Types of Supernova and Dying Stars

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Supernova (Stellar Explosions)
When people look up to the sky at night time, they will probably see bright sparkling stars. These stars might look peaceful and innocent from earth, but in reality they’re the opposite. Stars are one of the brightest and hottest objects that the human race has found. They are known to be one of the most destructive objects in the universe. Interestingly enough, they are at their most destructive stage when they are close to death. (Supernova-Stellar Explosion).
When a star dies it is called a supernova. “Supernovas can be so bright that they can light up entire galaxies”(Thompson). “The last known visible supernova was October 6, 1604. It was discovered by a German astronomer by the name of Johannes Kepler. There has been no other sitings of supernovas in our galaxies since” (Britt). Supernovas are extremely rare in our galaxy, but there are stars in our galaxy that have the potential of exploding at any moment (Britt).
The closest star to earth is the sun. The sun is the biggest object in the Milky Way galaxy. Also the sun is one of the smallest stars in the galaxy. Even though the sun has been around for billions of years scientist believe it does not have the potential to explode for another billion years. Looking up at the sun it might look extremely hot but

Ridout 2 really it is one of the cooler stars. Stars are categorized in heat by what color they give off. If a star gives off a the color blue this means it is extremely hot. If it gives off a reddish - orange kind of color, like the sun, this means it is moderately hot. When a star gives off a red color it means it is the coldest type of star (Challoner).
The reason these stellar explosions occur is because a star has reached its...

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...ything and everything around it. Everybody should be thankful for stars. They are the reason for everything
Ridout 5 you see in the galaxy and universe. People should also appreciate the sun. If it wasn’t for the sun life on earth would cease to exist.

Works Cited

Bergamini, David. The Universe. Canada. Time Life Books, 1970. Print.
Britt, Robert Roy. “The Last Supernova: 400-Year-Old Explosion.” m.space.com. 6 Oct. 2004. Web.
Brown, Lancaster Peter. Astronomy in Color. New York: MacMillan, 1978. Print.
Challoner, Jack.The Atlas of Space. Brookfield, Connecticut: Aladdin Books Ltd. 2001.
Print.
imagine.gsfc.nasa.gov. Supernovae, NASA, 1997. 7 February 2011. Web.
Supernova - Stellar Explosion. Dir. Papadopoulos. Discovery. YouTube. Web.
Thompson, Andrea. “What is a Supernova?” 4 May 2009. Web.

Villanueva, Carl John. “What is a Nebula?” 30 March 2010. Web

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