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astronomical object type
Instances
gamma-ray source
astronomical object type
Dark nebula
Type of interstellar cloud that obscures visible light
Quasar
Active galactic nucleus (AGN) containing a supermassive black hole
Blazar
Very compact quasi-stellar radio source
infrared source
astronomical object that produces infrared light
Regular moon
Satellites that formed around their parent planet
Planetary-mass moon
Planetary-mass bodies that are also natural satellites
planetary moon
natural satellite orbiting a planetary object
Earth analog
Planet with environment similar to Earth's
Galaxy groups and clusters
Largest known gravitationally bound object in universe; aggregation of galaxies
Exoplanet
Planet outside the Solar System
Dwarf galaxy
Small galaxy composed of up to several billion stars
Interstellar cloud
Accumulation of gas, plasma, and dust in space
Spiral galaxy
Class of galaxy that has spiral structures extending from their cores.
Plutino
In astronomy, a dynamical group of trans-Neptunian objects
Planet
Large, round non-stellar astronomical object
Trans-Neptunian object
Solar system objects beyond Neptune
Dwarf planet
Small planetary-mass object
Plutoid
trans-Neptunian dwarf planet
Superior planet
planet in the Solar System beyond the orbit of the Earth
Gas giant
Giant planet mainly composed of light elements
Galaxy
Large gravitationally bound system of stars and interstellar matter
Planetary system
Set of non-stellar objects in orbit around a star
gravitationally bound system
type of astronomical objects
Inner planet
Mercury, Venus, Earth, and Mars
Terrestrial planet
Planet that is composed primarily of silicate rocks or metals
Barred spiral galaxy
Spiral galaxy with a central bar-shaped structure composed of stars