NASA rover finds strongest evidence yet of ancient life on Mars
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https://www.cbc.ca/news/science/mars-potential-life-1.7630035
A sample obtained by NASA's Perseverance rover of rock formed billions of years ago from sediment on the bottom of a lake contains potential signs of ancient microbial life on Mars, according to scientists, though the minerals spotted in the sample can also form through non-biological processes.
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But Hurowitz offered some words of caution.
"The reason, however, that we cannot claim this is more than a potential biosignature is that there are chemical processes that can cause similar reactions in the absence of biology, and we cannot rule those processes out completely on the basis of rover data alone," Hurowitz said.
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