A Celestial Sphere Model in GeoGebra

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Mónica López García
Santiago Cerisola

Abstract




The article presents a celestial sphere model made in GeoGebra. The authors describe the math- ematical tools necessary to model celestial objects using spherical coordinates and the construction of stars, circles, and meridians. They incorporate a brief description of the construction of constellations using GeoGebra through JavaScript. In addition, the article describes the modeling of the ecliptic and the positions of the Sun and the Earth to understand their apparent movements and the concept of the Zodiac.




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Miami University

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