Across
- 2. clouds of gas and dust form a fuzzy outer layer
- 5. rocky objects which are too small to be a dwarf planet
- 7. rock and ice formed small bodies
- 12. the inner planets
- 13. loose collections of ice
- 14. stretches out more than 1000 times the distance between the sun and neptune
Down
- 1. extends to about 100 times earths distance from the sun
- 3. a region of the solar system between mars and jupiter
- 4. a streak of light
- 6. trapping heat by the atmosphere
- 8. pass through the atmosphere and found on earth
- 9. 4 big planets are called
- 10. solid inner core of a comet
- 11. chunks of rock and dust smaller than asteroids
- 15. a thin disk of small particles of ice and rock