Across
- 6. the sun and all of the bodies that orbit the sun
- 8. the model of the solar system that is "sun-centered"
- 9. a celestial body that orbits the sun, is round because of its own gravity, but has not cleared its orbital path
- 10. the motion of a body that travels around another body in space
- 12. the flattened oval shape that planets orbit in
- 13. a small body of ice, rock, and dust that follows a highly elliptical orbit around the sun
- 14. one equals the average distance between the sun and Earth
- 16. a meteoroid that reaches Earth's surface without burning up
- 17. a natural satellite that orbits planets and asteroids in our solar system
Down
- 1. Jupiter's four largest moons
- 2. a force of attraction between objects that is due to their masses and the distance between them
- 3. the spinning of a body on its axis
- 4. a natural or artificial body that revolves around a planet
- 5. the model of the solar system that is "earth-centered"
- 7. a small, irregularly shaped, rocky object that orbits the sun
- 11. a sand grain to boulder-sized, rocky body that travels through space
- 15. a bright streak of light that results when a meteoroid burns up in the Earth's atmosphere