Kepler discovered the forces that govern planetary motion.
a. true
b. false

The answer is definitely A. True. Johannes Kepler, was an astrologer, astronomer and a mathematician. He was a German scientist in the 17th century who is best credited for his Laws on Planetary Motion. Along with science, Kepler based his studies on his religious notions and beliefs that the God that created the world based it with intellectual reason and pure enlightenment. Kepler’s impact to the field of Astronomy is so huge that he inspired Isaac Newton’s Theory of Universal Gravitation.