
Planetary Motion
Planetary motion refers to the movements of planets around their stars, primarily influenced by gravity. Each planet orbits in an elliptical path, meaning it's not a perfect circle. The closer a planet is to its star, the faster it moves due to stronger gravitational pull. This concept is rooted in Kepler’s Laws, which describe how planets travel: they sweep out equal areas in equal times and have predictable orbits. Additionally, Isaac Newton's law of universal gravitation explains how masses attract each other, governing the motions within our solar system and beyond. Understanding this helps us comprehend the dynamics of celestial bodies.