The Search for Galactic Time Bombs: Future "Hypernovas" - The Most Violent Objects in the Universe

The Search for Galactic Time Bombs: Future "Hypernovas" - The Most Violent Objects in the Universe: "Many astronomers today believe that one of the most plausible reasons we have yet to detect intelligent life in the universe is due to the deadly effects of local supernova explosions that wipe out all life in a given region of a galaxy."