The philosophy of science took shape as an autonomous discipline in the first decades of the Twentieth Century in connection with the movement known as logical positivism or logical empiricism. According to logical empiricists philosophy of science ought to perform a “rational reconstruction” aimed at exhibiting the logical structure of scientific theories and inferential processes involved in the acquisition of scientific knowledge. While focusing on the syntactical and semantical aspects of scientific language, logical empiricists left out of the realm of the philosophy of science the sociological and psychological aspects of theory formation, as well as all methodological aspects belonging to experimentation. Starting from the early Sixties this conception gradually changed, and philosophy of science underwent a radical transformation, leading to a significant broadening of its scope. New issues and problems were addressed, belonging to fields neglected by the traditional approach. This paper sketches the main features of the discipline as it is understood today as opposed to its traditional outlook, and suggests that the term “philosophy of the sciences” is better suited than “philosophy of science” to describe its present state.