Are red planet named mars.

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Across
  1. 2. is a
  2. 5. Mars is named after the god of ___?
  3. 8. Mars is also know ___?
  4. 10. We have been studying mars for ____?
  5. 11. Mars is red because of the ___ ___?
  6. 12. like Earth.
  7. 14. Mars is hard and rocky, with ___ ___?
  8. 16. ________ have suggested Mars could be terraformed one day.
  9. 17. Mars is considered to be ____ dead.
  10. 18. The ___ around mars is very thin.
Down
  1. 1. Six active ___ are in orbit around Mars?
  2. 3. There are two active _____ on mars?
  3. 4. Happens every 26th months when Earth and Mars are closest to each other.
  4. 6. Beneath the surface of mars is ___.
  5. 7. concept where humans use science to change the atmosphere and
  6. 9. of a planet in order to make it
  7. 13. _____ stands three times as tall as Mount Everest.
  8. 15. _____ from asteroids are evident on the