List of astronomical topics
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This page aims to list articles on Wikipedia that are related to astronomy, astrophysics and cosmology. This is so that those interested in the subject can monitor changes to the pages by clicking on Related changes in the sidebar.
The list is not necessarily complete or up to date - if you see an article that should be here but isn't (or one that shouldn't be here but is), please update the page accordingly.
Three astronomy-related WikiProjects are being developed, please visit WikiProject Astronomical Objects, WikiProject Constellations, and WikiProject Telescopes.
| Contents: | Top - 0–9 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 |
|---|
[edit]
0–9
- 1 Ceres
- 1P/Halley
- 1st High Energy Astrophysics Observatory
- 2 Pallas
- 2M1207
- 2M1207b
- 2MASS
- 2P/Encke
- 2dF Galaxy Redshift Survey
- 2C
- 3 Juno
- 3C
- 3C9
- 3C48
- 3C58
- 3C75
- 3C191
- 3C273
- 3D/Biela
- 3.67 m Advanced Electro Optical System Telescope
- 4 Vesta
- 4C
- 4C Array
- 5 Astraea
- 5C
- 6 Hebe
- 6C
- 8C
- 9C
- 9P/Tempel
- 10 Hygiea
- 12P/Pons-Brooks
- 14 Herculis
- 15 Eunomia
- 16 Cygni
- 16 Psyche
- 20 Massalia
- 21 Lutetia
- 21P/Giacobini-Zinner
- 24 Themis
- 25 Phocaea
- 29P/Schwassmann-Wachmann
- 31 Euphrosyne
- 34 Tauri
- 40 Eridani
- 43 Ariadne
- 44 Nysa
- 45 Eugenia
- 47 Ursae Majoris
- 48 Doris
- 51 Pegasi
- 51 Pegasi B
- 51 Pegasi b
- 52 Europa
- 55 Cancri
- 55P/Tempel-Tuttle
- 61 Cygni
- 61 Cygni A
- 61 Cygni B
- 65 Cybele
- 67P/Churyumov-Gerasimenko
- 70 Virginis
- 71 Niobe
- 81P/Wild
- 87 Sylvia
- 90 Antiope
- 92 Undina
- 93 Minerva
- 94 Aurora
- 95 Arethusa
- 106 Dione
- 107 Camilla
- 110 Lydia
- 153 Hilda
- 154 Bertha
- 221 Eos
- 243 Ida
- 253 Mathilde
- 279 Thule
- 323 Brucia
- 324 Bamberga
- 342 Endymion
- 433 Eros
- 434 Hungaria
- 451 Patientia
- 511 Davida
- 588 Achilles
- 624 Hektor
- 674 Rachele
- 704 Interamnia
- 944 Hidalgo
- 951 Gaspra
- 1036 Ganymed
- 1221 Amor
- 1566 Icarus
- 1620 Geographos
- 1685 Toro
- 1862 Apollo
- 2001 QR322
- 2003 EL61
- 2003 UB313
- 2004 AS1
- 2005 FY9
- 2060 Chiron
- 2062 Aten
- 2063 Bacchus
- 3001 Michelangelo
- 3018 Godiva
- 3200 Phaethon
- 3467 Bernheim
- 3753 Cruithne
- 3834 Zappafrank
- 4179 Toutatis
- 4544 Xanthus
- 4593 Reipurth
- 4769 Castalia
- 5145 Pholus
- 5261 Eureka
- 5381 Sekhmet
- 5535 Annefrank
- 7066 Nessus
- 11169 Alkon
- 18610 Arthurdent
- 28978 Ixion
- 50000 Quaoar
- 90377 Sedna
- 90482 Orcus
- 99942 Apophis
[edit]
A
- A New Theory of Magnetic Storms
- A-type asteroid
- Aaronson, Marc
- Abdulmelik, Chalid Ben
- Abell, George Ogden
- Aberration in optical systems
- Aberration of light
- Absolute Visual Magnitude
- Absolute date
- Absolute magnitude
- Accelerating universe
- Accretion disc
- Accretion disk
- Achernar
- Achondrite
- Achromatic doublet
- Achromatic lens
- Acrux
- Active Galactic Nuclei
- Active galaxy
- Active optics
- Adams, John Couch
- Adaptive optics
- Adara
- Adelard of Bath
- Adhara
- Adler Planetarium
- Adrastea
- Advanced Satellite for Cosmology and Astrophysics
- Aether
- Aether theory
- Afterglow
- AGASA
- Age of the Earth
- Age of the Universe
- AIPS
- Airglow
- Airy disc
- Airy, George
- Aitken, Robert
- Al Sufi
- Al Sufi, 'Abd Al-Rahman
- Al-Batani
- Muḥammad ibn Mūsā al-Ḵwārizmī
- Albategnius
- Albedo
- Albert Abraham Michelson
- Albiorix (moon)
- Albireo
- Alcor
- Aldebaran
- Aldhelm, Bishop of Sherborne
- Alfonsine tables
- Alfonso X of Castile
- Alfven universe
- Alfvén, Hannes Olof Gösta
- Algieba
- Algol
- ALH84001
- Alioth
- Alkaid
- Allegheny Observatory
- Almach
- Almagest
- Alnilam
- Alnitak
- Alniyat
- Alpha Andromedae
- Alpha Centauri
- Alpha Centauri A
- Alpha Centauri B
- Alpha Persei
- Alpha process
- Alpher-Bethe-Gamow theory
- Alpheratz
- Alphonsine tables
- Altair
- Altazimuth mount
- Altitude
- Aludra
- Alura
- Amalthea (moon)
- Amateur astronomy
- Amateur telescope making
- American Astronomical Society
- American Nebula
- Amor asteroid
- Amort, Eusebius
- Analemma
- Ananke (moon)
- Ananke group
- Anaximander
- Andromeda (constellation)
- Andromeda Galaxy
- Andronicus of Cyrrhus
- Anglo-Australian Telescope
- Angular diameter
- Angular diameter distance
- Angular size redshift relation
- Angular frequency
- Angular measurement
- Angular resolution
- Annibale de Gasparis
- Annie Jump Cannon
- Anomalistic month
- Anomalous cosmic ray
- Anomalous phenomenon
- Anomaly (astronomy)
- Antarctic Submillimeter Telescope and Remote Observatory
- Antares
- Antenna (electronics)
- Anthropic principle
- Antlia
- Antonín Mrkos
- Apastron
- Aperture
- Aperture Masking Interferometry
- Aperture synthesis
- Aphelion
- Apoapsis
- Apogee
- Apollo
- Apollo 11
- Apollo 17
- Apollo asteroid
- Apollo program
- Apparent Visual Magnitude
- Apparent magnitude
- Apparent motion
- Apparent solar day
- Apsides
- Apsis
- Apus
- Aquarius
- Aquila (constellation)
- Arago, Dominique
- Arago, François Jean Dominique
- Aratus
- Archaeoastronomy
- Archimedes
- Arcminute
- Arcminute Microkelvin Imager
- Arcsecond
- Arcturus
- Arecibo Observatory
- Arecibo radio telescope
- Argo Navis
- Argument of Perihelion
- Argument of the perihelion
- Ariane 5
- Ariel
- Aries
- Aristarchos 2.3 m Telescope Project
- Aristarchus of Samos
- Aristotle
- Arjuna
- Armillary sphere
- Arno Penzias
- Arp, Halton
- Array of Low Energy X-ray Imaging Sensors
- Arrhenius, Svante
- Artemova, Ioulia Vladimirovna
- Aryabhata
- Asterism (astronomy)
- Asteroid
- Asteroid belt
- Asteroid deflection strategies
- Asteroid moon
- Asteroid spectral types
- Asteroseismology
- Astigmatism
- ASTRO-E
- Astrobiology
- Astrochemistry
- Astrodynamics
- Astrolabe
- Astrometric binary
- Astrometry
- Astronautics
- Astronomer
- Astronomer Royal
- Astronomers
- Astronomical
- Astronomical Journal
- Astronomical Julian calendar
- Astronomical Society of the Pacific
- Astronomical Unit
- Astronomical aberration
- Astronomical body
- Astronomical catalogue
- Astronomical conjunction
- Astronomical distance
- Astronomical interferometer
- Astronomical naming conventions
- Astronomical object
- Astronomical opposition
- Astronomical seeing
- Astronomical society
- Astronomical spectroscopy
- Astronomical transit
- Astronomical unit
- Astronomical year numbering
- Astronomy
- Astronomy and astrophysics
- Astrophotography
- Astrophysical Journal
- Astrophysicist
- Astrophysics
- Astrophysics Data System
- Asymptotic Giant Branch
- Atacama Large Millimeter Array
- Aten
- Aten asteroid
- Athena (Mars missions in disambiguation)
- Atkinson, Robert
- Atlas (moon)
- Atmosphere
- Atria
- Aura
- Auriga (constellation)
- Auroral light
- Australia Telescope Compact Array
- Automated Patrol Telescope
- Autumnal equinox
- Auva
- Avg. Orbital Speed
- Avior
- Axial tilt
- Axis of rotation
- Azimuth
[edit]
B
- B-type asteroid
- Baade, Walter
- Background (astronomy)
- Background radiation
- Bacon, Roger
- Bahá'í calendar
- Bahcall, John
- Bainbridge, John
- Baldwin, John
- Balthasar Behem Codex
- Banneker, Benjamin
- Barnard's star
- Barnard, Edward Emerson
- Barred spiral galaxy
- Barringer Crater
- Barsoom
- Barycenter
- Baryogenesis
- Baryonic matter
- Bayer designation
- Bayer, Johann
- Be X-ray binaries
- Be star
- Becrux
- Bedford Catalogue
- Behenian fixed stars
- Bekenstein, Jacob
- Belinda (moon)
- Bell, Jocelyn
- Bellatrix
- BeppoSAX
- Berlin Observatory
- Bernard Lovell
- Bernoulli, Jakob
- Bernoulli, Johann
- Bessel, Friedrich
- Beta Centauri
- Beta Pictoris
- Betelgeuse
- Beyond the standard Big Bang model
- Bianca (moon)
- Big Bang
- Big Bang nucleosynthesis
- Big Bear Solar Observatory
- Big Crunch
- Big Dipper
- Big Rip
- Big bang
- Binary asteroid
- Binary star
- Binary system
- Binoculars
- BL Lac object
- Black body
- Black dwarf
- Black hole
- Black hole thermodynamics
- Black holes
- Blazar
- Bliss, Nathaniel
- Blue giant
- Blue straggler
- Boötes
- Bode, Johann Elert
- Bohr model
- Bohr, Niels
- Bolometer
- Bolometric magnitude
- Bolyai, Janos
- Bondi, Hermann
- Bond, William Cranch
- Bonner Durchmusterung
- Boomerang nebula
- Boss, Lewis
- Boulder Sunspot Number
- Boötes
- Bradley, James
- Brahe, Tycho
- Brane
- Brane cosmology
- Brera Observatory
- Brett J. Gladman
- Bright nebula
- Brightness
- Broad Band X-ray Telescope
- Brocchi's Cluster
- Broglie, Louis-Victor de
- Brown dwarf
- Brown, Michael E.
- Brown, Robert Hanbury
- Bruce Medal
- Brudzewski, Albert
- Brussels Observatory
- BTA-6
- Bulge (astronomy)
- Burbidge, Geoffrey
- Burbidge, Margaret
- Bureau des Longitudes
- Butterfly Cluster
[edit]
C
- C-type asteroid
- Caelum
- Calendar Round
- Caliban (moon)
- Callisto (moon)
- Caltech Submillimeter Observatory
- Calypso (moon)
- Cambridge Interferometer
- Cambridge Low Frequency Synthesis Telescope
- Cambridge Optical Aperture Synthesis Telescope
- Camelopardalis
- Canada-France-Hawaii Telescope
- Canadian Arrow
- Canadian Space Agency
- Cancer (constellation)
- Canes Venatici
- Canis Major
- Canis Major (dwarf galaxy)
- Canis Minor
- Cannon, Annie
- Canopus
- Canopus (star)
- Capella (star)
- Capricorn
- Capricornus
- Carbon star
- Cardinal directions
- Carina (constellation)
- Carlsberg Meridian Telescope
- Carme (moon)
- Carme group
- Carpo (moon)
- Carrington, Richard
- Cartesian coordinate system
- Cartier, Pierre
- Cartography
- Cartwheel Galaxy
- Cassegrain Reflector
- Cassegrain telescope
- Cassegrain, Guillaume
- Cassini probe
- Cassini, Giovanni Domenico
- Cassini-Huygens
- Cassini-Huygens Mission
- Cassiopeia (constellation)
- Castor
- Castor (star)
- Cataclysmic variable star
- Catadioptric sensor
- Catalogue of Galaxies and of Clusters of Galaxies
- Cavalieri, Bonaventura
- Cavendish Astrophysics Group
- Ceiba
- Celestial body
- Celestial body atmosphere
- Celestial body's atmosphere
- Celestial coordinate system
- Celestial dynamics
- Celestial equator
- Celestial mechanics
- Celestial navigation
- Celestial pole
- Celestial sphere
- Celsius, Anders
- Celtes, Conrad
- Centaur
- Centaur
- Centaur rocket
- Centaurus
- Cepheid variable
- Cepheus
- Cepheus (constellation)
- Cerro Tololo telescope
- Cetus
- CfA 1.2 m Millimeter-Wave Telescope
- Chad Trujillo
- Chamaeleon
- Chandler wobble
- Chandra X-ray Observatory
- Chandra X-ray Telescope
- Chandrasekhar limit
- Chandrasekhar, Subrahmanyan
- CHARA array
- Charles T. Kowal
- Charon (moon)
- Chatelet, Emilie du
- Cherenkov Array at Themis
- Chinese constellation
- Chiron
- Chondrite
- Chondrule
- Christie, William
- Chromatic aberration
- Chromosphere
- Chrétien, Henri
- Circinus
- Circle of confusion
- Circle of latitude
- Circumpolar star
- Circumstellar disk
- Civil Year
- Clark, Alvan
- Classical mechanics
- Classical physics
- Clover telescope array and Project
- Closure phase
- CNES
- Cnidus
- CNO cycle
- Coalsack Nebula
- COBE
- Cold dark matter
- Collinder catalogue
- Collinder, Per
- Color index
- Color temperature
- Columba (constellation)
- Coma (cometary)
- Coma (optics)
- Coma (cometary)
- Coma Berenices
- Coma aberration
- Coma galaxy cluster
- Combined Array for Research in Millimeter-wave Astronomy
- Comet
- Comet Encke
- Comet Halley
- Comet Shoemaker-Levy 9
- Comet Tempel-Tuttle
- Comoving distance
- Compact object
- Compact star
- Compass
- Compton Gamma Ray Observatory
- Compton effect
- Compton scattering
- Concave
- Cone Nebula
- Conon of Samos
- Constellation
- Constellation-X
- Contact binary
- Convex
- Copernican
- Copernican heliocentric system
- Copernican principle
- Copernican revolution
- Copernicus
- Copernicus, Nicolaus
- Copley Medal
- Cordelia (moon)
- Cornelius Agrippa
- Corona
- Corona Australis
- Corona Borealis
- Coronagraph
- Coronal gas
- Corot (astronomy)
- Corvus (constellation)
- Cosmic Anisotropy Telescope
- Cosmic Background Explorer satellite
- Cosmic Background Imager
- Cosmic Background Radiation
- Cosmic background radiation
- Cosmic censorship hypothesis
- Cosmic inflation
- Cosmic microwave background
- Cosmic microwave background radiation
- Cosmic radiation
- Cosmic ray
- Cosmic ray spallation
- Cosmic rays
- Cosmogony
- Cosmological Principle
- Cosmological constant
- Cosmological principle
- Cosmological time
- Cosmology
- Cosmonaut
- Côte d'Azur Observatory
- Coudé design
- Crab Nebula
- Crater (impact)
- Crater (constellation)
- Creation of the Universe
- Cressida (moon)
- CRESU experiment
- Crisium basin
- Cryogenic Dark Matter Search
- Cubewano
- Cygnus
- Cygnus (constellation)
- Cygnus A
- Cygnus X-1
[edit]
D
- d'Alembert, Jean le Rond
- D-type asteroid
- Dactyl (asteroid)
- Damocloid
- Danjon Scale
- Danjon, André
- Daphnis
- Dark energy
- Dark matter
- Dark moon
- Dark nebula
- Darwin (ESA)
- Darwin (crater)
- Dawn --
- de Lacaille, Nicolas Louis
- De Revolutionibus Orbium Coelestium
- de Vaucouleurs, Gérard
- Debye length
- Declination
- Deep sky object
- Deferent and epicycle
- Degenerate matter
- Degree (angle)
- Deimos (moon)
- Deimos (moon)
- Delphinus
- Delphinus (constellation)
- Deneb
- Denebola
- Desdemona (moon)
- Despina (moon)
- Detached binary
- Diffraction
- Diffraction-limited
- Diffuse sky radiation
- Dingle, Herbert
- Dione (moon)
- Dirac, Paul
- Disc (galaxy)
- Dispersion (optics)
- Diurnal motion
- Dmitri Maksutov
- Dobsonian
- Dobsonian mount
- Dollfus, Audouin
- Dome C
- Doppler effect
- Doppler shift
- Dorado
- Double pendulum
- Double star
- Draco
- Draco (constellation)
- Drake equation
- Drake, Frank
- Draper, Henry
- Dreyer, John
- Drift velocity
- Dubhe
- Dumbbell Nebula
- Duncan, Robert
- Dusk
- Dust
- Dutch Open Telescope
- Dwarf elliptical galaxy
- Dwarf galaxy
- Dwarf spheroidal galaxy
- Dynamical system
- Dynamical systems and chaos theory
- Dyson, Frank
- Dyson, Freeman
[edit]
E
- E-type asteroid
- Early Imbrian
- Earth
- Earth atmosphere
- Earth impacts
- Earth's atmosphere
- Earth's magnetic field
- Earthshine
- Eccentric anomaly
- Eccentricity
- Eccentricity (orbit)
- Eclipse
- Eclipsing binary
- Ecliptic
- Ecliptic coordinate system
- Ecliptic longitude
- Eddington Medal
- Eddington limit
- Eddington luminosity
- Eddington, Arthur
- Edmund Halley
- Edward Charles Pickering
- Effelsberg
- Einstein, Albert
- Einstein Observatory
- Einstein shift
- Elara (moon)
- Eleanor F. Helin
- Electromagnetic radiation
- Electromagnetic spectrum
- Elliptic orbit
- Elliptical Galaxy M87
- Elliptical galaxy
- Elliptical orbit
- Elnath
- Elongation
- Elve
- Emission line
- Emission nebula
- Enceladus (moon)
- Encke division
- Encke, Johann Franz
- Energy density
- English equatorial mount
- Ephemeris
- Ephemeris Time
- Epimetheus (moon)
- Epoch (astronomy)
- Eponym
- EPR paradox
- Epsilon Eridani
- Epsilon Indi
- Equation of time
- Equatorial bulge
- Equatorial coordinate system
- Equatorial mount
- Equinox
- Equuleus
- Eratosthenes
- Eratosthenian
- Eridanus (constellation)
- Ernest Rutherford
- Ernst Wilhelm Leberecht Tempel
- Erriapo (moon)
- Eruptive variable
- ESA
- ESA Space Debris Telescope
- Escape velocity
- Eta Carinae
- Ethane
- Euclid
- Euclidean geometry
- Euclidean space
- Euctemon
- Eudoxus of Cnidus
- Eugenia
- Euler angles
- Euler, Leonhard
- Europa (moon)
- European Southern Observatory
- European Space Agency
- European VLBI Network
- Event horizon
- Everett many-worlds interpretation
- Everett, Hugh
- Exeligmos
- Exit pupil
- Exoplanet
- EXOSAT
- Exterrestrial intelligence
- Extragalactic astronomy
- Extrasolar planet
- Extraterrestrial life
- Extreme Universe Space Observatory
- Eyepiece
[edit]
F
- F-number
- F-type asteroid
- Fabricius, David
- Fabricius, Johannes
- Facula
- Far infrared astronomy
- Far side (Moon)
- Farthest Galaxy
- Faulkes Telescope North
- Faulkes Telescope South
- Fermi paradox
- Fermi, Enrico
- Feynman, Richard
- Field (physics)
- Field curvature aberration
- Field of view
- Finderscope
- First Point of Aries
- First Point of Libra
- First light
- FITS
- FitzGerald-Lorentz Contraction
- Five College Radio Astronomy Observatory
- Flamsteed designation
- Flamsteed, John
- Flare star
- Flat earth
- Flatness problem
- Flux
- Focal length
- Focal plane
- Focus
- Fomalhaut
- Forbidden line
- Fork mount
- Fornax
- Fountain, John
- Four-vector
- Fowler, William
- Frame of reference
- François Arago
- François Jean Dominique Arago
- Frederick de Houtman
- Friedmann equations
- Friedmann-Lemaître-Robertson-Walker
- Friedrich Karl Arnold Schwassmann
- Friedrich Wilhelm Bessel
- Full moon
- Full moon cycle
- Full-sky Astrometric Mapping Explorer
- Fundamental plane
- Furud
[edit]
G
- Gérard de Vaucouleurs
- G-type asteroid
- Gacrux
- Gaia probe
- Galactic astronomy
- Galactic bulge
- Galactic cluster
- Galactic coordinate system
- Galactic corona
- Galactic cosmic ray
- Galactic disk
- Galactic halo
- Galactic plane
- Galatea (moon)
- Galaxies
- Galaxy
- Galaxy Abell 1835 IR1916
- Galaxy classification
- Galaxy cluster
- Galaxy disk
- Galaxy formation and evolution
- Galaxy morphology
- Galaxy nucleus
- Galaxy rotation problem
- GALEX
- Galilean moons
- Galilean transformation
- Galileo Galilei
- Galileo probe
- Galileo spacecraft
- Galle, Johann Gottfried
- Gamma ray burst
- Gamma ray burster
- Gamma-ray Large Area Space Telescope
- Gamma-ray astronomy
- Gamow, George
- Ganymede (moon)
- Ganymede (moon)
- Gas giant
- Gassendi
- Gassendi crater
- Gathmann, Louis
- Gauss, Carl Friedrich
- Gaussian gravitational constant
- Gegenschein
- Geller, Margaret
- Gemini
- Gemini Observatory
- Geminids
- General Catalogue of Trigonometric Parallaxes
- General Relativity
- General theory of relativity
- Geocentric
- Geocentric model
- Geocentric universe
- Geodesic
- Geoid
- Geomagnetic storm
- George Gabriel Stokes
- Georges Lemaître
- Geostationary orbit
- German equatorial mount
- Giacconi, Riccardo
- Giant (star)
- Giant Magellan Telescope
- Giant Meterwave Radio Telescope (GMRT)
- Giant impact theory
- Giant molecular cloud
- Giant star
- Giovanni Battista Riccioli
- GJ 1061
- Gliese 876
- Gliese, Wilhelm
- Gliese-Jahreiss catalogue
- Globular cluster
- Goddard Space Flight Center
- Gold Medal of the Royal Astronomical Society
- Gold, Thomas
- Goldstone Deep Space Communications Complex
- Goldstone Radio Telescope
- Goodman-Martínez-Thompson correlation
- Gottfried Leibniz
- Gran Telescopio Canarias
- Grand Interferometre a 2 Telescopes
- Grand unification epoch
- Grand unification theory
- Gravitation
- Gravitational binding energy
- Gravitational collapse
- Gravitational constant
- Gravitational field
- Gravitational force
- Gravitational instability
- Gravitational lens
- Gravitational lensing
- Gravitational micro-lensing
- Gravitational redshift
- Gravitational singularity
- Gravitational slingshot
- Gravitational wave
- Gravitational waves
- Graviton
- Gravity
- Gravity wave
- Great Attractor
- Great Observatories program
- Great Red Spot
- Great Wall (astronomy)
- Great circle
- Green Bank Telescope
- Greenwich
- Greenwich Mean Time
- Gregorian telescope
- Gregory, James
- Greisen-Zatsepin-Kuzmin limit
- Grigoriy N. Neujmin
- Groombridge 1830
- Groups and clusters of galaxies
- GRS80
- Grus
- Grus (constellation)
- Guldin
- Guth, Alan
[edit]
H
- H II region
- H-R diagram
- H-alpha
- Hadar
- Haemus, Montes
- HALCA
- Hale telescope
- Hale, George Ellery
- Half-Mile Telescope
- Hall, Asaph
- Halley, Edmond
- Halo (optical phenomenon)
- Hamal
- Hamilton, William Rowan
- Hannes Olof Gösta Alfvén
- Hans Bethe
- Harvard College Observatory
- Harvard Revised catalogue
- Haverah Park experiment
- Hawking radiation
- Hawking, Stephen
- HD 209458b
- HE0107-5240
- Heat death
- Heat-death of the Universe
- HEGRA
- Heka
- Helen B. Warner Prize for Astronomy
- Helene (moon)
- Heliacal rising
- Heliocentric
- Heliocentric model
- Heliocentrism
- Heliopause
- Helios
- Helioseismology
- Heliosphere
- Helium flash
- Helix Nebula
- Hemisphere
- Henri Poincaré
- Henry Draper Catalogue
- Henry Draper Medal
- Henry E. Holt
- Henry Norris Russell Lectureship
- Herakles
- Herbig-Haro object
- Hercules (constellation)
- Hercules Globular Cluster
- Herman of Carinthia
- Hermann Mayer Salomon Goldschmidt
- Hermann von Helmholtz
- Herschel Space Observatory
- Herschel, Caroline
- Herschel, John
- Herschel, William
- Hertzsprung, Ejnar
- Hertzsprung-Russell diagram
- Hesiod
- Hevelius, Johannes
- Hewish Antony
- High Energy Transient Explorer
- High Resolution Fly's Eye Cosmic Ray Detector
- High-energy astronomy
- High-mass X-ray binaries
- Hilbert space
- Himalia (moon)
- Himalia group
- Hipparchus
- Hipparcos
- Hipparcos Catalogue
- Hipparcos catalogue
- History of astronomical interferometry
- History of astronomy
- History of telescopes
- Hoag's object
- Hobby-Eberly Telescope
- Hooker Telescope
- Horace Parnell Tuttle
- Horizon
- Horizon problem
- Horizontal branch
- Horizontal coordinate system
- Horn (telescope)
- Horologium
- Horoscope
- Horrendous Space Kablooie
- Horrocks, Jeremiah
- Horsehead Nebula
- Hot dark matter
- Hour angle
- Hourglass Nebula
- Houtermans, Fritz
- Hoyle, Fred
- Hubble Deep Field
- Hubble Law
- Hubble Nebula
- Hubble Origins Probe
- Hubble Space Telescope
- Hubble constant
- Hubble flow
- Hubble sequence
- Hubble's Law
- Hubble, Edwin
- Huchra, John
- Huggins, William
- Hulse, Russell
- Humason, Milton
- Huygens Region
- Huygens probe
- Huygens, Christiaan
- Hyades (star cluster)
- Hydra (constellation)
- Hydrus
- Hypergalaxy
- Hyperion (moon)
- Hypernova
- Hyperon
- Hypothetical planet
[edit]
I
- Iapetus (moon)
- IAU
- Icy moon
- Ijiraq (moon)
- Imbrian
- Immanuel Kant
- Impact basin
- Impact event
- Inclination
- Indigo
- Inductance
- Indus (constellation)
- Inex
- Inferior and superior planets
- Inferior planet
- Inflationary epoch
- Infrared Optical Telescope Array
- Infrared Space Observatory
- Infrared astronomy
- Inner satellites of Jupiter
- Institute of Astronomy, Cambridge
- Instituto de Astrofísica de Canarias
- INTEGRAL
- Integrated Sachs Wolfe effect
- Intensity
- Intensity interferometer
- Interacting binary stars
- Intercalary day
- Intercalary month
- Intercalation
- Interferometer
- Interferometer telescope
- Interferometry
- Intergalactic medium
- International Astronomical Union
- International Atomic Time
- International Earth Rotation and Reference Systems Service
- International Space Station
- International Star Registry
- International Sunspot Number
- Interplanetary Scintillation Array
- Interstellar cloud
- Interstellar dust
- Interstellar medium
- Introduction to Geomagnetically Trapped Radiation
- Io (moon)
- Ionosphere
- IPCC
- IRAF
- IRAS
- Irregular galaxy
- Irregular variable
- Isa, Ali Ben
- Isaac Newton Telescope
- Isolated singularity
- Italian Space Agency
- Ithaca Chasma
[edit]
J
- J2000
- J2000.0
- Jacobus Kapteyn Telescope
- Jahreiss, Hartmut
- James Clerk Maxwell
- James Clerk Maxwell Telescope
- James Webb Space Telescope
- Jansky
- Jansky, Karl Guthe
- Janus (moon)
- Jeans, James
- Jennison, Roger Clifton
- Jet Propulsion Laboratory
- Jodrell Bank
- Jodrell Bank Observatory
- Johannesburg Observatory
- Jones, Harold
- Jovian planet
- Julian Calendar
- Julian date
- Julian day
- Julian epoch
- Julian year (astronomy)
- Juliet (moon)
- Jupiter (planet)
- Jupiter's natural satellites
- Jyotish
[edit]
K
- K-type asteroid
- Kabbalistic
- Kaluza-Klein theory
- Kamacite
- Kapteyn's Star
- Kapteyn, Jacobus
- Kavelaars, John J.
- Keck Interferometer
- Keck Observatory
- Keck telescopes
- Keeler, James Edward
- Kelvin-Helmholtz mechanism
- Kenneth S. Russell
- Kepler's laws of planetary motion
- Kepler, Johannes
- Keplerian harmonic law
- Khayyám, Omar