Planetarium
[n] an apparatus or model for representing the solar systems
[n] an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome
[n] a building housing an instrument for projecting the positions of the planets onto a domed ceiling
Related Information
Related Terms
astronomical observatory, astronomical telescope, Cassegrainian telescope, coelostat, coronagraph, coronograph, heliostat, Newtonian telescope, OAO, observatory, orrery, OSO, radar telescope, radio observatory, radio telescope, reflector, refractor, spect