astronomy: classes (1678)
- Thing
- _21CmLine
- _53PerseiStar
- AbellCluster
- AbellDistanceClass
- AbellRadius
- AbellRichnessClass
- absoluteMagnitude
- absoluteMagnitudeInB
- absoluteMagnitudeInH
- absoluteMagnitudeInI
- absoluteMagnitudeInJ
- absoluteMagnitudeInK
- absoluteMagnitudeInR
- absoluteMagnitudeInU
- absoluteMagnitudeOfGalaxy
- absorptionLine
- absorptionLineSystem
- abundance
- accretionDisk
- accumulationTheory
- achondrite
- activeGalacticNucleus
- activeGalacticNucleusGalaxy
- activeGalaxy
- activeProminence
- activeRegion
- activeStar
- activityIndex
- ADwarf
- aerolite
- AeStar
- AGiant
- AlfvenWave
- AlgolVariableStar
- alpha2CanumVenaticorumStar
- amateurAstronomy
- AmCanumVenaticorumStar
- AmHerculisStar
- AmHerTypeStar
- amorGroup
- AmStar
- angle
- angleUnit
- angularDiameter
- angularRadius
- annualParallax
- annularEclipse
- anomalousXRayPulsar
- anomaly
- ansa
- antapex
- anthropicPrinciple
- anticenter
- apastron
- aperiodicComet
- aperturePhotometry
- apex
- aphelion
- apoapsis
- apogee
- ApolloGroup
- apparentIntensity
- apparentIntensityInB
- apparentIntensityInH
- apparentIntensityInI
- apparentIntensityInJ
- apparentIntensityInK
- apparentIntensityInR
- apparentIntensityInU
- apparentIntensityInV
- apparentMagnitude
- apparentPosition
- apparentSuperluminalMotion
- apsidalMotion
- apsis
- ApStar
- arc
- archaeoastronomy
- arcminute
- arcsecond
- argumentOfThePerihelion
- ascendingNode
- ashenLight
- AStar
- asteroid
- asteroidBelt
- asteroidOccultation
- asteroseismology
- astrobiology
- astrodynamics
- astroEvent
- astrographicCatalog
- astroMatterObject
- astroMeasurement
- astrometricBinaryStar
- astrometry
- astronomer
- astronomicalCatalog
- astronomicalConstant
- astronomicalInstitution
- astronomicalResearch
- astronomicalSoftware
- astronomicalTechnique
- astronomy
- astronomyEntity
- astronomyTheory
- astroObject
- astrophysicist
- astrophysics
- ASubdwarf
- ASubgiant
- ASupergiant
- asymptoticGiantBranch
- ataxite
- atlas
- atmosphere
- atmosphericExtinction
- atmosphericRadiation
- atmosphericRefraction
- atmosphericScattering
- atmosphericScintillation
- atmosphericWindow
- atomicNucleus
- australite
- axis
- BaadeWesselinkMethod
- backgroundRadiation
- BahcallSoneiraModel
- BaileyType
- BailysBead
- BallikRamsayBand
- bariumStar
- barredSpiralGalaxy
- baryonicDarkMatter
- BBand
- BDwarf
- bediasite
- BesselianElement
- BeStar
- betaCepheiStar
- BetaCepTypeStar
- betaLyraeStar
- BGalaxy
- BGiant
- BianchiCosmology
- biasedGalaxyFormation
- bigBang
- bigBangTheory
- bigCrunch
- binaryPulsar
- binaryStar
- binarySystem
- biology
- bipolarGalaxy
- bipolarGroup
- bipolarNebula
- bipolarOutflow
- blackDwarf
- blackHole
- blankField
- blazar
- BlazhkoEffect
- BlHerculisStar
- BlLac
- blueGalaxy
- blueLoop
- blueObject
- blueshift
- blueStragglerStar
- BMagnitude
- BodesLaw
- BokGlobule
- bolide
- bolometricAbsoluteMagnitude
- bolometricCorrection
- bottomupScenario
- BpStar
- brightGalaxy
- brightNebula
- brightness
- brightness
- brightnessTemperature
- brightStar
- broadAbsorptionLineQSO
- broadAbsorptionLineSystem
- broadBandPhotometry
- brownDwarf
- BStar
- BSubdwarf
- BSupergiant
- bubble
- BurkertProfile
- burningZone
- burst
- burster
- BwStar
- ByDraconisStar
- C2Band
- calciumLine
- canyon
- carbonaceousChondrite
- carbonBurning
- carbonDetonationSupernovaModel
- carbonFlash
- carbonLine
- carbonNitrogenCycle
- carbonStar
- CartesianCoordinateSystem
- cataclysmicVariableEruption
- cataclysmicVariableStar
- catalog
- cDGalaxy
- celestialCoordinateSystem
- celestialMechanics
- celestialPole
- celestialSphere
- centralStar
- Cepheid
- CepheidDistance
- CepheidStar
- Ceres
- ChandlerWobble
- ChandrasekharLimit
- chemicalAbundance
- chemicalElement
- chemistry
- ChGBand
- chondrite
- chondrules
- chromosphere
- chronometer
- ChStar
- CIEmission
- CIiRegion
- circularOrbit
- circumplanetaryMatter
- circumstellarDisk
- circumstellarDust
- circumstellarEnvelope
- circumstellarGas
- circumstellarGrain
- circumstellarMatter
- circumstellarShell
- classicalNova
- classicalTTauriStar
- classicCepheidStar
- classification
- clock
- closeBinaryStar
- closedCurve
- closedUniverse
- closeEncounter
- cloud
- CnoAnomaly
- CnStar
- cocoonStar
- coldDarkMatter
- collapse
- collapsedStar
- collapsingCloud
- color
- colorExcess
- colorLuminosityRelation
- colorMagnitudeRelation
- colorRedshiftRelation
- colorTemperature
- comet
- cometaryGlobule
- commensurateOrbit
- compactGalaxy
- compactGroup
- compactHIiRegion
- compactNebula
- compactNucleus
- compactObject
- compactSource
- companionGalaxy
- companionStar
- comparisonStar
- conjunction
- constellation
- contactBinaryStar
- continuumRadiation
- convectionZone
- convectiveEnvelope
- convectiveShell
- convectiveZone
- coolingFlow
- coordinate
- coordinates
- coordinateSystem
- core
- coreRadius
- corona
- coronalDimming
- coronalGreenLine
- coronalHole
- coronalLine
- coronalLoop
- coronalMassEjection
- coronalPlume
- coronalTransient
- coronalWave
- correction
- correctionForInterveningMatter
- correctionForObscuration
- correctionForProjection
- correctionForTimeDelay
- correlation
- cosmic
- cosmicAbundance
- cosmicBackgroundRadiation
- cosmicElectrodynamics
- cosmicMatterDensity
- cosmicNoise
- cosmicRay
- cosmicRayAstronomy
- cosmicRayShower
- cosmicRaySource
- cosmicString
- cosmochemistry
- cosmochronology
- cosmogony
- cosmologicalConstant
- cosmologicalDistanceScale
- cosmologicalModel
- cosmologicalParameter
- cosmology
- crater
- criticalDensity
- crossingTime
- CsStar
- curveOfGrowth
- cusp
- cuspCrossing
- cylindricalCoordinateSystem
- dampedLymanAlphaAbsorptionSystem
- darkCloud
- darkEnergy
- darkMatter
- darkMatterHalo
- darkNebula
- darlyTypeGalaxy
- DaStar
- database
- dataCollection
- dataStandard
- DbStar
- DDOClass
- decelerationParameter
- declination
- degenerateDwarf
- degenerateMatter
- degenerateStar
- deltaDelphiniStar
- deltaScutiStar
- denseCloud
- density
- densityBounded
- densityDistribution
- densityFluctuation
- densityPerturbation
- densityVariation
- densityWaveModel
- descendingNode
- deSitterUniverse
- detachedBinaryStar
- detection
- deVaucouleursType
- DGalaxy
- diameter
- diffuseNebula
- diracCosmology
- direction
- dirtySnowballTheory
- discreteRadioSource
- disk
- diskFlaring
- diskGalaxy
- diskOfGalaxy
- diskPopulation
- diskStar
- distance
- distanceIndicator
- distanceModulus
- distanceScale
- diurnalParallax
- DopplerEffect
- DoStar
- doubleGalaxy
- doubleModeCepheid
- doubleModePulsation
- doubleModeVariableStar
- doubleQuasar
- DqHerculisStar
- dredgeUp
- duration
- dust
- dustCloud
- dustGrain
- dustNebula
- dustShell
- dwarf
- dwarfCepheid
- dwarfElliptical
- dwarfGalaxy
- dwarfIrregular
- dwarfNova
- dwarfPlanet
- dwarfSpheroidalGalaxy
- dynamicalEvolution
- dynamicalFriction
- dynamicalParallax
- earlyTypeEmissionStar
- earlyTypeGalaxy
- earlyTypeStar
- earlyTypeSupergiant
- earlyTypeVariableStar
- earlyUniverse
- EarthMoonSystem
- EarthOrbit
- EarthRotation
- eccentricAnomaly
- eccentricity
- eclipse
- eclipsingBinaryStar
- ecliptic
- eclipticCoordinateComponent
- eclipticCoordinates
- eclipticCoordinateSystem
- eclipticLatitude
- eclipticLongitude
- eclipticPlane
- eclipticPole
- ECorona
- EddingtonApproximation
- EddingtonLemaitreUniverse
- EddingtonLimit
- EdgeworthKuiperBelt
- EdgeworthKuiperBeltObject
- effectiveTemperature
- EGalaxy
- EinsteinRing
- EinsteinUniverse
- ejecta
- electrodynamics
- electronTemperature
- elementFormation
- elevation
- ellipsoidalVariableStar
- ellipticalGalaxy
- ellipticalOrbit
- elongation
- emissionLine
- emissionLineGalaxy
- emissionLineObject
- emissionLineStar
- emissionNebula
- emissionSpectrum
- EmRadiation
- encounter
- energy
- envelope
- EpGalaxy
- ephemeralActiveRegion
- ephemeris
- ephemerisTime
- epicycle
- epoch
- equationOfTheCenter
- equationOfTheEquinox
- equationOfTime
- equator
- equator
- equatorCorrection
- equatorDetermination
- equatorialBulge
- equatorialCoordinate
- equatorialCoordinateComponent
- equatorialCoordinates
- equatorialCoordinateSystem
- equatorialPlane
- equatorialSystem
- equinoxPosition
- equivalentWidth
- eRegion
- eruption
- eruptiveBinaryStar
- event
- eventHorizon
- EvershedEffect
- evolution
- evolutionaryTrack
- evolvedStar
- excitingStar
- exoSolarPlanet
- expandingEnvelope
- expandingUniverse
- explosion
- explosion
- exponentialProfile
- extendedObject
- extendedSource
- extragalacticAstronomy
- extragalacticObject
- extragalacticRadioSource
- extrasolarPlanet
- extremeCarbonStar
- extremeHorizontalBranchStar
- extremePopulationIStar
- FaberJacksonDistance
- FaberJacksonRelation
- facula
- faintBlueStar
- faintGalaxy
- faintStar
- fastNova
- FCorona
- FDwarf
- FermiDiracStatistics
- FGiant
- field
- fieldGalaxy
- fieldStar
- filamentaryNebula
- fillingFactor
- findingList
- fireball
- fiveMinuteOscillations
- FkCatalogSystem
- flare
- flareStar
- flashSpectrum
- flashStar
- flatnessProblem
- flatUniverse
- fLayer
- flux
- forbushEffect
- FraunhoferLine
- fRegion
- frequency
- friction
- FriedmannUniverse
- frozenInElement
- FStar
- FSubdwarf
- FSubgiant
- FSupergiant
- fundamentalPlane
- fundamentalStar
- fundamentalSystem
- FuOrionisStar
- galactic
- GalacticAnticenter
- GalacticAstronomy
- GalacticCluster
- GalacticCoordinate
- GalacticCoordinateComponent
- GalacticCoordinates
- GalacticCoordinateSystem
- GalacticCosmicRay
- GalacticCylindricalCoordinateSystem
- GalacticDynamics
- GalacticLatitude
- GalacticLongitude
- GalacticNucleus
- GalacticPole
- GalacticRotation
- GalacticSpurs
- GalacticStructure
- GalacticWindow
- GalacticZcoordinate
- GalactocentricDistance
- galaxy
- galaxyAxialRatio
- galaxyAxialRatioIntrinsic
- galaxyBar
- galaxyBulge
- galaxyBulgeToDiskRatio
- galaxyCatalog
- galaxyCenter
- galaxyCluster
- galaxyClusterAffiliation
- galaxyContent
- galaxyCount
- galaxyDiskThickness
- galaxyDistribution
- galaxyEncounter
- galaxyEvolution
- galaxyFormation
- galaxyGlobalLineWidth
- galaxyGroup
- galaxyHalo
- galaxyHiLineWidth
- galaxyHiMassFraction
- galaxyInternalReddening
- galaxyMassToLightRatio
- galaxyMeasurement
- galaxyMerger
- galaxyMorphologyType
- GalaxyMorphologyType
- galaxyNucleus
- galaxyPair
- galaxyPart
- galaxyRotation
- galaxyRotationCurve
- galaxySimulation
- galaxyStructure
- galaxyTheory
- galaxyVoid
- galileanSatellite
- gammaCassiopeiaeStar
- gammaDorTypeStar
- gammaRayAstronomy
- gammaRayBackground
- gammaRayBurst
- gammaRaySource
- gasCloud
- gaseousNebula
- gaseousNebulaCatalog
- gaseousSphere
- gasToDustRatio
- GDwarf
- gegenschein
- generalAstroMeasurement
- geocentricCoordinate
- geocentricCoordinateComponent
- geocentricCosmology
- geocentricOrbit
- geocorona
- gfValue
- GGiant
- giantBranch
- giantBranchStar
- giantEllipticalGalaxy
- giantGalaxy
- giantMolecularCloud
- giantPlanet
- giantRadioGalaxy
- giantStar
- GLAT
- globularCluster
- globularClusterCatalog
- globule
- GLON
- GoedelUniverse
- GouldsBelt
- granulation
- granule
- gravitationalCollapse
- gravitationalDeflection
- gravitationalEquilibrium
- gravitationalHorizon
- gravitationalImage
- gravitationalInstability
- gravitationalInteraction
- gravitationalLens
- gravitationalLensingShear
- gravitationalLensPart
- gravitationalLensSystem
- gravitationallyLensedSource
- gravitationalMicrolens
- gravitationalRadiation
- gravitationalSource
- gravityAnomaly
- gravityDarkening
- gravityLaw
- greatCircle
- greatestElongation
- groundBasedAstronomy
- GStar
- GSubdwarf
- GSubgiant
- GSupergiant
- gValue
- haloStar
- HAlphaEmissionLineStar
- HAndKLine
- HarmanSeatonSequence
- harmonicRadius
- HaroGalaxy
- HayashiTrack
- headTailGalaxy
- heavyElement
- heavyMetalStar
- HeIiIonizationZone
- heliocentricCorrection
- heliocentricOrbit
- heliocentricVelocity
- heliopause
- helioseismology
- heliosphere
- heliumBurning
- heliumFlash
- heliumPoorStar
- heliumProblem
- heliumRichStar
- heliumShellFlash
- HelmholtzKelvinContraction
- HenryDraperSystem
- HenyeyTrack
- HerbigAeBeStar
- HerbigHaroObject
- HertzsprungGap
- HertzsprungRussellDiagram
- HessDiagram
- HIAbsorption
- HicksonCompactGroup
- HICloud
- HIContent
- HIEmission
- hierarchicalCosmology
- highEnergyAstrophysics
- highEnergyRadiation
- highLuminosityStar
- highMassStar
- highMassXRayBinaryStar
- highVelocityCloud
- highVelocityStar
- HIiRegion
- HirayamaFamily
- HiRegion
- HIRegion
- HIShell
- history
- historyOfAstronomy
- HMagnitude
- HolmbergRadius
- holmiumStar
- HoltsmarkApproximation
- horizonCoordinateSystem
- horizonProblem
- horizontalBranchStar
- horizontalParallax
- hourAngle
- HoyleNarlikarTheory
- HubbleClass
- HubbleClassification
- HubbleConstant
- HubbleDiagram
- HubbleLaw
- HubbleRadius
- HubbleSandageVariableStar
- HubbleTime
- hydrogen
- hydrogenBurning
- hydrogenDeficientStar
- hyperbolicOrbit
- hypergalaxy
- hypergiant
- hypernova
- HzHerculisStar
- IBand
- IGalaxy
- Image
- IMagnitude
- ImfAxis
- ImfExponent
- ImfFit
- impactCrater
- inclination
- indochinite
- inflationaryUniverse
- infraredAstronomy
- infraredGalaxy
- infraredPhotometry
- infraredSource
- infraredTransmissionWindow
- initialMassFunction
- innerCore
- innerLagrangianPoint
- innerPlanet
- instabilityStrip
- institution
- integer
- integratedMagnitude
- intensity
- interactingBinaryStar
- interactingGalaxies
- interactingGalaxy
- interaction
- interArmRegion
- intercloudGas
- intercloudMatter
- interferometry
- intergalacticAbsorption
- intergalacticCloud
- intergalacticGas
- intergalacticMatter
- intergalacticSpace
- intermediateMassXRayBinaryStar
- intermediatePopulationStar
- intermediateTypeStar
- interplanetaryDust
- interplanetaryGas
- interplanetaryGrain
- interplanetaryMagneticField
- interplanetaryMatter
- interplanetaryScintillation
- interplanetarySpace
- intersection
- interstellarAbsorption
- interstellarBand
- interstellarBubble
- interstellarCloud
- interstellarCommunication
- interstellarDust
- interstellarGas
- interstellarLine
- interstellarMagneticField
- interstellarMatter
- interstellarMolecule
- interstellarReddening
- interstellarScintillation
- interstellarSpace
- interstellarWind
- intraclusterMatter
- intraClusterSpace
- intrinsicColor
- intrinsicVariableStar
- invariablePlane
- invention
- inverseMassUnit
- inversePCygniLine
- ionDensity
- ionizationPotential
- ionosphericScintillation
- IrasGalaxy
- ironMeteorite
- irregularGalaxy
- irregularVariableStar
- isophotalAngularDiameter
- isophotalAngularRadius
- isophotalDiameter
- isophotalRadius
- isophote
- isoplanaticPatch
- IsoTime
- JdTime
- jet
- JMagnitude
- JohnsonBand
- jovianPlanet
- kappaMechanism
- KapteynSelectedArea
- KapteynUniverse
- KCorona
- kCorrection
- KDwarf
- KelvinTimescale
- KeplerianOrbit
- KeplersLaw
- KerrBlackHole
- KGiant
- kinematicParallax
- KirkwoodGap
- KleinAlfvenCosmology
- KLine
- KMagnitude
- KramersOpacity
- KreutzSungrazer
- KruskalDiagram
- KStar
- KSubdwarf
- KSubgiant
- KSupergiant
- KuiperBand
- L1
- L2
- L3
- L4
- L5
- LagrangianPoint
- lambdaEridaniStar
- largeScaleStructure
- lateTypeDwarf
- lateTypeGalaxy
- lateTypeGiant
- lateTypeStar
- lateTypeSubdwarf
- lateTypeSupergiant
- lateTypeVariableStar
- latitude
- LbVariableStar
- LcVariableStar
- LDwarf
- LemaitreUniverse
- length
- lenticularGalaxy
- LGalaxy
- libration
- librationOrbit
- lightAbsorption
- lightAbsorption
- lightCurve
- limbBrightening
- limbDarkening
- limitingMagnitude
- line
- lineBlanketing
- lineBlending
- lineBlocking
- lineOfApsides
- lineOfNodes
- lineParameter
- lineProfile
- liner
- linerGalaxy
- lineShift
- lineWidth
- lithiumPoorStar
- lithiumStar
- LMagnitude
- lobe
- localCoordinate
- localHypothesisOfQuasars
- LocalStandardOfRest
- logGValue
- longitude
- longitudeOfTheAscendingNode
- longPeriodComet
- longPeriodVariableStar
- lookbackTime
- lowLuminosityStar
- lowMassStar
- lowMassXRayBinaryStar
- LStar
- LSubdwarf
- luminosity
- luminosity
- luminosityClass
- luminosityClassification
- luminosityDispersionRelation
- luminosityDistribution
- luminosityFunction
- luminousArc
- luminousBlueVariableStar
- luminousMass
- lunar
- lunarDome
- lunarEclipse
- lunarOccultation
- lunarPhase
- lunarTheory
- LymanAlphaAbsorptionSystem
- LymanAlphaForest
- LymanLimitAbsorptionLineSystem
- macroSpicule
- MagellanicCloud
- MagellanicStream
- magnetar
- magneticField
- magneticStar
- magneticVariableStar
- magnetosphere
- magnitude
- mainSequence
- mainSequenceStar
- manganeseStar
- map
- maria
- MarkarianGalaxy
- maser
- mass
- massDistribution
- massFunction
- massiveGalaxy
- massiveObject
- massiveStar
- massLoss
- massLuminosityRelation
- massRadiusRelation
- massToLightRatio
- massTransfer
- matter
- matterObject
- MDwarf
- meanAnomaly
- meanElement
- meanIntensity
- measurement
- measuringInstrument
- mediumBandPhotometry
- megalithicAstronomy
- megamaser
- mercuryManganeseStar
- merger
- mergingGalaxies
- meridian
- meridianObservation
- MeStar
- metagalaxy
- metalAbsorptionLineSystem
- metalDeficientStar
- metalPoorStar
- metalRichStar
- meteor
- meteorite
- meteoriteCrater
- meteoriteImpact
- meteoroid
- meteoroidDustCloud
- meteorShower
- meteorStream
- meteorTrail
- MeVariableStar
- MGiant
- micrometeorite
- micrometeoroid
- microwaveBackground
- microwaveRadiation
- millimeterAstronomy
- millisecondPulsar
- MilneEddingtonApproximation
- minorPlanetFamily
- MiraStar
- MiraVariableStar
- missingMass
- missingMassProblem
- MjdTime
- MkClassification
- MMagnitude
- model
- moldavite
- molecularAstrophysics
- molecularBand
- molecularCloud
- molecule
- Moonquake
- motion
- movingClusterParallax
- mRegion
- MStar
- MSubdwarf
- MSubgiant
- MSupergiant
- multiColorPhotometry
- multiPeriodicPulsation
- multiPeriodicVariableStar
- multipleGalaxy
- multipleStar
- nadir
- narrowBandPhotometry
- naturalSatellite
- NavarroFrenkWhiteProfile
- nBodyProblem
- nBodySimulation
- nearbyDwarf
- nearbyGalaxy
- nearbyStar
- nearEarthAsteroid
- nebula
- nebularFilament
- nebularVariableStar
- NeumannLine
- neutralGas
- neutronStar
- NGalaxy
- nightSkyBrightness
- NMagnitude
- node
- noise
- nonLteTransfer
- nonMainSequenceStar
- nonThermalSource
- northPoint
- nova
- novaLikeVariable
- novaStar
- NStar
- nuclearAstrophysics
- nuclearFusion
- nuclearReaction
- nucleosynthesis
- nucleusCelestialObject
- numberDensityPerUnitMass
- numericalSimulation
- OAssociation
- ObAssociation
- obliquityOfEcliptic
- observationalCosmology
- observingTechnique
- ObStar
- ObSupergiant
- occultation
- ODwarf
- OefStar
- OeStar
- OfStar
- OGiant
- OhAbsorption
- OhCloud
- OhEmission
- OhIrStar
- OhMaser
- OhSource
- OlbersParadox
- oldStar
- OMagnitude
- OmegaBaryon
- OmegaLambda
- OmegaMass
- OmegaMatter
- OmegaNaught
- omegaNeutrino
- OmegaParameter
- OortCloud
- OortFormulae
- OosterhoffGroup
- opacity
- openCluster
- openClusterCatalog
- openStarCluster
- openUniverse
- opposition
- optical
- opticalBurst
- opticalDepth
- opticalDoubleStar
- opticalFlare
- opticalIdentification
- opticallyViolentlyVariableObject
- opticalOutburst
- opticalPosition
- opticalProperty
- opticalPulsar
- orbit
- orbitalAnomaly
- orbitalElement
- orbitalEvolution
- orbitalHump
- orbitalMotion
- orbitalPeriod
- orbitalTheory
- orbitalVelocity
- orbitDetermination
- oscillatingUniverse
- oscillation
- osculatingOrbit
- osculatoryElement
- OStar
- OSubdwarf
- OSupergiant
- outburst
- outdatedBelief
- outerPlanet
- OxygenBBand
- oxygenBurning
- parabolicOrbit
- parabolicVelocity
- paradox
- parallax
- parsec
- partialEclipse
- particleDensity
- PCygniLineProfile
- peculiarGalaxy
- peculiarGiant
- peculiarMotion
- peculiarObject
- peculiarStar
- peculiarVariableStar
- peculiarVelocity
- pencilBeam
- penumbra
- penumbralFilament
- periapsis
- periastron
- perigee
- perihelion
- periodAgeRelation
- periodColorRelation
- periodDensityRelation
- periodicComet
- periodicOrbit
- periodicVariableStar
- periodLuminosityColorRelation
- periodLuminosityRelation
- periodMassRelation
- periodRadiusRelation
- periodSpectrumRelation
- Pg1159Star
- photoelectricMagnitude
- photographicMagnitude
- photometricParallax
- photometricPeriod
- photometricStandardStar
- photometry
- photosphere
- photovisualMagnitude
- physicalConstant
- physicalDistance
- physicalObject
- physicalProcess
- picketFenceModel
- plage
- plane
- planet
- planetar
- planetary
- planetaryAlignment
- planetaryNebula
- planetaryNebulaCatalog
- planetaryRing
- planetarySystem
- planetarySystemPart
- planetaryTheory
- planetEquator
- planetesimal
- planetocentricCoordinate
- planetographicCoordinate
- planetology
- planetSatellite
- plasma
- plasmaCloud
- plasmaJet
- PMagnitude
- PogsonScale
- point
- polarimetry
- pole
- populationIiCepheid
- populationIiiStar
- populationIiStar
- populationIStar
- position
- positionAngle
- postAsymptoticGiantBranch
- postMainSequenceStar
- preGalacticStar
- preMainSequenceStar
- preNova
- preSolarNebula
- preSupernova
- primaryStar
- primordialFireball
- primordialGalaxy
- problem
- progenitor
- program
- prominence
- prominenceEruption
- properMotion
- protocluster
- protogalaxy
- protonProtonReaction
- protoplanet
- protoplanetaryNebula
- protoStar
- protostar
- protostellarDisk
- pulsar
- pulsatingVariableStar
- pulsation
- pulsationTheory
- QMagnitude
- quantity
- quantumCosmology
- quasar
- quasarGalaxyPair
- quiescentProminence
- quietSun
- radarAstronomy
- radialVelocity
- radiantMeteor
- radiantMovingCluster
- radiation
- radiationBelt
- radiativeBraking
- radioAstrometry
- radioAstronomy
- radioBackground
- radioBurst
- radioCore
- radioFlare
- radioGalaxy
- radioInterference
- radioInterferometry
- radioJet
- radioOccultation
- radioPulsar
- radioQuietQuasar
- radioRecombinationLine
- radioSource
- radioSourceCatalog
- radioSourceCount
- radioStar
- radioStructure
- radius
- radiusLuminosityRelation
- rapidBurst
- RAssociation
- RBand
- RCanisMajorisStar
- RCoronaeBorealisStar
- realAnomaly
- receiver
- recurrentNova
- reddenedStar
- reddening
- reddeningLaw
- redDwarf
- redDwarfFlareStar
- redGiant
- redGiantBump
- redGiantClump
- redGiantTip
- redshift
- redshiftDistanceRelation
- redshiftMagnitudeRelation
- redStar
- redSupergiant
- reflectionNebula
- refraction
- regionOfSky
- relativisticAstrophysics
- relativisticCosmology
- relativisticDisk
- relativisticStar
- resonanceGap
- RgbTipDistance
- rhoCassiopeiaeStar
- rightAscension
- rill
- ring
- ringDivision
- ringGalaxy
- ringNebula
- RMagnitude
- RocheLimit
- RocheLobe
- RosselandOpacity
- rotatingBody
- rotatingStar
- rotation
- rotationalVelocity
- rProcess
- RrabStar
- RraStar
- RrbStar
- RrcStar
- RrLyraeStar
- RrTelescopiiStar
- RsCanumVenaticorumStar
- RStar
- runawayStar
- RvTauriStar
- RwAurigaeStar
- SahaEquation
- SalpeterFunction
- SarosCycle
- satellite
- SbfDistance
- scattering
- SchonbergChandrasekharLimit
- scientificField
- scientist
- scintillation
- SDoradusStar
- secondaryCosmicRay
- secondaryStar
- secularParallax
- seismology
- selenocentricCoordinate
- semiBariumStar
- semiDetachedBinaryStar
- semiRegularVariableStar
- Seyfert1
- Seyfert2
- SeyfertGalaxy
- SeyfertNucleus
- SGalaxy
- SGB
- SGL
- SGX
- SGY
- SGZ
- shadowBand
- shell
- shellBurning
- shellEjection
- shellStar
- shepherdSatellite
- shortPeriodVariableStar
- sigma8
- siliconBurning
- siliconStar
- simulation
- SiOMaser
- skyBrightness
- skyNoise
- skySurvey
- slowNova
- softGammaRayRepeater
- solar
- solarActivity
- solarAstronomy
- solarAtmosphere
- solarConstant
- solarCorona
- solarCycle
- solarDay
- solarEclipse
- solarFilament
- solarInterior
- solarMotion
- solarNebula
- solarNeutrinoProblem
- solarOscillation
- solarParallax
- solarphysics
- solarPlanetaryRelation
- solarStorm
- solarSurface
- solarSystemPlanet
- solarTerrestrialRelation
- solarWind
- solidAngle
- source
- space
- spaceAstronomy
- spaceBiology
- spaceMotion
- spaceResearch
- spaceScienceInstitution
- specificIntensity
- spectralClassification
- spectralLine
- spectralType
- spectrophotometry
- spectroscopicBinaryStar
- spectroscopy
- spectrum
- spectrumVariableStar
- spheroid
- spicule
- spiralArm
- spiralDensityWave
- spiralGalaxy
- spiralGalaxyMeasurement
- SStar
- stableLagrangianPoint
- standardStar
- star
- starAssociation
- starAtlas
- starburstGalaxy
- starCatalog
- starCluster
- starCount
- starDistribution
- starFormation
- starMeasurement
- starPart
- starSimulation
- starspot
- starSystemCatalog
- staticUniverse
- statisticalParallax
- statisticalRelation
- steadyStateTheory
- stellar
- stellarAssociation
- stellarAstronomy
- stellarAtmosphere
- stellarBlackHole
- stellarDynamics
- stellarEvolution
- stellarEvolutionPhase
- stellarInterior
- stellarLayer
- stellarMotion
- stellarObject
- stellarOscillation
- stellarPopulation
- stellarRemnant
- stellarRing
- stellarStructure
- stellarSurfaceFeature
- stellarSystemCatalog
- stellarTheory
- stellarWind
- streamer
- StromgrenSphere
- strontiumStar
- structure
- subdwarf
- subgiant
- subluminousStar
- submillimeterAstronomy
- sunspot
- sunspotCycle
- sunspotGroup
- sunspotNumber
- SunyaevZeldovichEffect
- supercluster
- supergalacticCoordinates
- supergalacticCoordinateSystem
- supergalacticLatitude
- supergalacticLongitude
- supergalacticXcoordinate
- supergalacticXYZ
- supergalacticYcoordinate
- supergalacticZcoordinate
- supergiant
- supergranulation
- superhump
- superMassiveBlackHole
- supermassiveStar
- supernova
- supernovaEnvelope
- supernovaExplosion
- supernovaRemnant
- surfaceBrightness
- surfaceGravity
- surfaceOfCelestialBody
- surfacePhotometry
- survey
- SuUrsaeMajorisStar
- SVulpeculaeStar
- SwanBand
- SxArietisStar
- SxPhoenicisStar
- symbioticNova
- symbioticStar
- synchronousRotation
- synodicPeriod
- system
- systemOfGalaxies
- systemOfStars
- tangentialVelocity
- TAssociation
- TDwarf
- teachingInAstronomy
- technetiumStar
- tektite
- telluricLine
- temperature
- terminatorLine
- tertiaryStar
- theoreticalAstrophysics
- theory
- tidalDisruption
- tidalDistortion
- tidalFriction
- tidalInteraction
- tidalRadius
- time
- time
- topdownScenario
- topocentricCoordinate
- totalEclipse
- transit
- transitTime
- transNeptunianObject
- transplutonianPlanet
- transverseVelocity
- trigonometricParallax
- tripleStar
- tripleStellarSystem
- trojanGroup
- trueAnomaly
- truePosition
- TStar
- TSubdwarf
- TTauriStar
- TullyFisherRelation
- turnoffPoint
- twoBodyProblem
- twoColorPhotometry
- twoSpectrumBinaryStar
- typeIaSupernova
- typeIbSupernova
- typeIcSupernova
- typeIiSupernova
- UBand
- UGeminorumStar
- ultraLuminousGalaxy
- ultravioletAstronomy
- ultravioletBackground
- ultravioletColor
- ultravioletContinuum
- ultravioletExcessStar
- ultravioletExtinction
- ultravioletLuminosity
- ultravioletPhotometry
- ultravioletRadiation
- ultravioletSource
- ultravioletSurvey
- UMagnitude
- umbra
- unitless
- universe
- universeSimulation
- unstableLagrangianPoint
- upsilonSagittariiStar
- urcaProcess
- UuHerculisStar
- UvCetiStar
- UvPerseiStar
- UxUrsaeMajorisStar
- vanAllenRadiationBelt
- variability
- variableEruption
- variableSource
- variableStar
- VBand
- velocity
- velocityCurve
- visualBinaryStar
- visualMagnitude
- visualObservation
- VMagnitude
- void
- VoigtProfile
- vonZeipelTheorem
- VySculpturisStar
- W20
- waterMaser
- wavelength
- WcnStar
- WcStar
- weakGBandStar
- weakLineTTauriStar
- whiteDwarf
- whiteHole
- wideBinaryStar
- WilsonBappuEffect
- WilsonEffect
- window
- WnStar
- WolfDiagram
- WolfRayetStar
- WUrsaeMajorisStar
- WVirginisStar
- WVirTypeStar
- WzSagittaeStar
- xCoordinate
- XRayAstronomy
- XRayBackground
- XRayBinaryStar
- XRayBrightPoint
- XRayBurst
- XRayContinuum
- XRayFlare
- XRayIdentification
- XRayLuminosity
- XRayMap
- XRayNova
- XRayPulsar
- XRayQuasar
- XRaySource
- XRaySpectrum
- XRayStar
- XRayStructure
- XRaySurvey
- XRayTransient
- yCoordinate
- YerkesClass
- YerkesClassification
- youngDiskCepheid
- youngStar
- youngStarCluster
- youngStellarObject
- ZAndromedaeStar
- ZCamelopardalisStar
- zCoordinate
- zeroAgeHorizontalBranch
- zeroAgeMainSequence
- zirconiumStar
- zodiac
- zodiacalDust
- zodiacalDustCloud
- zodiacalLight
- zoneOfTotality
- ZzCetiStar