1. 4th planet from the sun
  2. NASA’s Viking program vehicles landed on mars in 1976.
  3. Mars has two moons called Deimos and Phobos.
  4. Phobos will probably crash into mars in about forty million years.
  5. The minimum distance between the earth and mars is approximately 33.9 million miles.
  6. A mars year is 687 earth days.

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