To think that something as common as ordinary water is the key that we are looking for--the key to finally determining once and for all if there was or is life on Mars. More than any other place in our solar system, Mars is the most like Earth and probably is the most likely to have had life on it one time or another. We know that Mars has polar ice caps and clouds, which means that there is water, but on my voyage what we would need to find is water in its liquid state because that is the key to the presence of life.
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