NASA-Funded Study Targets Alaska’s Frozen Dunes to Uncover Clues to Life on Mars and Titan - SynBioBeta
Summary
Southwest Research Institute (SwRI) has secured a three-year, $2.99 million NASA grant to study frozen sand dunes in Alaskaenvironments that mirror conditions on early Mars and Saturns moon Titan. These conditions closely resemble those found on other planetary bodies.One key target of the study is perched waterliquid trapped above an impermeable layer of ice, carbonates, or fine-grained sediments like clay. The team will use advanced geophysical techniques to map the subsurface and locate these deep, nutrient-poor but moisture-rich zonesprime candidates for microbial life.To identify biosignatures, the researchers will deploy state-of-the-art analytical instruments, including: Raman Spectroscopy: SwRIs Astronaut Raman for In Situ Resource Utilization and Astrobiology (ARIA) instrument, developed by Dr. Charity Phillips-Lander, will be used to analyze mineralogy and detect organic compounds. Adenosine Triphosphate (ATP) and DNA Analysis: Measuring ATP, a universal biomolecule in living organisms, will provide insights into microbial activity, while total DNA quantification will estimate microbial biomass.The ARRAKIS team will conduct field studies in March and late summer of 2025, capturing seasonal variations in microbial activity within the dunes.NASAs upcoming missions, including the proposed Mars Life Explorer, will rely on multiple detection techniques to confirm the presence of life. By testing these methods in terrestrial environments similar to those on Mars and Titan, the ARRAKIS project will refine strategies for future space exploration.Although we have much to learn about life deep within frozen sand dunes, perched liquid water at high elevations could serve as a refuge for life in an Arctic desert, Dinwiddie said.