The Planets

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Across
  1. 2. Our planet is called (5)
  2. 4. I am the closest to the sun (7)
  3. 5. I am a red planet (4)
  4. 7. A small rock body orbiting the sun (8)
  5. 8. The planets are apart of a ..... system (5)
  6. 10. Earth, Venus and Mars are all (7)
  7. 12. I am a gas giant (7)
  8. 14. Way Our galaxy is called..(8)
  9. 15. I am the second planet from the sun (5)
  10. 17. An object of ice and dust in space (5)
  11. 18. The planets revolve around me (3)
Down
  1. 1. I am the seventh planet from the sun (6)
  2. 3. You need to look through me to see into space (9)
  3. 6. Outer..... (5)
  4. 8. I shine in the night sky (5)
  5. 9. I am the largest planet in the solar system (7)
  6. 11. The subject involving planets (7)
  7. 13. I am often not considered a main planet (5)
  8. 16. You see me most at night (4)