NASA announced yesterday that Mars was once a wet planet. Based on observations of the soil, rocks and terrain around the rover Opportunity, scientists, even former skeptics are saying that there is no doubt. Where there is water (and where it is available to certain chemical processes and in the presence of the appropriate molecules), life is likely to have arisen.
Now we wait. Will there be gross signs, observable by the instruments on Opportunity, of life? Or will we have to send further exploratory vehicles able to do more robust experiments and longer traverses of the Martian terrain? Such a finding would be the biggest news ever in history...
QUESTION: Anyone familiar with the progression in the title of this post?
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