Mars was created from the material that was swirling around our sun. this happened about 4.6 billion years ago. It contains most of the same ores and minerals that the earth contains such as iron, a fair amount of iron oxide and a lot of silicates (Silicon, Oxygen and a lot of other stuff).
             Mars' atmospheric composition is:
             The average recorded temperature on Mars is -63° C (-81° F) with a maximum temperature of 20° C (68° F) and a minimum of -140° C (-220° F).
             Barometric pressure varies at each landing site on a semi-annual basis. Carbon dioxide, the major constituent of the atmosphere, freezes out to form an immense polar cap, alternately at each pole. The carbon dioxide forms a great cover of snow and then evaporates again with the coming of spring in each hemisphere. When the southern cap was largest, the mean daily pressure observed by Viking Lander 1 was as low as 6.8 millibars; at other times of the year it was as high as 9.0 millibars. The pressures at the Viking Lander 2 site were 7.3 and 10.8 millibars. In comparison, the average pressure of the Earth is 1000 millibars.
             Mars is similar to Earth in many ways. Although it has a much smaller diameter compared to Earth (6739 kilometers), Mars has polar ice caps very similar to Earth's. The Martian year is 687 Earth days, but a Martian day is 24.6 hours. The Martian equatorial zone can reach temperatures of 20 degrees Celsius, although the average temperature on Mars is -63 degrees C. At the Viking 2 landing site, a thin layer of water frost covered the ground each winter.
             Mars has two moons, Phobos and Deimos which are named after creatures from greek mythology. Mars' moons are not native to M
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