Mars and earth

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Across
  1. 4. The Red Planet
  2. 9. the number of moons mars have
  3. 10. Another name for the earth
  4. 11. shape of the Earth and Mars
  5. 13. third planet from the sun
  6. 14. This makes Mars appear as tho it is red
  7. 15. The moon that won't hit mars
Down
  1. 1. the meaning of Earth
  2. 2. the layer of gas that covers the planet
  3. 3. The only planet that can sustain human life
  4. 5. The guy mars is named after
  5. 6. the number of moons the earth has
  6. 7. thefourth planet from the sun
  7. 8. the guy who discovered mars
  8. 12. the moon that gonna hit Mars