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	mads.xsd"><authority><topic authority="http://www.serbi.ula.ve/tematres/vocab/">PLANETAS</topic></authority><related type="narrower"><topic>HIPOTESIS NEBULAR</topic></related><related type="narrower"><topic>MECANICA CELESTE</topic></related><related type="narrower"><topic>OCULTACIONES</topic></related><related type="narrower"><topic>ORBITAS</topic></related><related type="narrower"><topic>PLURALIDAD DE MUNDOS</topic></related><related type="narrower"><topic>SATELITES</topic></related><related type="narrower"><topic>SISTEMA SOLAR</topic></related><related type="narrower"><topic>VIDA EN OTROS PLANETAS</topic></related><related type="broader"><topic>ESTRELLAS</topic></related></mads>