| Discovery HD: How The Universe Works: Supernovas (HDTV) |
| Wednesday, 14 July 2010 22:14 |
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The supernova is the greatest cataclysmic in the history of the entire Universe. Supernovas come in different sizes and types. All of them are so bright they can be seen across the universe. This violent distruction of a star is also the birth of everything we see around us.
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