The Pierre Auger Observatory, in Argentina, is the largest cosmic ray detector ever built. It has actively been taking data for more than 15 years now, and thanks to this detector we have a better understanding of the most energetic particles in the universe. We can now start to answer some of the most important questions, such as where do they come from? What are they? How do they interact with the atmosphere? In this proceedings a selection of the most important results of Auger from the past few years is presented, with particular focus on those of astrophysical interest.