Interactive Learning Center Diliman

Retrograde Motion of Planets

Description of retrograde motion and difference of the Greek from Copernican models that explain retrograde motion.

Learning Object Development Team:

Author : Johnrob Bantang
Developer: Marc San Valentin
Instructional Designer: Celia T. Adriano
Language Editor : Villy ATH Buenaventura
Project director : Rowena Cristina Guevara