Pierre Auger collaboration (496 authors)Abreu, P.Andringa, S.Assis, P.Brogueira, P.Cazon, L.Conceicao, R.Diogo, F.Espadanal, J.Goncalves, P.Oliveira, M.Pimenta, M.Santo, C.E.Santos, E.Tome, B.2019-02-032019-02-032014-06-18http://dx.doi.org/10.1007/s13538-014-0218-6http://hdl.handle.net/10400.26/26487The Pierre Auger Observatory is the world’s largest cosmic ray observatory. Our current exposure reaches nearly 40,000 km$^{2}$sr and provides us with an unprecedented quality data set. The performance and stability of the detectors and their enhancements are described. Data analyses have led to a number of major breakthroughs. Among these, we discuss the energy spectrum and the searches for large-scale anisotropies. We present analyses of our X$_{max}$ data and show how it can be interpreted in terms of mass composition. We also describe some new analyses that extract mass-sensitive parameters from the 100 % duty cycle surface detector (SD) data. A coherent interpretation of all these recent results opens new directions. The consequences regarding the cosmic ray composition and the properties of ultrahigh-energy cosmic ray (UHECR) sources are briefly discussed.engjournal article2019-02-03