It is not known when man started asking questions and searching for answers, but once he started, the series of questions and answers never stopped. These questions and the search for answers gave birth to every branch of human knowledge. Myths, stories, religion, philosophy, spirituality, philosophy, science ? they are the result of the search for answers to questions. In this crowd of questions, there were two big questions: the origin of the universe and how and why animals and humans originated. History tells us that there is a fundamental difference between asking how and why. Questions starting with how lead us to science and the search for questions starting with why leads us to spirituality and religion. This book is an attempt to identify the definition of 'science' by showing the example of the changing story of the evolution of the universe and life. Turning the pages of history, this book tells that science cannot be defined without touching spirituality and religious knowledge, and without drawing a line between them. One of the many fundamental differences between science and religious knowledge is that in science, proving an old truth wrong is celebrated, whereas in religion, pointing a finger at an eternal truth is met with crisis.