Types of hypothetical astronomical objects Hypothetical astronomical objects have been speculated to exist both inside and outside of the Solar System, and speculation has included different kinds of stars, planets, and other astronomical objects. For hypothetical astronomical objects in the Solar System, see: List of hypothetical Solar System objects For hypothetical stars, see Hypothetical star For hypothetical brown dwarfs, see: List of brown dwarfs For hypothetical black holes, see: Hypothetical black hole For extrasolar moons, all of which are currently hypothetical, see: Extrasolar moon For  planets or moons whose existence is not accepted by science see: Planetary objects proposed in religion, astrology, ufology and pseudoscience  For hypothetical planets in fiction see: Fictional planets of the Solar System
Types of hypothetical astronomical objects Hypothetical astronomical objects have been speculated to exist both inside and outside of the Solar System, and speculation has included different kinds of stars, planets, and other astronomical objects. For hypothetical astronomical objects in the Solar System, see: List of hypothetical Solar System objects For hypothetical stars, see Hypothetical star For hypothetical brown dwarfs, see: List of brown dwarfs For hypothetical black holes, see: Hypothetical black hole For extrasolar moons, all of which are currently hypothetical, see: Extrasolar moon For stars, planets or moons whose existence is not accepted by science see: Planetary objects proposed in religion, astrology, ufology and pseudoscience and Stars proposed in religion For hypothetical planets in fiction see: Fictional planets of the Solar System
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stars,
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and Stars proposed in religion