The answer to this question is of great importance, and many phylosophers have sought to provide an answer so that it can be used to assess whether beliefs that are claimed to be scientific really are science can be defined simply as a system of accumulating knowledge that uses observation and experimentation to describe natural phenomena. It is an accumulated body of knowledge that humanity has gained over the years using that system. In short, science refers to any systematic field of study or the knowledge gained from it. This definition means that the purpose of science is to develop general laws that explains how the world around us works and why things happen the way they do. How do we accomplish such a feat? That's were the “accumulation and classification and classification of observable facts” comes in. The practice of science involves experimentation and observation. Scientists observe the world around them and collect facts they also design experiment that alter the circumstances they are observing, which in turn leads to the collection of data. These facts might eventually allow scientist to learn enough about the world around them so they can develop ideas that help us understand how the nature world works. The problem of saying what is scientific and what is not is called demarcation problem. Some people have claimed scientific status for beliefs and practices, such as those of astrology and creationism(the doctrine that GOD created the Earth a few thousand years ago). If there is anything of which science consists, it is a method or set of methods. Therefore, the study of scientific method (methodology of science) is at the centre of the philosophy of sciences. Natural science have as their object of study the natural world and include physics,chemistry, astronomy,geology, and biology; while social sciences study specifically human or social world and include psychology, sociology, anthropology and economics. The philosophical question they raise are often quite different from those raised by the natural sciences. The philosophy of science is the philosophy of natural science.
