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link to NASA
A supernova is the explosion of a very large [[star]] such that the star becomes extremely bright, perhaps even one billion times brighter than our [[sun]].
A supernova is the explosion of a very large [[star]] such that the star becomes extremely bright, perhaps even one billion times brighter than our [[sun]]. [http://www.nasa.gov/worldbook/supernova_worldbook.html]
==External links==
[http://www.nasa.gov/worldbook/supernova_worldbook.html NASA - Supernova]
[[Category:Astronomy]]
[[Category:Astronomy]]