Introduction
摘要
The motion of planets has been a source of enduring fascination for people throughout history. Incremental progress has been made in our understanding of the solar system over time. The earliest breakthroughs predominantly came from meticulous observations and were driven by the practical need to predict events essential for everyday life, such as those related to agriculture and farming. Initially, a comprehensive model was absent. It was only during the Greek period that the first formal attempt at explaining planetary motion emerged, proposing that planets follow circular orbits centred around the Earth.