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CONCLUSION

Mars   * the fourth planet from the sun * 141 million miles from the sun * 2 moons * largest volcano called the Olympus Mons, over sixteen miles high * has deep canyons, about four miles deep Mars is about half the size of earth. It is a desert except for the ice at the north and south poles. It has tall mountains and deep canyons. the soil is full of rust-colored iron dust. This makes Mars look red. Strong winds blow up bog storms of the red dust. It is very cold on mars. Mars does not have an atmosphere. A year on Mars is 687 Earth-days long. One day is 24 1/2 Earth-days long.