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The Expanding Universe
- 2. Learning Outcomes
• I can estimate how many stars and galaxies
there are
• I can explain what red shift is and what it
shows
- 3. Starter
• What is a star?
• What is a galaxy?
• How many stars in a galaxy??
• How many galaxies in a universe???
- 5. ???
• How do we know what the stars are made
of?
• What is red shift?
• What is the Doppler Effect?