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“Twinkle, Twinkle Little Star” The Life Cycle of a Star: Nursery to Neverland Courtney Mutschler Geospace 355 http://www.writedesignonline.com/
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Our Sun is a Star! www.sec.noaa.gov/primer/primer.html
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How I Wonder What You Are… Space acts as a nursery full of the stuff needed to give birth to stars.. –Gas –Dust The Space Nursery provides both these materials in the clouds in the atmosphere of space!
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Birth : Protostar Shine Stars are born when gravity pulls in the gas and dust in my Solar Nursery and begins to Shine! When the cool masses of dust and gas combine, a star has a temperature of 1,800,000 degrees F! http://www.virginmedia.com/images/
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Way Above the World So High… The Life Span of a star depends on the type of star it is: –Giant blue Stars = 1 to 100 million years –Yellow Star (the Sun) = 10 billion years –Red dwarf Stars = 100 billion – 1 trillion years
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Like a Diamond in the Sky… Giant Red Star During the stars “old age,” the star swells into a giant red star as its hydrogen fuses into helium and burns other fuels. http://upload.wikimedia.org/wikipedia/commons/7/7f/Betelgeuse_star_(Hubble).jpg
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RIP Little Twinkle… A star has 3 types of death’s it could face, depending on its size…
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1. Small and Medium Stars Black Dwarf: burned out white dwarf (lump of coal) White Dwarf: Nuclear energy gone contractions www.williamsclass.com/.../StellarEvolution.htm library.thinkquest.org/.../blackdwarfs.html
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2. Large Blue Star Supernova – a gigantic star explosion, blasting away the stars outer shell, seen by us as a planetary nebula, while the core forms a Neutron Star aka ‘Pulsar’ Star; a result of a gravitational collapse of a star after the outer shell has been blasted away. www.megcabot.com flickr.com
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3. Massive Blue Stars Black Hole: where the gravitational pull is so powerful nothing can escape its one-way surface! http://www.ifa.hawaii.edu/~barnes/ast110_06/bhaq/Black_Hole_Milkyway.jpg Supernova – a gigantic star explosion, blasting away the stars outer shell, seen by us as a planetary nebula, while the core forms a
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References: http://library.thinkquest.org/J0112787/index. html http://www.en.wikipedia.org/
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