Hi Tammy,

It depends on the mass of the star. Only relatively large stars, significantly more massive than the sun, blow up in supernovas

Our star, the sun, is not expected to become a supernova. When the sun runs out of fuel in its core (in a few billion years) we expect to expend out into a red giant star and then lose its outer atmosphere leaving behind a small, hot, white dwarf star. That is a pretty dramatic change, but it is slower than what happens in a supernova.

You can read more about supernovas and the lives of stars here:

http://starchild.gsfc.nas...se_level1/stars.html

http://www.windows2univer...uff/tourstars_1.html

cheers,

Terry