science

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Across
  1. 3. solid inner core of a comet
  2. 5. cloud stretches out more than a thousand times the distance between the sun and neptune.
  3. 10. can leave craters
  4. 11. dwarf planet that orbits beyond neptune is also called
  5. 12. loose collections of ice
Down
  1. 1. generally less than 10 meters across
  2. 2. rocky objects
  3. 4. energy of gas
  4. 6. belt which exstends to about 100 times earths distance from the sun
  5. 7. dwarf planets new category called
  6. 8. showers when earth passes through an area with many meteoroids
  7. 9. for many years blank was considered a planet