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

1. 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?

6. Hydrogen