Colonization of Mars

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Across
  1. 3. a remotely operated vehicle
  2. 8. A collection of the Sun, eight planets, and their moons, comets, asteroids, meteroids,and dwarf planets revolving around the Sun.
  3. 9. the person who supervises a space mission from Mission control
  4. 12. Colonizing
  5. 13. a layer of gases surrounding a planet
  6. 15. Earth is _than Mars
Down
  1. 1. an artificial body placed in orbit around earth or moon or another planet in order to collect information or for communication
  2. 2. A multi-step process that allows a safe landing
  3. 4. A day on mars is
  4. 5. than a day on Earth
  5. 6. Mars is _ than Earth
  6. 7. The condition of being populated with excessively large numbers
  7. 10. The amount of time it takes to get to Mars
  8. 11. to bring into action and make usable
  9. 14. It could_ the problems of overpopulation on Earth