Sternwarte
                            
                        
                    
                    
                Jan-Torge Schindler (Leiden) : The Rise and Fall of Quasars
                    
    
        
            
            →
            
        
        Europe/Berlin
    
                
                
                    
                        
                            
    
    
        
            
                
                https://www.physik.uni-hamburg.de/hs/about-us/seminar.html?event=82811 (in presence and via zoom)