Our universe is very vast and mysterious. From the beginning of civilization, we were searching for it’s beginning and evolution. In quest of finding the answers to these ultimate questions, we have stumbled upon various laws of universe. At first, most people considered these laws to be the natural way of being, while a few did study it a little deeper to formulate a set of equations to represent them and use it in future studies. And thus, our knowledge of this universe increased slowly, but steadily. By now, we all, old and young know that these laws are universal laws that can’t be violated.