A double standard about contamination is keeping us from verifying signs of Martian life
NASA has announced that the properties of a rock in Jezero Crater qualify as a potential biosignature. The NASA Astrobiology Roadmap defines a biosignature as “an object, substance, and/or pattern whose origin specifically requires a biological agent.” By that standard, a confirmed biosignature would be as close as we can get to proof of alien […]
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Published by SpaceNews on 09/22/2025
