Mars (no spaces in the answers)

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Across
  1. 2. It's atmosphere is mostly made up of ____.
  2. 4. The name of the rover NASA launched in 2011.
  3. 9. It is called this because of the iron in it's soil.
  4. 11. The largest _____ on mars (and in the entire Solar System) is named Olympus Mons.
  5. 12. Mars is the ______ planet from the sun.
Down
  1. 1. The name of Mar's biggest moon.
  2. 3. Mar's _____ is 4,220 miles.
  3. 5. A year on Mars is almost _____ as long as a year on Earth.
  4. 6. The name of Mar's smallest moon.
  5. 7. The largest _____ on mars (and in the entire Solar System) is named Valles Marineris.
  6. 8. The only planet smaller than Mars.
  7. 10. Mars is named after the ______ god of war.