planetarium definition

  • noun:
    • An apparatus or design representing the solar power system.
    • An optical unit for projecting pictures of celestial bodies and other astronomical phenomena on the inner area of a hemispherical dome.
    • A building or room containing a planetarium, with seats for an audience.
    • A display museum which images of performers also astronomical phenomena are projected onto a domed ceiling.
    • An orrery.
    • An orrery. See orrery.
    • An astronomical machine which, because of the action of their parts, presents the movements and orbits associated with planets. See orrery.
    • an apparatus or model for representing the solar power systems
    • an optical unit for projecting photos of celestial systems along with other astronomical phenomena on the inner surface of a hemispherical dome
    • a building housing a musical instrument for projecting the roles of this planets onto a domed ceiling

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