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Supernova Ethan Fukuda Cody Tamura Period 1

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What is a supernova? An exploding star reaching the end of its life They emit more energy than the sun will in its lifetime The blast is so bright, it will often outshine a galaxy for up to a couple of months

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What is a supernova? On average, one will occur every 50 years in a galaxy In the universe, a star explodes every other second (thats a lot)

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The Sun The Sun does not have enough mass to turn into a supernova However, when it runs out of its nuclear fuel, it will turn into a red giant and vaporize anything in its path Then it will cool to a white dwarf

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Types of supernovae Type I a star gathers matter from a neighbor star until a nuclear reaction occurs Type II a star runs out of nuclear fuel and implodes under its own gravity

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Type I Lack a hydrogen signature in their spectrum of light Believed to originate from white dwarves Neighbor stars give off gas that collapses the white dwarf and a nuclear reaction occurs

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Type I continued They lack hydrogen compared to other types of supernovas They are brighter than type II supernovas A white dwarf can only support a mass of 1.38 Solar masses, and if it goes above, it will start to collapse than explode Another way is if a white dwarf combines with another star, which is a very rare event

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Type II Must be several times larger than the Sun At its death, a star will stratify the elements within itself They begin to implode The implosion bounces off the core and creates an explosion

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Type II continued Because of this implosion, type II supernovas are known as core-collapse supernovas The difference between a type ll supernova and the other types of supernovas, is that hydrogen is present in its spectrum A type ll supernova is a massive star, which generates energy by nuclear fusion of elements

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The Brightest Supernova It was seen September 2006, ground based telescopes and from NASAs Chandra X-ray observatory. This was the biggest and brightest stellar blast ever recorded, and could be a newly discovered type of supernova. Scientists estimate that the explosion is equal to that of an explosion of a star with 150 times more mass than our sun.

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Crab Supernova Video http://www.youtube.com/watch?v=0J8srN24pSQ

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Works Cited Boyle, Alan. "Scientists Identify Brightest Supernova - Technology & Science - Space - Msnbc.com." Breaking News, Weather, Business, Health, Entertainment, Sports, Politics, Travel, Science, Technology, Local, US & World News - Msnbc.com. Web. 11 Jan. 2011.. "Girl Sets Record As Youngest Person To Find Supernova - Space News - RedOrbit." RedOrbit Science, Space, Technology, Health News and Information. Web. 11 Jan. 2011.. "The Terminal Phases of Stellar Evolution and the Supernova Phenomenon." SAO/NASA ADS: ADS Home Page. Web. 11 Jan. 2011.. "What Is A Supernova? | Space.com." Space, NASA Information & News | Outer Space Flight Videos & Pictures | Astronomy, Solar System Images | Space.com. Web. 11 Jan. 2011..