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Astronomers have seen what could be the most powerful supernova ever detected. The exploding star was first observed back in June last year but is still radiating vast amounts of energy. At its peak, the event was 200 times more powerful than a typical supernova, making it shine with 570 billion times the brightness of our Sun.
Spectra have confirmed that the object's blue-colored light has been traveling toward Earth for the past 2.8 billion years -