When you're searching for signs of alien life, you'd really like definitive answers.But so far most of humanity's forays into the Solar System seeking signs of life have returned only ambiguity.Take NASA's Viking 1 lander for instance.The agency designed its suite of experiments to find any signs of life, or biosignatures, on the Martian surface, returned a mix of positive and negative results that summed to an indeterminate answer - scientists found no signs of life, but insufficient evidence to say there were no signs to be found.
#back #getty-images #significantly #combination #illustration #experiments #instruments #solar-system #pharmaceuticals #nasas-perseverance-rover
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