The main purpose of this research was to interpret the discourses of the transferencial relations between children and monitors teachers in an astronomical observatory. Were concepts of transference and discourse is introduced highlighting the psychoanalytic aspect as reference to understand the teacher-student relation, during a class visit in an astronomical observatory. Is theoretically and methodologically based on Education, Psychoanalisys and Astronomy Education references. The results obtained by the analysis of the four lacanian discourses of the unconscious point to traces of three approaches to the discursive transferential relationship between monitors and children at the observatory: authoritarianism, excitability and otherness.