Space Puzzle

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Across
  1. 2. The atmosphere surrounding the Nucleus of a Comet
  2. 5. A disk of icy bodies outside Neptune's orbit
  3. 6. A rock floating in space
  4. 8. An irregularly shaped rock that orbits the sun but is too small to be considered a planet
  5. 9. A meteor that is burning up in the atmosphere of another planet
Down
  1. 1. The middle of a comet
  2. 2. Made of ice, and dust that orbits the sun
  3. 3. A place between Mars and Jupiter's orbit where asteroids are found
  4. 4. A meteor that hit a planet
  5. 7. The dust or ionized gas trailing a comet