Gravity's cause has baffled the world from the beginning. The mystery has been solved. Gravity's cause is proven in this book. This book combines the great works of Newton, Einstein, Kepler, Galileo and Copernicus. Individually, they were unable to determine the cause of gravity. However, when combined, their ideas gel into a complete proof of gravity's cause. It is proven several ways - mechanically, mathematically, visually and by physical behavior. There are several breakthroughs which provide the proof of gravity's cause. You will be amazed as gravity's mystery is unraveled and proven. You will learn how gravity works and be able to understand it.