Across
- 1. the fuzzy outer layer of a comet
- 5. a loose collection of ice and dust that orbits the sun, typically a long, narrow orbit
- 7. which later layer of the sun gas the highest density
- 9. pass through the atmosphere and are found on earths surface
- 10. what is the smallest planet in the solar system
- 11. belt a region where small objects orbit the sun and that stretches from beyond the orbit of Neptune to about 100 times earth's distance from the sun
Down
- 2. cloud from what region does most comets come from
- 3. rocky objects
- 4. a solid inner core of a coma
- 6. when a meteoroid enters earth atmosphere, friction with the air creates heat and produces a streak of light
- 8. chunks of rock or dust smaller than asteroids