Woosley said the energy released was equal to about 5 billion supernovae, the explosion of dying stars that, until this explosion, had provided the most powerful documented sudden releases of energy. In visible light alone, Woosley said, the gamma ray burst energy was equal to about 1,000 supernovae. By some calculations, the gamma ray burst release equaled as much energy in one second as all of the 10 billion trillion stars in the universe combined. Woosley said it is difficult to relate the power in common terms. Yet over its 10 billion-year history, Woosley said, the sun will produce only about 1 percent of the energy of the explosion.
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