scientific revolution

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Across
  1. 3. (force of attraction between objects)
  2. 5. (model of the solar system)
  3. 6. (model of the solar system with Earth at the center)
  4. 7. (period of major scientific advancements)
Down
  1. 1. (approach to scientific inquiry)
  2. 2. (German astronomer and mathematician)
  3. 3. (Italian scientist and astronomer)
  4. 4. (Polish astronomer)
  5. 8. (English scientist and mathematician)
  6. 9. (French philosopher and mathematician)