLAR MATTER ,
NEBULAE 		DUST
 
DUST SHELLS      (DustShells)
CIRCUMSTELLAR SHELLS ,
SHELLS 		CIRCUMSTELLAR DUST ,
DUST ,
SYMBIOTIC STARS
 
DUST STORMS      (DustStorms)
DUST ,
PLANETS ,
SURFACES [CELESTIAL BODIES]
 
DWARF CEPHEIDS      (DwarfCepheids)
IRREGULAR VARIABLE STARS ,
MULTIPERIODIC VARIABLE STARS ,
PULSATING VARIABLE STARS 		CEPHEIDS ,
DELTA SCUTI STARS
 
DWARF GALAXIES      (DwarfGalaxies)
GALAXIES ,
PECULIAR GALAXIES
 
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Descriptionaltbroadernarrowerrelated
DWARF STARS      (DwarfStars)
MAINSEQUENCE STARS A DWARF STARS ,
B DWARF STARS ,
BLACK DWARF STARS ,
BROWN DWARF STARS ,
F DWARF STARS ,
FLARE STARS ,
G DWARF STARS ,
K DWARF STARS ,
LATE TYPE DWARF STARS ,
M DWARF STARS ,
NEARBY DWARF STARS ,
O DWARF STARS 		LOW LUMINOSITY STARS ,
LOW MASS STARS ,
LUMINOSITY CLASSIFICATION ,
MAINSEQUENCE ,
SUBDWARF STARS
The term alone refers to mainsequence stars, but subterms may refer to evolved stars.
 
DYNAMICAL EVOLUTION      (DynamicalEvolution)
EVOLUTION
 
DYNAMICAL FRICTION      (DynamicalFriction)
FRICTION RADIATIVE BRAKING
 
DYNAMICAL PARALLAX      (DynamicalParallax)
PARALLAXES BINARY STARS ,
KINEMATIC PARALLAX ,
MOVING CLUSTER PARALLAX
 
DYNAMICAL TIME      (DynamicalTime)
TIME
 
DYNAMICS      (Dynamics)
Combine with other terms
 
DYNAMO THEORY      (DynamoTheory)
MAGNETIC FIELDS
 
Mon Jun 2 18:21:00 2008