Educators are called to favor digital literacy, introducing the different technological tools for educational purposes since they are part of the daily use of children. Augmented reality and the Stellarium program are powerful tools for teaching astronomy, since they allow observing the stars, constellations and solar system, facilitating the explanation of celestial phenomena to the educator. The objective of this study was to analyze the educational intervention with augmented reality and the Stellarium program, in the development of astronomical language, specifically the semantic and morphosyntactic aspect of the solar system, stars and constellations, for five-year-old boys and girls. The educational intervention was carried out in the Didactic Classroom of the University of Playa Ancha and applied to the children of the Major Transition Level, of three municipal establishments: Liceo San Felipe and the Almendral and Jose Bernardo Suarez Schools. Through a quasi-experimental study (pre and post test), the progress of the fifty-three boys and girls who participated in the study through two tests was analyzed. The results obtained evidenced the progress in scientific language by recognizing elements of the universe-semantic aspect-expressing ideas and explanations about astronomical events-morphosyntactic aspect-that children knew in the educational intervention.