A Data-Centered Framework for Biosignatures: Amino and Fatty Acids as Guides in the Search for Extraterrestrial Life

To the point

Researchers propose a data-centered approach to searching for alien life that focuses on how biosignatures are organized rather than just whether they exist, using amino acids and fatty acids and noting that life tends to make amino acids more diverse and evenly distributed while fatty acids are less diverse and less evenly distributed, a pattern observed by Fabian Klenner and Gideon Yoffe, though abiotic processes can mimic these signals and broader molecular inventories are needed; the approach can guide investigations and has practical applications such as Europa Clipper’s Surface Dust Analyzer, though it currently covers only these two molecule classes and cannot by itself confirm life on exoplanets or distant worlds, though it could be informative for ancient Mars.