In this dissertation, I argue that Heidegger offers a philosophy of science by explicating that philosophy of science. The following chapter presents Heidegger's early analysis of modern science, from 1916 to the mid-1930s. During these years Heidegger maintains two theses: that the essence of science is the mathematical projection of nature; and that metaphysics is the science of being. As the latter thesis becomes more problematic, Heidegger turns from metaphysics as a science, to the sciences. ;The pivot for this turn (...) is the experiment. Chapter 3 is an analysis of three specific issues surrounding the experiment. I raise the question of whether a single experimental result is enough to overturn a theory, the problem of the theory-loadedness of observation, and the question of representation. ;These issues serve to explicate Heidegger's claim that the essence of science is research, and to show that Heidegger's philosophy of science shares issues with contemporary analytic philosophy of science. Further, I take Heidegger's claim that the essence of science is the ground from out of which the essence of the modern epoch can be shown, as proof that his consideration of science is not secondary in his thinking but rather is the basis from which his critique of the modern epoch is made. ;Chapter 4 is an account of Heidegger's view of the role of science in the university. Heidegger's vision is that the German university can serve to guide historical destiny. His complete disillusionment with that vision comes with his realization that, whereas he calls for a renewal of science for the sake of the sciences in their service of the people, the Nazi call for a renewal of the sciences is toward their own political ends. What little I have to say about Heidegger's involvement with the Nazis is found in this chapter. ;Chapter 5 considers Heidegger's view of ancient science. It lays out Aristotle's distinction between physis and techne under Heidegger's reading. In Chapter 6, I argue that the ancient distinction between physis and techne is not sustained in the modern epoch under Heidegger's account. ;I close with a brief account of Heidegger on quantum theory. (shrink)