Hypothetical astronomical objects

Astronomical object

s are significant physical entities, associations or structures which current science has confirmed to exist in space. This does not necessarily mean that more current science will not disprove their existence. Some astronomical objects, such as Themis and Neith are, in light of more recent findings, considered not to exist at all. Others, like Pluto and Ceres, prove to be of an entirely different nature than first expected. In these cases, the scientific community must come to a consensus as to the new status of these objects. Astronomical objects thought to exist based on indirect scientific evidence are considered hypothetical.

Astronomical objects can be easily confused with astronomical bodies. The term "body" indicates a simple object, such as a planet. On the other hand, an astronomical object could be an asteroid belt. These terms differ from "celestial objects" and "celestial bodies" only in that the latter terms do not include the Earth. The table below lists the general categories of objects by their location or structure.

Solar System Extrasolar objects
Simple objects Compound objects Extended objects

  • Exoplanets
  • Brown dwarfs
  • Stars by spectral type
  • Stars by luminosity class
  • Stars by population
  • Stars by stellar evolution
  • Variable stars
  • Compact stars
  • Gamma ray bursts
  • Planetary systems
  • Star systems
  • Stellar groupings
  • Galaxy components
  • Galaxies
  • Galaxy groups
  • Galaxy clusters
  • Superclusters
  • Filaments / Voids
  • Circumstellar matter
  • Interstellar medium
  • Nebulae
  • Intergalactic medium
  • Cosmic microwave background radiation
  • Dark matter
  • Hypothetical
  • See also

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