
In this image provided by NASA, seemingly out of nowhere, Supernova 2008D burst onto the scene on Jan. 9, 2008, as seen in ultraviolet images and X-ray images taken by NASA's Swift Satellite. Astronomers for the first time witnessed the start of one of the universe's most fiery events: the end of a star's life as it exploded into a supernova.
(AP Photo/NASA)

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