By: Lydia Biehl

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What is a Supernova?

Supernovae are stars that explode after a while. "If it weren't for supernovae, we wouldn't exist," says Alex Filippenko. "The carbon in our cells, the oxygen that we breathe, the calcium in our bones--all were cooked up in the stars and expelled into space by these explosions." Without supernovae, everything we know wouldn't exist. All of the atoms that form inside a supernova, make everything on Earth.
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Types of Supernovae

There are two main types of supernovae. One of them is type 1a, this kind happens when too much uncontrolled carbon and oxygen collide. They will end of exploding because of the fusion. Another one is type 2, this one occurs when a massive star's lifetime ends. It will explode because of the dying chemicals inside of the star.

A supernova hasn't been seen in our galaxy for more than 300 years. Scientists use telescopes to look into far away galaxies and watch the stars. Our sun could never become a supernova, if it did, our Earth would dissolve in a matter of minutes. When they explode iron and carbon particles scatter throughout space.

11 Deadliest Supernovas EVER!


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Works Cited

"Imagine The Universe! Home Page." Imagine The Universe! Home Page. N.p., n.d. Web. 10 Nov. 2014.

Jackson, Ellen. The Mysterious Universe: Supernovae, Dark Energy, and Black Holes. Boston: Houghton Mifflin, 2008. Print.