Across
- 3. satellite of a planet
- 5. Mercury, Venus, Earth and Mars
- 7. where the Sun & Solar System are located
- 8. orbit a central point
- 13. a body that revolves in orbit around another body
- 15. the earth spins on its axis,resulting in day and nigh.
- 16. Jupiter,Saturn, Neptune and Uranus
Down
- 1. attraction between two objects
- 2. the sun and objects that orbit the Sun
- 4. the star at the center of the solar system
- 5. reflects light
- 6. a large round body that orbits a star
- 9. the path an object takes around another object
- 10. a large rock but maller than an asteroid
- 11. glowing trail in the atmosphere
- 12. small body that orbits the sun has ahead and tail
- 14. measurement of the gravitational force acting on an object