there's plenty of good literature available about the history and philosophy of science there is no set scentific method however as science usually contends with things that are observable predictable falsifiable experimental a discussion centered around these ideas usually elucidates the shortcomings of supernatural explanations within science try researching some popular science philosophers such as karl popper paul feyerabend and thomas samuel kuhn also try methodological naturalism and the supernatural as well as justifying methodological naturalism