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Details
They are so bright they are a billion times more luminous than the sun. They are so distant their light takes billions of years just to reach Earth. These amazingly violent explosions, or death stars, may even have the power to eradicate life in an entire galaxy. See how these celestial phenomena can teach us about the dawn of the universe. And hear a controversial theory of how a gamma ray burst in our own galaxy could destroy life on Earth.
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