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?"
Supernova are extremely luminous and cause a burst of radiation that can outshine an entire galaxy. During this short period, a supernova can radiate as much energy as the Sun would
http://wiki.answers.com/Q/How_big_is_a_supernova
A supernova can be any size! There are some that are 150 times larger than our sun and some
http://www.chacha.com/question/how-big-is-a-supern...
1. Accumulate more than 3.2 times the sun's mass worth of hydrogen gas. (The 3.2 figure is called a Chandrasekhar limit, and refers to amounts of initial mass that determine a star's
http://www.ehow.com/how_2107851_see-supernova.html
In order to tell how big it is, we would first need to know what it is. The best way to find out how big something is is to measure it, using a tape measure, yardstick, or other measuring
http://www.ask.com/web-answers/Science/Astronomy/h...
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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