Across
- 2. flattened circle
- 5. amount of time a planet takes to circle the sun
- 7. famous for the law of gravity
- 8. an object that keeps moving at the same pace unless acted upon by a force
- 9. transit of mercury across the face of the sun, only happens once per decade
- 10. realization that earth is not the center of the universe
- 13. Suns inward pull of gravity on a planet that stops it from moving straight
- 14. the force that holds us to Earth
- 15. A stone site south of England, the sun rose directly over the heel stone on the longest day of the year
Down
- 1. provided a more natural explanation of the tangled cosmology
- 3. Backwards loops that a planet will take during its orbit
- 4. Simplified geometry of the orbits of earth and venus as they move around the sun
- 6. slight shift in the observed direction to a star caused by earths motion
- 11. A Greek philosopher he taught about the solar system
- 12. a push or pull that changes an object direction of motion