Results from the Pierre Auger Observatory

The southern part of the Pierre Auger Observatory located in Province of Mendoza, Argentina, is now completed and fully operational. Data are routinely recorded since 2004, even during the construction phase. It consists of a ground array of more than 1.600 water-Cherenkov detectors spread over an area of 3000 km2, overlooked by 24 wide-angle fluorescence telescopes placed in four sites on the array boundary. Southern Observatory is taking data in hybrid mode making it the first hybrid detector for studying the origin and the nature of cosmic rays at extreme energies. Current characteristics of the observatory and recent results on primary cosmic ray spectrum, arrival directions and composition are presented.