Earth and Space

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Across
  1. 3. no longer considered a planet
  2. 5. closest planet to the sun
  3. 7. the moon goes through lots of these
  4. 9. space explorer
  5. 10. the Earth's only natural satellite?
Down
  1. 1. centre of our solar system
  2. 2. the sun is the centre of what?
  3. 4. Bright lights at night
  4. 6. the red planet
  5. 8. the blue planet