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NASA has been looking for the signs of water and hence life on the Mars and they did find evidence of ancient lakes that no longer exist (paleolakes) there.
Image Credit: mars.nasa.gov
But a new study suggests that still more than 70% of lakes on Mars which are smaller lakes, haven’t yet been detected.
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The earlier belief that the Mars craters housed its paleo lakes is now doubtful. Scientists admit that most of Mars’ paleo lakes haven’t been located till now.
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Scientists are now sceptical about correlating the presence of water and life on Mars directly. It’s because the nature of water on Earth is different from that of the Mars.
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The nature of lakes itself is different between the two planets. Mars doesn’t house lakes on high altitudes in the form of ice like Earth does.
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Martian lakes are quite unique and peculiar. It’s quite different from that of the Earth. A major reason for this is that Mars’ gravity is only 40% that of the Earth.
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Weaker gravity, no vegetation, and lesser sunlight, makes Mars’ lakes murkier and a lot more salty. Thus, it cannot be claimed that Martian waters supported life.