EntityQ531487· pop 13· linked from 108 articlesDavid Dunlap ObservatorySign in to saveastronomical observatory in Ontario CanadaConnectionsMount Wilson ObservatoryEntityRichmond HillEntitynational historic site of CanadaEntityphysicsEntityastronomyEntityWorld War IConceptBlack holeConceptgeographic coordinate systemEntityInternational Standard Book NumberEntityStanley KubrickPersonHarvard UniversityEntityNetflixConceptClevelandEntityArthur C. ClarkeEntityGeorge VIPersonNewcastle upon TyneEntityWayback MachineEntityAndrew CarnegieEntityexoplanetEntitydigital object identifierEntityCategoriesAstronomical observatories in CanadaBuildings and structures completed in 1935Buildings and structures in Richmond Hill, OntarioNational Historic Sites in OntarioUniversity of Toronto buildings and structures