NASA’s Perseverance Discovers Organic Carbon in Jezero Mudstones with Redox-Driven Mineral Textures Hinting at Possible Martian Biosignatures

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Researchers report that Perseverance found Jezero Crater mudstones with organic carbon and textures that could be biosignatures, including iron phosphate and iron sulfide formed by post‑depositional redox processes that may reflect microbial activity or abiotic chemistry, and they call for further core analysis with Earth instruments to determine the origin of the minerals and organics and what this says about ancient Martian habitability.

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Life on Mars? NASA discovers potential biosignatures in Martian mudstones

NASA’s Perseverance rover has discovered mudstones in Mars’ Jezero Crater that contain organic carbon and unusual textures hinting at possible biosignatures. These findings suggest that ancient Martian environments may have supported chemical processes similar to those on Earth, where microbial life thrives. While the team stresses they have not discovered evidence of life, the rocks show chemical reactions and mineral formations that could point to biological activity.