For nearly 20 years, physicists from the University of Siegen have been working on researching cosmic radiation at the Pierre Auger Observatory in Argentina. The international collaborative project has now been extended to 2035, with a formal agreement signed during a special ceremony. Representing the University of Siegen at the ceremony were Prof. Dr. Markus Cristinziani, Prof. Dr. Markus Risse, and Chancellor Ulf Richter. To read the full news article about this exciting development and the observatory, click this link: https://www.uni-siegen.de/start/news/forschungsnews/1051380.html.