NASA may have unknowingly found and killed alien life on Mars 50 years ago, scientist claims
After landing on the Red Planet in 1976, NASA's Viking landers may have sampled tiny, dry-resistant life-forms hiding inside Martian rocks
NASA’s Perseverance Rover finds preserved organic molecules on Mars
It's not preserved matter from biological organisms, but the discovery is a boost to the rover's mission: finding signs of ancient life on Mars
‘Building blocks of life’ discovered on Mars in 10 different rock samples
NASA's Perseverance rover has found a diverse menagerie of organic molecules in a Martian crater