Across
- 4. View that the earth is the center of the universe
- 6. Branch of science that deals with celestial objects
- 7. A tool designed to make objects appear closer
- 10. Scientist who was forced by the Catholic Church to take back his ideas
- 13. A polish astronomer that developed heliocentric theory
- 15. A tool used for viewing very tiny objects
- 18. Equivalent to the word nature
- 19. An expert in mathematics
Down
- 1. The forced that maintained the planetary orbits and kept objects from flying into space
- 2. French mathematician who influenced the use of the scientific method
- 3. German astronomer that proved the ide of heliocentrism
- 5. Theory that the sun is the center of the universe
- 8. Introduced the vaccine for smallpox
- 9. Society of baptized Christians'
- 11. New way of thinking about the natural world based on willingness to question
- 12. Collection of eight planets that revolve around the sun
- 14. Logical procedure for gathering and testing ideas
- 15. A period of European history
- 16. Scientist that discovered laws of motion and gravity
- 17. English philosopher that proposed scientific theory