"we may anticipate finding [macromolecular carbon] in old Martian rocks too, so we are searching for these organic macromolecules on Mars and other planetary bodies to determine whether the necessary chemical ingredients and environmental conditions to support life have ever existed there."
https://www.space.com/astronomy/mars/did-nasa-just-find-evidence-of-ancient-life-on-mars-perseverance-rover-spots-complex-carbon-in-red-planet-rocks
#LifeOnMars
Did NASA just find evidence of ancient life on Mars? Perseverance rover spots complex carbon in Red Planet rocks
"Measurements of two mudstones show hundreds of organic detections, making this the most robust organic detection in Jezero crater."
TrèsFluke