"One of the most cataclysmic events in the universe: When a massive star bigger than our Sun reaches the end of its life, it creates a supernova. A powerful explosion is destructive on a scale almost beyond human imagination. And sometimes so powerful they can be seen by the naked eye from Earth.
Scientists thought they understood this phenomenon, but recent discoveries have revealed not one, but two new kinds of a supernova.
But just how powerful is a supernova, and could the Earth one day be destroyed by the blast from one? Get ready to be surprised by the answers to this and more..."
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