This book contains complete new explanation for Gravity, Formation of Galaxies, Light, Heat and Black Holes along with other explanations that will change the way we perceive Gravity and Light. The special curves like cycloid and helix used to derive mathematically that acceleration produced (known as acceleration due to gravity) is only due to two velocities namely rotation and revolution of the heavenly bodies not due to any gravity force, which proves why inertial mass is equal to gravitational mass. The new approach to find acceleration due to gravity leads to new values of “g’ for the heavenly bodies of our solar system. This value leads to new interpretation of atmospheric conditions that depends on “g”. An attempt is made to describe the atmospheric conditions of other planets due to this variation. This book contains Chapters on Formation of Galaxies giving explanation for rotation curve of the spiral galaxy...