The Atomic Cosmos Blog
 
      
      Element of the day: Iridium
Iridium is a very rare element in Earth's crust that had a crucial role in confirming the theory that a large asteroid resulted in the mass extinction of the dinosaurs.
 
            
              
            
            
          
               
            
              
            
            
          
               
      
      Iridium is a very rare element in Earth's crust that had a crucial role in confirming the theory that a large asteroid resulted in the mass extinction of the dinosaurs.