- Sun
- Planetary system
- Planets
- Mercury
- Venus
- Earth
- Mars
- Jupiter
- Saturn
- Uranus
- Neptune
- Pluto
- Asteroids
- "Vulcanoids"
- "Apoheles"
- Near-Earth asteroids
- "Arjunas"
- Atens
- Apollos
- Amors
- Mars-crossers
- Asteroid belt
- Hungarias
- Phocaeas
- Nysas
- Alindas
- Hildas
- Pallas
- Marias
- Koronis
- Eos
- Themis
- Griquas
- Cybeles
- Thule
- Trojan asteroids
- Mars trojans
- Jupiter trojans
- Neptune trojans
- Outer planet crossers
- Damocloids
- Centaurs
- Trans-Neptunian objects
- Kuiper Belt
- Plutinos
- Cubewanos
- Twotinos
- Scattered Disk Objects
- Comets
- Periodic comets
- Long-period comets
- Lost comets
- Oort cloud
- Meteoroids
| - Exoplanets
- Very hot Jupiters
- Hot Jupiters
- Eccentric Jupiters
- Pulsar planets
- Hot Neptunes / Super-Earths
- Transiting planets
- Rogue / Interstellar planets
- Hypothetical planet types
- Chthonian planets
- Oceanic planets
- Trojan planets
- Brown dwarfs
- Lithium dwarfs
- Methane dwarfs
- Sub-brown dwarfs
- Stars by spectral type
- Blue stars
- Blue-white stars
- White stars
- Yellow-white stars
- Yellow stars
- Orange stars
- Red stars
- Peculiar stars
- Carbon stars
- C-type stars
- S-type stars
- Shell stars
- Wolf-Rayet stars
- Peculiar A-type stars
- Metallic A-type stars
- Barium stars
- P Cygni stars
- Blue stragglers
- Stars by luminosity class
- Subdwarf stars
- Dwarf (Main sequence) stars
- Subgiant stars
- Giant stars
- Bright giant stars
- Supergiant stars
- Hypergiant stars
- Stars by population
- Population III stars
- Population II stars
- Halo stars
- Thick disk stars
- Population I stars
- Stars by stellar evolution
- Protostars
- Young stellar objects
- Main sequence stars
- Red giant stars
- Red supergiant stars
- Blue supergiant stars
- Wolf-Rayet stars
- White dwarf stars
- Neutron stars
- Variable stars
- Intrinsic variables
- Pulsating variables
- Cepheid variables
- W Virginis variables
- Delta Scuti variables
- RR Lyrae variables
- Mira variables
- Semiregular variables
- Irregular variables
- Beta Cephei variables
- Alpha Cygni variables
- RV Tauri variables
- Eruptive variables
- Flare stars
- T Tauri variables
- FU Orionis variables
- R Coronae Borealis variables
- Luminous blue variables
- Cataclysmic variables
- Symbiotic variables
- Dwarf novae
- Novae
- Supernovae
- Type I supernovae
- Type II supernovae
- Gamma ray bursts
- Long GRBs
- Short GRBs
- Dark GRBs
- Extrinsic variables
- Rotating variables
- Alpha2 CVn stars
- Rotating ellipsoidal variables
- Eclipsing binaries
- Algol stars
- Beta Lyrae stars
- W Ursae Majoris stars
- Compact stars
- White dwarfs
- Neutron stars
- Strange stars
- Black holes
- Supermassive black holes
| - Planetary systems
- Star systems
- Single star systems
- Multiple star systems
- Binary stars
- Optical binaries
- Visual binaries
- Astrometric binaries
- Spectroscopic binaries
- Eclipsing binaries
- Close binaries
- Detached binaries
- Semidetached binaries
- Contact binaries
- Unresolved binaries
- X-ray bursters
- Triple star systems
- Stellar groupings
- Star clusters
- Stellar associations
- Open clusters
- Globular clusters
- Constellations
- Asterisms
- Galaxy components
- Galactic bulges
- Galactic rings
- Spiral arms
- Thin disks
- Thick disks
- Galactic halos
- Galactic coronae
- Galaxies
- Galaxies by morphology
- Spiral galaxies
- Barred spiral galaxies
- Lenticular galaxies
- Elliptical galaxies
- Ring galaxies
- Irregular galaxies
- Galaxies by size
- Giant diffuse galaxies
- Giant ellipticals
- Dwarf galaxies
- Ultracompact dwarfs
- Active galaxies
- Quasars
- Radio galaxies
- Seyfert galaxies
- Starburst galaxies
- Dark galaxies
- Galaxy clusters
- Galaxy cluster clouds
- Superclusters
- Filaments / Voids
| - Circumstellar matter
- Dust disks
- Interplanetary medium
- Protoplanetary disks
- Interstellar medium
- Nebulae
- Emission nebulae
- Planetary nebulae
- Supernova remnants
- Plerions
- H II regions
- Reflection nebulae
- Dark nebulae
- Molecular clouds
- Bok globules
- Proplyds
- H I regions
- Intergalactic medium
- Cosmic microwave background radiation
- Dark matter
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