Mars, (commonly known as the red planet), is the most probable planet after earth to sustain life. However, there are a lot of challenges we need to overcome in order to make a trip to this planet. Here are a few of them. Considering discoveries made so far, the planet is known to contain water. The water is however in the form of ice as the atmospheric pressure of mars is less than 1% of ours here on earth. The amount of water on mars (as ice and hydroxyl ions) if converted, could cover the entire planet's surface to a depth of about 600 meters. The atmosphere of Mars consists of about 96% carbon dioxide, 1.93% argon and 1.89% nitrogen along with traces of oxygen and water. The atmosphere is quite dusty, containing particulates about 1.5 µm in diameter which give the Martian sky a tawny color when seen from the surface. This is obviously not the kind of air we are used to inhaling, besides only a limited ...
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