Philosophers have spilled much ink over the discovery of ideas in the classical “context of discovery.” However, there has been little engagement with the question of what constitutes a discovery of “things in the world.” A much-overlooked answer to this question is provided by T. S. Kuhn. In this article, I show that discoveries awarded the Nobel Prize in Physics over the past 53 years accord with a basic premise of Kuhn’s account and his distinction between two types of natural kind discoverie