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Scientists detected a potential biosignature on Mars – an astrobiologist explains what these traces of life are, and how researchers figure out their source

  • Written by Amy J. Williams, Assistant Professor of Geology, University of Florida
Scientists detected a potential biosignature on Mars – an astrobiologist explains what these traces of life are, and how researchers figure out their sourceNASA’s Perseverance rover explores Mars' Jezero Crater.NASA/JPL-Caltech/MSSS, CC BY-NC

As the Perseverance rover traversed an ancient river valley in Mars’ Jezero Crater back in July 2024, it drilled into the surface and extracted a sample from of a unique, striped rock called Chevaya Falls. The rover’s instruments then analyzed...

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