How big is a supernova?

Answer

A supernova is said to be greater than an atomic bomb. Once a supernova occurs, there is enough energy remaining to run an entire galaxy.
Q&A Related to "How big is a supernova?"
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1 Additional Answer
A supernova, when it explodes, is capable of outshining a whole galaxy. Supernovas happen when a star is close to death. When they explode they leave many particles of gas that create new stars. You can find more information here: http://library.thinkquest.org/C004580/anomalies/snova.html
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