Nov. 4 (UPI) -- Scientists have discovered a supermassive black hole flare, the largest seen in the universe, and it may be making a meal of an enormous star. The flare is 30 times more powerful than the previous most powerful active galactic nuclei transient, according to a study published in the journal Nature Astronomy. "Very few physical events in the Universe can liberate this much electromagnetic energy," researchers wrote in the study. While most stars eventually explode into supernovae