Across
- 1. proved the moons of jupiter did not go around Earth
- 3. a geometric figure with an eccentricity of zero
- 4. the path of a planet around the sun
- 6. a geometric figure with an eccentricity of one
- 9. heliocentric model, with elliptical orbits
- 11. discussed that gravity keeps the planets near the sun
- 12. theory of how the solar system formed
- 13. technology that enabled Galileo to see the moon's surface
- 14. first scientist to state the heliocentric model
Down
- 2. the mathematical method of calculating the shape of an ellipse
- 5. earth-centered model of the solar system
- 7. sun-centered model of the solar system
- 8. he took precise observations, which helped Kepler develop his theory
- 10. concept of the origin of the universe