Small solar system objects

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