Well, I don't know if I like the revelation of the cause yet, but at least 
	
	
		
			
	
	
		
			
		
		
	
				
			the part where it would all be destroyed in a chain reaction after a burst centering on a planet-sized source was actually plausible for me. As long as it's not a time-travelling Discovery, I'm happy.
		 
				 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		
 
 
		 
 
		 
 
		 
 
		
 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		