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