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Twinkle, Twinkle Little Star

• The Life Cycle of a Star
• Nursery to Neverland

http//www.writedesignonline.com/
Courtney Mutschler Geospace 355
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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

• 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 deaths it could face, depending
• on its size

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1. Small and Medium Stars

• White Dwarf Nuclear
• energy gone ?
• contractions

www.williamsclass.com/.../StellarEvolution.htm

• Black Dwarf burned out white dwarf
• (lump of coal)

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

www.megcabot.com

• Neutron Star aka Pulsar Star a result of a
  gravitational collapse of a star after the outer
  shell has been blasted away.

flickr.com
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3. Massive Blue Stars
Supernova a gigantic star explosion, blasting
away the stars outer shell, seen by us as a
planetary nebula, while the core forms a

• 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/B
lack_Hole_Milkyway.jpg
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References

• http//library.thinkquest.org/J0112787/index.html
• http//www.en.wikipedia.org/