According to a new study conducted by NASA, minerals in sedimentary rocks found on mars (by their rover "Opportunity") suggest that they were formed from very salty water, even saltier than the oceans we have on Earth. This suggests that the chance of life in these oceans becomes slimmer, as the environment was more hostile than they believed.
"The punchline is it was really salty," Knoll told a gathering of reporters here at the annual meeting of the American Association for the Advancement of Science, "salty enough that only a handful of terrestrial organisms would have a ghost of chance of surviving there when conditions were at their best." - Andrew Knowl, Harvard University
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