What chemical biosignatures has the Perseverance rover found on Mars, and how do scientists distinguish between biological and non-biological origins?
NASA’s Perseverance rover has been busy exploring Jezero Crater, and its instruments have spotted a whole mix of chemical clues that could be ancient microbial fingerprints—though they’re still just “potential” biosignatures the most promising ones were flagged in February 2026 15 . Below is what the rover has found, and...
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