Space

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Across
  1. 1. The part of a comet that is always facing away from the Sun
  2. 3. The largest planet in our solar system
  3. 4. The force that keeps the planets in orbit around the Sun
  4. 5. The part of a comet that surrounds the nucleus, made of water vapor and gas
  5. 7. Where the majority of asteroids are located
  6. 9. The icy region just past Neptune where some comets originate
  7. 11. The 'body' of a comet
  8. 14. A meteoroid that has entered Earth's atmosphere
  9. 15. A meteroid that has made it to Earth's surface
Down
  1. 2. An irregularly shaped chunk of space rock
  2. 6. The closest planet to the sun
  3. 8. The hottest planet in the solar system
  4. 10. A term for any small piece of broken asteroid or comet
  5. 12. The spherical outer limit of our solar system where some comets originate
  6. 13. A celestial object that is made of ice and dust