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Definition of Planetarium
Plan`e`ta´ri`um
Related Words
Cassegrainian telescope, Newtonian telescope, OAO, OSO, astronomical observatory, astronomical telescope, coelostat, coronagraph, coronograph, heliostat, observatory, orrery, radar telescope, radio observatory, radio telescope, reflector, refractor, spectrograph, spectroheliograph, spectrohelioscope, spectroscope, telescope
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