 
                    Key Takeaways:
- The provided text states a rate of approximately 40 supernovae occurring per second throughout the universe.
- The source quantifies the frequency of supernova events as a global phenomenon.
- The numerical value presented (40 supernovae/second) is offered as an aggregate across the observable universe.
- No further contextual information regarding the types of supernovae or their distribution is given.
Putting these numbers together, about 40 supernovae are exploding somewhere in the universe every second.
	
 
		 
		 
		 
		 
		 
		 
		 
		