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This book gives brief new insights to all the modern thoughts about Physics and Astronomy and many changes in the subjects proposed which you cannot find in other books. It covers subjects like Gravity, LIght, Black holes, Formation of Galaxy, collision of Planets, Dark Matter and energy and so on. It says acceleration due to Gravity is the resultant of two velocities of Heavenly bodies namely rotation and revolution. Mathematically it was derived and shown the value of acceleration due to Gravity for the Earth. Hence till now we Perplexed without knowing the exact causes for acceleration due to Gravity and here we found. We came out from Perplexed to Perceptible Force called Gravity.