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The Expanding
  Universe
Learning Outcomes

• I can estimate how many stars and galaxies
  there are
• I can explain what red shift is and what it
  shows
Starter

• What is a star?
• What is a galaxy?
• How many stars in a galaxy??
• How many galaxies in a universe???
???

• How do we know what the stars are made
  of?
• What is red shift?
• What is the Doppler Effect?
Hydrogen
The Expanding Universe
The Expanding Universe
The Expanding Universe
The Expanding Universe

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The Expanding Universe

Notes de l'éditeur