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Astronomy (Philosophers (Gallileo (Jupiter has 4 moons, Venus has phases,…

- - - - Earth is 4 times larger than the moon
      - Earth is a Sphere
    - - Sun is larger than the moon
      - The moon and Sun have the same angular diameter
  - - - Heavenly
        
        Things don't change
        
        Predictable
        
        Things are always moving
      - Earthly
        
        Things change
        
        Chaos
        
        Things don't move
  - - - Sun is the center
      - The moon orbits the Earth
      - The stars are fixed to a sphere outside the planets
  - - - Venus and Mercury are tied to the Sun's line of sight
      - Planets make small ellipses while in orbit
      - The Earth is the center
- - - - The moon appears fully lit because the Earth is between the moon and the Sun
  - - - The moon is half way around it's orbit, so it appears half lit on the right side
  - - - The moon appears half lit on the left side because it is 3/4 through it's orbit
  - - - The moon appears to be completely dark because the moon is between the Earth and the Sun
- - - - When the moon crosses between the Earth and the Sun, so the moon has the same apparent size as the Sun, 1-2% can see full solar eclipse.
  - - - When the moon passes through Earth's shadow, 50% can see a full lunar eclipse.