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NASA may have unknowingly found and killed alien life on Mars 50 years ago, scientist claims
Live Science via Yahoo News· 9 months agoOne researcher hypothesizes that experiments carried out by NASA's Viking landers in 1976 could have...
If life exists on Mars, don't count on sample-return missions to find it, scientists say
Space via Yahoo News· 4 months agoWhile ambitious plans to return Red Planet samples to Earth are in development, some scientists...