 
			     
   Secure Scanned : 11/01/2025
				     Secure Scanned : 11/01/2025
                    
                    
                 
							PBS Space Time 2022 -
Overview:Half of the universe is filled with expansionist alien civilizations, and it’s only a matter of time before they’ll reach us. OK, that sounded a little sensationalist. But it’s also the conclusion of a recent astrophysics paper. Let’s see how they figure this, and whether we should take it seriously.

 
								
								
							
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