Solar system

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Across
  1. 4. provides earth with seasons
  2. 8. the planet with an eccentricity of 0.047
  3. 9. the trend between distance from the sun and period of revolution
  4. 10. the 2nd smallest planet
  5. 11. the planet with the greatest density
  6. 12. group of planets furthest from the sun
  7. 14. a solar system model where the sun is in the center
  8. 15. a solar system model where the sun and planets revolve around the earth
  9. 16. the deflection of objects to the right as they travel north
  10. 17. the planet that spins the fastest
  11. 19. provides earth with day and night
Down
  1. 1. the planet that would float in water
  2. 2. the planet with the longest day
  3. 3. the planet closest to the sun
  4. 5. group of planets with a smaller diameter
  5. 6. the planet with the longest year
  6. 7. refers to the size of the planet
  7. 13. these change throughout the year which proves that earth revolves around the sun
  8. 18. made a pendulum to prove that earth rotates