Across
- 4. considered a dwarf planet in our solar system
- 7. discovered the aberration of starlight
- 8. force of gravity
- 9. two bodies with equal masses under the influence of their mutual gravity
- 12. a tendency to do nothing or to remain unchanged
- 14. discovered the law of gravity
Down
- 1. earth is not the center of the universe
- 2. also called Tycho he studied astrology, alchemy, and medicine
- 3. sun's inward pull of gravity on a planet
- 5. 4 moons of Jupiter
- 6. semimajor axis of earth's orbit around the sun
- 10. earth ray at center of universe
- 11. Italian philosopher created the telescope
- 13. total amount of matter
- 15. drawn using string,pencil and two thumbtacks