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 do update the page accordingly.

Three astronomy related WikiProjects are being developed, please visit WikiProject Astronomical Objects, WikiProject Constellations, and WikiProject Telescopes.

0-9

1 Ceres -- 2 Pallas -- 3C9 -- 3C48 -- 3C191 -- 3C273 -- 3 Juno -- 4 Vesta -- 10 Hygiea -- 14 Herculi -- 15 Eunomia -- 16 Cygni -- 16 Psyche -- 21 Lutetia -- 24 Themis -- 31 Euphrosyne -- 34 Tauri -- 45 Eugenia -- 47 Ursae Majoris -- 48 Doris -- 51 Pegasi -- 52 Europa -- 55 Cancri -- 61 Cygni -- 61 Cygni A -- 61 Cygni B -- 65 Cybele -- 70 Virginis -- 71 Niobe -- 87 Sylvia -- 90 Antiope -- 92 Undina -- 94 Aurora -- 95 Arethusa -- 106 Dione -- 110 Lydia -- 154 Bertha -- 221 Eos -- 243 Ida -- 253 Mathilde -- 324 Bamberga -- 433 Eros -- 451 Patientia -- 511 Davida -- 588 Achilles -- 624 Hektor -- 674 Rachele -- 704 Interamnia -- 944 Hidalgo -- 951 Gaspra -- 1221 Amor -- 1566 Icarus -- 1620 Geographos -- 1685 Toro -- 1862 Apollo -- 2004 AS1 -- 2060 Chiron -- 2062 Aten -- 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 --

A

A New Theory of Magnetic Storms -- A-type asteroid -- Aaronson, Marc -- Abdulmelik, Chalid Ben -- Abell, George Ogden -- Galaxy Abell 1835 IR1916 -- Abell 2142 -- Aberration in optical systems -- Aberration of light -- Absolute date -- Absolute magnitude -- Absorption line -- Accelerating universe -- Acceleration -- Accretion disk -- Achernar -- Achondrites -- Achromatic lens -- Achromatic doublet -- Acrux -- Active Galactic Nuclei -- Active galaxy -- Active optics -- Adams, John Couch -- Adaptive optics -- Adara -- Adelard of Bath -- Adhara -- Adler Planetarium -- Adrastea -- Aether theory -- Afterglow -- Age of the Earth -- Age of the Universe -- Airglow -- Airy disc -- Airy, George -- Aitken, Robert -- Al-Batani -- Albategnius -- Albedo -- Albireo -- Alcor -- Aldebaran -- Aldhelm, Bishop of Sherborne -- d'Alembert, Jean le Rond -- Alfonsine tables -- Alfonso X of Castile -- Alfvén, Hannes Olof Gösta -- Alfven universe -- Algieba -- Algol -- ALH84001 -- Alioth -- Alkaid -- Al-Khwarizmi -- Allegheny Observatory -- Almach -- Almagest -- Alnilam -- Alnitak -- Alniyat -- Alpha Centauri -- Alpha Centauri B -- Alpha particle -- Alpha Persei -- Alpha process -- Alpher-Bethe-Gamow theory -- Alpheratz -- Alphonsine tables -- Al Sufi -- Al Sufi, 'Abd Al-Rahman -- Altair -- Altazimuth mount -- Altitude -- Aludra -- Alura -- Amalthea (moon) -- Amateur astronomy -- Amateur telescope making -- American Astronomical Society -- American Nebula -- Amor asteroid -- Amort, Eusebius -- Amplitude -- Ananke (moon) -- Analemma -- Anaximander -- Andromeda (constellation) -- Andromeda Galaxy -- Andronicus of Cyrrhus -- Angle -- Angular diameter -- Angular diameter distance -- Angular frequency -- Angular measurement -- Angular momentum -- Angular resolution -- Angular velocity -- Anomalistic month -- Anomalistic year -- Anomalous cosmic ray -- Anomalous phenomenon -- Anomalous X-ray pulsar -- Anomaly (astronomy) -- Anorthosite -- Antares -- Antarctic Circle -- Anthropic principle -- Antlia -- Antikythera mechanism -- Apastron -- Aperture -- Aperture synthesis -- Apoapsis -- Apollo asteroid -- Apparent magnitude -- Apparent motion -- Apparent solar day -- Apparition -- Apsides -- Apus -- Aquarius -- Aquila -- Ara -- Arago, Dominique -- Arago, François Jean Dominique -- Aratus -- Archaeoastronomy -- Arcminute -- Arcsecond -- Arctic Circle -- Arcturus -- Area -- Arecibo Observatory -- Arecibo radio telescope -- Argo Navis -- Ariel -- Aries -- Aristarchus -- Aristotle -- Arjuna -- Armillary sphere -- Arp, Halton -- Arrhenius, Svante -- Artemova, Ioulia Vladimirovna -- Asterism -- Asteroid -- Asteroid belt -- Asteroid deflection strategies -- Asteroid moon -- Asteroseismology -- Astigmatism -- Aston, Francis William -- Astrobiology -- Astrochemistry -- Astrolabe -- Astrologer -- Astrology -- Astrometric binary -- Astrometry -- Astronaut -- Astronautics -- Astronomer -- Astronomer Royal -- Astronomical aberration -- Astronomical body -- Astronomical conjunction -- Astronomical distance -- Astronomical Journal -- Astronomical Julian calendar -- Astronomical object -- Astronomical objects named after people -- Astronomical society -- Astronomical Society of the Pacific -- Astronomical unit -- Astronomical year numbering -- Astronomy -- Astronomy and astrophysics -- Astrophotography -- Astrophysical Journal -- Astrophysics -- Astrophysics Data System -- Asymptotic Giant Branch -- Aten -- Atkinson, Robert -- Atmosphere -- Atom -- Atomic clock -- Atomic nucleus -- Atlas (moon) -- Atria -- Aura -- Auriga (constellation) -- Auroral light -- Autumn -- Autumnal equinox -- Auva -- Avior -- Axial tilt -- Axis -- Azimuth -- Aztec calendar

B

B-type asteroid -- Baade, Walter -- Babylonian and Assyrian religion -- Babylonian literature and science -- Background (astronomy) -- Background radiation -- Bacon, Roger -- Bahai calendar -- Bahcall, John -- Bainbridge, John -- Balthasar Behem Codex -- Barred spiral galaxy -- Barycenter -- Banneker, Benjamin -- Barnard's star -- Barnard, Edward Emerson -- Barsoom -- Baryon -- Baryonic matter -- Bayer designation -- Bayer, Johann -- Be star -- Be X-ray binaries -- Becrux -- Bedford Catalogue -- Bekenstein, Jacob -- Bell, Jocelyn -- Bellatrix -- Belinda (moon) -- BeppoSAX -- Berlin Observatory -- 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 -- Binary star -- Binary system -- BL Lac object -- Black body -- Black hole -- Black hole thermodynamics -- Blazar -- Bliss, Nathaniel -- Blue giant -- Blue straggler -- Bode, Johann Elert -- Bohr, Niels -- Bolometer -- Bolometric magnitude -- Bolyai, Janos -- Bond, William Cranch -- Boomerang nebula -- Boötes -- Boss, Lewis -- Boulder Sunspot Number -- Bradley, James -- Brahe, Tycho -- Brane -- von Braun, Wernher -- Brera Observatory -- Bright nebula -- Brocchi's Cluster -- Broglie, Louis-Victor de -- Brown dwarf -- Bruce Medal -- Brudzewski, Albert -- Brussels Observatory -- Burbidge, Geoffrey -- Burbidge, Margaret -- Bureau des Longitudes -- Burnham, Robert, Jr. Butterfly Cluster --

C

C-type asteroid -- Caelum -- Calendar -- Calendar Round -- Caliban (moon) -- Callisto (moon) -- Calypso (moon) -- Camelopardalis -- Canada-France-Hawaii telescopes -- Canadian Arrow -- Canadian Space Agency -- Cancer (constellation) -- Canes Venatici -- Canis Major -- Canis Major (dwarf galaxy) -- Canis Minor -- Cannon, Annie -- Canopus -- Capella (star) -- Capricornus -- Carbon -- Carbon star -- Carbonaceous chondrite -- Cardinal directions -- Carina -- Carme -- Carrington, Richard -- Cartesian coordinate system -- Cartier, Pierre -- Cartwheel Galaxy -- Cassegrain, Guillaume -- Cassegrain telescope -- Cassini probe -- Cassini, Giovanni Domenico -- Cassiopeia -- Castor -- Cataclysmic variable star -- Catalogue of Galaxies and of Clusters of Galaxies -- Cavalieri, Bonaventura -- Ceiba -- Centaurus -- Celestial body atmosphere -- Celestial coordinate system -- Celestial dynamics -- Celestial equator -- Celestial mechanics -- Celestial navigation -- Celestial pole -- Celestial sphere -- Celsius, Anders -- Celtes, Conrad -- Centaur -- Centaur rocket -- Cepheid variable -- Cepheus -- Cerro Tololo telescope -- Cetus -- Chamaeleon -- Chandler wobble -- Chandra X-ray Observatory -- Chandra X-ray Telescope -- Chandrasekhar limit -- Chandrasekhar, Subrahmanyan -- Charge -- Charge-coupled device -- Charon (moon) -- Chatelet, Emilie du -- Chinese calendar -- Chinese constellation -- Chiron -- Chondrites -- Chrétien, Henri -- Christie, William -- Chromatic aberration -- Chromosphere -- Circinus -- Circle -- Circle of confusion -- Circle of latitude -- Circumference -- Circumpolar star -- Circumstellar disk -- Civil Year -- Clark, Alvan -- Classical mechanics -- Climate change -- Cnidus -- CNO cycle -- Coalsack Nebula -- COBE -- Cobalt -- Cold dark matter -- Collinder, Per -- Collinder catalogue -- Color -- Color (disambiguation) -- Color temperature -- Columba (constellation) -- Coma (cometary) -- Coma aberration -- Coma Berenices -- Comet -- Comet Encke -- Comet Halley -- Comet Shoemaker-Levy 9 -- Comet Tempel-Tuttle -- Common Era -- Comoving distance -- Compact object -- Compact star -- Compton Gamma Ray Observatory -- Compton effect -- Compton scattering -- Cone Nebula -- Conon of Samos -- Constellation -- Contact binary -- Coordinate grid -- Coordinate system -- Coordinated Universal Time -- Copenhagen interpretation -- Copernican -- Copernican heliocentric system -- Copernican principle -- Copernican revolution -- Copernicus, Nicolaus -- Coptic calendar -- Cordelia (moon) -- Coriolis effect -- Corona -- Corona Australis -- Corona Borealis -- Coronal gas -- Coronagraph -- Corvus (constellation) -- Cosmic Background Explorer satellite -- Cosmic Background Radiation -- Cosmic censorship hypothesis -- Cosmic inflation -- Cosmic microwave background radiation -- Cosmic radiation -- Cosmic ray -- Cosmic ray spallation -- Cosmogony -- Cosmological constant -- Cosmological Principle -- Cosmological time -- Cosmology -- Cosmonaut -- Côte d'Azur Observatory -- Coudé design -- Crab Nebula -- Crater (constellation) -- Crater -- Creation of the Universe -- Cressida (moon) -- CRESU experiment -- Crisium basin -- Crux -- Cubewano -- Culmination -- Curvature -- Cygnus -- Cygnus A -- Cygnus X-1

D

D-type asteroid -- Dactyl (asteroid) -- Danjon, André -- Danjon Scale -- Dark energy -- Dark matter -- Dark moon -- Dark nebula -- Darwin crater -- Date -- Dawn -- Day -- Declination -- Deep sky object -- Deferent and epicycle -- Degenerate matter -- Deimos (moon) -- de Lacaille, Nicolas Louis -- de Vaucouleurs, Gérard -- Delphinus -- Deneb -- Denebola -- Desdemona (moon) -- Despina (moon) -- Detached binary -- Diameter -- Diffraction-limited -- Diffuse sky radiation -- Dimension -- Dingle, Herbert -- Dione (moon) -- Dirac, Paul -- Dispersion -- Dispersion (optics) -- Distance -- Diurnal motion -- Dobsonian mount -- Dollfus, Audouin -- Doppler effect -- Dorado -- Double pendulum -- Double star -- Draco -- Drake equation -- Drake, Frank -- Draper, Henry -- Dreyer, John -- Drift velocity -- Dubhe -- Dumbbell Nebula -- Duncan, Robert -- Dusk -- Dwarf elliptical galaxy -- Dwarf galaxy -- Dwarf spheroidal galaxy -- Dynamical system