Across
- 4. Created the Universal Law of Gravitation.
- 6. Made the Theory of Knowledge, "I think, therefore I am."
- 9. Made detailed observations of the galaxy that was extremely important for later discoveries on astronomy.
- 10. A space without matter or air.
- 11. The philosophical idea that reality is made up of two different principals.
- 12. The force that pulls objects with mass toward each other.
- 15. Study of everything beyond Earth's atmosphere.
- 16. Study of fundamental questions about the world, knowledge, and value.
Down
- 1. Made by Christiaan Huygens and it's made to give accurate timekeeping.
- 2. Made the book "On the Fabric of the Human Body."
- 3. Made the Heliocentric model.
- 5. Branch of mathematics that studies the size of shapes, positions, and spatial relationships.
- 7. Branch of mathematics that studies how things change, or rate of change.
- 8. Made improvements to the telescope.
- 13. Scientific study of the structure of living things, especially in humans.
- 14. The study of the physical plane of matter, motion, force, and energy.
