Vital articles is a list of subjects for which Wikipedia should have corresponding high-quality articles. It serves as a centralized watchlist to track the status of Wikipedia's most essential articles. This is one of the sub-lists of the fifty thousand article Vital articles/Level 5 and is currently under construction.
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Total articles: 892/900
For astronomical instruments, see the Astronomical technology (Level 5) section
Astronomy basics (36 articles)
Astronomy (Level 2)
Astronomical object (Level 4)
Astrophysics (Level 4)
Astronomer
Astrobiology
Astrochemistry
Cosmology
Space physics
Theoretical astronomy
Computational astrophysics
Gravitational-wave astronomy
Neutrino astronomy
Time-domain astronomy
Night sky
Amateur astronomy
Space weather
Databases (4 articles)
Surveys and Catalogs (5 articles)
Observational astronomy (49 articles)
Basics (36 articles)
Observatory (Level 4)
Luminosity (Level 4)
Magnitude (Level 4)
Extinction (Level 4)
Effective temperature
Light curve
Photometry (Level 4)
Cosmic distance ladder (Level 4)
Astrometry (Level 4)
Polarization in astronomy
Astronomical spectroscopy
Infrared astronomy
Visible-light astronomy
Airmass
Astronomical seeing
Twinkling
Luminosity distance
Recessional velocity
Spectral energy distribution
Surface brightness
Angular resolution
Angular diameter
Bortle scale
Radio astronomy (8 articles)
Radio astronomy
Submillimetre astronomy
Astronomical radio source
Astrophysical maser
Brightness temperature
Spectral index
High-energy astronomy (5 articles)
Astronomical objects (302 articles)
Solar System (125 articles)
Solar System (Level 2)
Sun (Level 2)
Mercury (Level 3)
Venus (Level 3)
Earth (Level 1)
Moon (Level 2)
Mars (Level 3)
Asteroid belt (Level 4)
Jupiter (Level 3)
Saturn (Level 3)
Uranus (Level 3)
Neptune (Level 3)
Trans-Neptunian object
Kuiper belt (Level 4)
Scattered disc
Oort cloud (Level 4)
Planets beyond Neptune
Notable comets (6 articles)
Halley's Comet (Level 4)
Comet Hyakutake
Comet Hale–Bopp
Comet Shoemaker–Levy 9
2060 Chiron
Kreutz sungrazer
Notable stars (47 articles)
Achernar
Aldebaran
Algol
Alpha Centauri (Level 4)
Acrux
Altair
Antares
Arcturus (Level 4)
Barnard's Star
Beta Centauri
Beta Pictoris
Betelgeuse (Level 4)
Canopus (Level 4)
Capella (Level 4)
Castor
Crab Pulsar
CW Leonis
Cygnus X-1 (Level 4)
Deneb
Epsilon Canis Majoris
Epsilon Eridani
Eta Carinae
Fomalhaut
Gamma Cassiopeiae
LBV 1806−20
Mimosa
Mira
Polaris (Level 4)
Pi Puppis
Pollux
Procyon (Level 4)
PSR B1937+21
Regulus
Rigel (Level 4)
Scorpius X-1
Sirius (Level 4)
Spica
Stephenson 2-18
Tau Ceti
TRAPPIST-1
TW Hydrae
UY Scuti
Vega (Level 4)
VY Canis Majoris
WISE 0855−0714
Zeta Ophiuchi
Notable exoplanets (11 articles)
51 Pegasi b
55 Cancri e
Gliese 581d
HD 189733 b
HD 209458 b
K2-18b
Kepler-22b
Kepler-186f
Kepler-442b
Kepler-452b
Proxima Centauri b
Milky Way (10 articles)
Milky Way (Level 3)
Galactic Center (Level 4)
Carina–Sagittarius Arm
Norma Arm
Orion Arm
Perseus Arm
Scutum–Centaurus Arm
Notable galaxies (37 articles)
Local Group (Level 4)
3C 273 (Level 4)
Antennae Galaxies
Arp 220
BL Lacertae
Cartwheel Galaxy
Centaurus A (Level 4)
Cygnus A
Hoag's Object
IC 1101
Markarian 231
Markarian 421
Markarian 501
Messier 49
Messier 77
Messier 81
Messier 82
Messier 83
Messier 87 (Level 4)
Messier 106
NGC 1275
NGC 4151
NGC 4945
NGC 5548
NGC 6946
Pinwheel Galaxy (Level 4)
Sculptor Galaxy
Sombrero Galaxy
Whirlpool Galaxy (Level 4)
Notable nebulae (21 articles)
Carina Nebula (Level 4)
Cassiopeia A
Cat's Eye Nebula
Coalsack Nebula
Crab Nebula (Level 4)
Cygnus Loop
Dumbbell Nebula
Eagle Nebula (Level 4)
Horsehead Nebula (Level 4)
Lagoon Nebula
NGC 6302
NGC 7027
Omega Nebula
Orion Nebula (Level 4)
Rho Ophiuchi cloud complex
Ring Nebula (Level 4)
Rosette Nebula
Sagittarius B2
Tarantula Nebula
Trifid Nebula
Westerhout 40
Notable star clusters (13 articles)
47 Tucanae
Beehive Cluster
Brocchi's Cluster
Hyades (Level 4)
Messier 4
Messier 7
Messier 13
Messier 15
Messier 22
Omega Centauri (Level 4)
Pleiades (Level 4)
R136
Trapezium Cluster
Notable galaxy clusters (14 articles)
Virgo Supercluster (Level 4)
Laniakea Supercluster
Centaurus A/M83 Group
Coma Cluster
Fornax Cluster
IC 342/Maffei Group
M81 Group
Perseus Cluster
Great Attractor (Level 4)
Bullet Cluster
Shapley Supercluster
Pisces–Cetus Supercluster Complex
Local Sheet
Notable transient events (6 articles)
Notable patches of universe (14 articles)
Local Bubble
Hubble Deep Field
Hubble Ultra-Deep Field
KBC Void
Zone of Avoidance
Boötes Void
CMB cold spot
Local Void
Giant Void
South Pole Wall
Huge-LQG
BOSS Great Wall
Other notable objects (4 articles)
Celestial mechanics (73 articles)
Celestial mechanics (Level 4)
Orbit (Level 3)
Eclipse (Level 4)
Transit
Kepler's laws of planetary motion (Level 4)
Lagrange point (Level 4)
Libration
Sidereal time
Lunar phase
Apsis
Gravitational collapse
Axial precession
Accretion
Velocity dispersion
Roche limit
Tidal acceleration
Orbital mechanics (21 articles)
Celestial sphere (122 articles)
General (29 articles)
Celestial sphere (Level 4)
Celestial cartography
Constellation (Level 4)
Asterism (astronomy)
Spherical astronomy
Epoch
Astronomical coordinate systems (Level 4)
Chinese star names
Equinox (Level 4)
Ecliptic (Level 4)
Horizon (Level 4)
Solstice (Level 4)
Hour angle
Position angle
Meridian
Nadir
Zenith
Celestial equator
Tropical year
Zodiac (Level 4)
Asterism (5 articles)
Constellations (88 articles)
Zodiac (12 articles)
Other (76 articles)
Andromeda
Antlia
Apus
Aquila
Ara
Auriga
Boötes
Caelum
Camelopardalis
Canes Venatici
Canis Major (Level 4)
Canis Minor
Carina
Cassiopeia (Level 4)
Centaurus (Level 4)
Cepheus
Cetus
Chamaeleon
Circinus
Columba
Coma Berenices
Corona Australis
Corona Borealis
Corvus
Crater
Crux (Level 4)
Cygnus
Delphinus
Dorado
Draco
Equuleus
Eridanus
Fornax
Grus
Hercules
Horologium
Hydra
Hydrus
Indus
Lacerta
Leo Minor
Lepus
Lupus
Lynx
Lyra
Mensa
Microscopium
Monoceros
Musca
Norma
Octans
Ophiuchus
Orion (Level 4)
Pavo
Pegasus
Perseus
Phoenix
Pictor
Piscis Austrinus
Puppis
Pyxis
Reticulum
Sagitta
Sculptor
Scutum
Serpens
Sextans
Telescopium
Triangulum
Triangulum Australe
Tucana
Ursa Major (Level 4)
Ursa Minor (Level 4)
Vela
Volans
Vulpecula
Planetary science (50 articles)
Planetary science
Planet (Level 3)
Atmosphere (Level 4)
Magnetosphere
Ring system (Level 4)
Minor planet (Level 4)
Natural satellite (Level 3)
Comet (Level 3)
Meteoroid (Level 4)
Impact event (Level 4)
Trojan
Centaur
Axial tilt
Planetary differentiation
Planetary habitability
Planetesimal
Protoplanet
Albedo (Level 4)
Methods of detecting exoplanets
Planetary core
Planetary mass
Stellar astronomy (118 articles)
Star (Level 3)
Variable star (Level 4)
Star system (Level 4)
Star cluster (Level 4)
Compact star
Intergalactic star
Stellar classification (Level 4)
Stellar evolution (Level 4)
Star formation (Level 4)
Stellar kinematics (Level 4)
Stellar magnetic field (Level 4)
Stellar nucleosynthesis
Stellar structure (Level 4)
Stellar rotation
Stellar mass
Stellar wind
Metallicity (Level 4)
Circumstellar disc
Brown dwarf (Level 4)
Hertzsprung–Russell diagram (Level 4)
Double star
Protoplanetary nebula
Planetary nebula (Level 4)
Supernova (Level 3)
Gamma-ray burst (Level 4)
Fast radio burst
Kilonova
Asteroseismology
Mass–luminosity relation
Galactic and extragalactic astronomy (89 articles)
Basics (53 articles)
Galactic astronomy
Extragalactic astronomy
Outer space (Level 3)
Galaxy (Level 3)
Cosmic dust
Black hole (Level 3)
Interstellar medium (Level 4)
High-velocity cloud
Cosmic ray (Level 4)
Galactic plane
Galactic bulge
Galaxy rotation curve
Galactic halo
Interacting galaxy
Satellite galaxy
Galaxy groups and clusters (Level 4)
Gravitational lens
Intergalactic dust
Warm–hot intergalactic medium
Field galaxy
Dark flow
Wormhole
Large-scale structures (2 articles)
Galaxy classification (24 articles)
Galaxy morphological classification (Level 4)
Hubble sequence
Spiral galaxy (Level 4)
Elliptical galaxy (Level 4)
Lenticular galaxy (Level 4)
Irregular galaxy (Level 4)
Dwarf galaxy (Level 4)
Dark galaxy
Brightest cluster galaxy
Ring galaxy
Low surface brightness galaxy
Peculiar galaxy
Lyman-alpha emitter
Active galactic nucleus (10 articles)
Physical cosmology (53 articles)
Physical cosmology (Level 3)
Universe (Level 2)
Chronology of the universe (Level 4)
Structure formation
Shape of the universe
Ultimate fate of the universe (Level 4)
Cosmic microwave background (Level 4)
Big Bang nucleosynthesis
Baryogenesis
Expansion of the universe
Baryon acoustic oscillations
Primordial fluctuations
Dark matter (Level 4)
Dark energy (Level 4)
Redshift (Level 4)
Comoving and proper distances
Anthropic principle
Flatness problem
Horizon problem
Steady-state model
Multiverse