Carl sagan said all humans were made of "star stuff"
	
		
			
				
					 
				
			
			
				
					
						
						 
						
					
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			Element found in our teeth detected for the first time in galaxy 12 billion light-years away | CNN
					For the first time, astronomers have detected fluorine, which can be found in our bones and teeth as fluoride, in a galaxy that is more than 12 billion light-years away.