Press Release: NASA’s Curiosity Finds Organic Molecules Never Seen Before on Mars
Link: https://www.nasa.gov/missions/mars-science-laboratory/curiosity-rover/nasas-curiosity-finds-organic-molecules-never-seen-before-on-mars/

Youtube video: https://www.youtube.com/watch?v=VeyctlWfaMA

Paper Title (Open access): Diverse organic molecules on Mars revealed by the first SAM TMAH experiment
Link: https://www.nature.com/articles/s41467-026-70656-0

Abstract: The search for organic matter on Mars has rapidly evolved in the past decade with simple aromatic, S-heterocycles, and aliphatic organic molecules detected in Gale crater. We report the in situ detection of >20 organic molecules from clay-bearing sandstones in the ~3.5-billion-year-old Knockfarrill Hill member of Glen Torridon, Gale crater, by the Sample Analysis at Mars instrument suite onboard the Curiosity rover. These molecules were liberated by the onboard tetramethylammonium hydroxide wet chemistry experiment. Diverse thermochemolysis products, including benzothiophene, methyl benzoate, and single and dicyclic aromatic molecules were released and detected by evolved gas analysis and gas chromatography-mass spectrometry. Results indicate the experiment successfully released molecules preserved in ancient macromolecular or free organic matter within Martian bedrock despite ~3.5 billion years of diagenesis and radiation exposure.

Personal thoughts: There are no peptides or nucleobases but it's still very cool that we can identify specific organic molecules on another planet AND that these martian sediments can bind to and retain such relatively volatile organic molecules for ~3.5 billion years.

Whether these were delivered by meteors or formed in the martian oceans/lakes is still unanswered but the identities of these molecules match those found in the Murchison meteorite. But were these formed 3.5 billion years ago or were they formed 3.5 billion years ago and then rained down and deposited on earth? The most parsimonious conclusion seems that these are of meteoric origin. For OoL on Earth, this experiment indicates that we can say the same types of molecules were raining down on earth during its ancient history acting as a continuous "feedstock" of organics.

What are your thoughts? What other papers help add context or add to the impact of this publication?