Across
- 5. phases of hydrogen behaves like electrical conductor
- 6. an asteroid fragment
- 8. rocky body orbiting sun
- 10. part that hits the ground
- 12. atmosphere producing bright streaks of lights
Down
- 1. incandescent matter as a result of friction
- 2. a torus shaped region
- 3. planet composed of hydrogen and helium
- 4. area/region/ section
- 7. group of rocks and ice
- 9. air polluted with hydrogen carbons and nitroxides
- 11. smaller planets orbiting sun