Across
- 2. thin disk of small particles of ice and rock
- 6. trapping heat in the atmosphere
- 10. Inner planets are often called this
- 13. come from comets or asteroids
- 14. spherical region of comets surrounds the solar system
- 15. meteoroid that passes through earths atmosphere
Down
- 1. solid inner core of a comet
- 3. Large planets made up of mostly gas
- 4. asteroids revolving between Mars and Jupiter
- 5. doughnut-shaped ring of comets
- 7. Largest planet in our solar system
- 8. meteoroid that leaves a streak in the sky
- 9. rocky objects floating in space
- 11. loose collection of ice dust and small rocky particles
- 12. fuzzy outer layer of gas around a comet