Edmond A. Grin (January 26, 1920 – August 17, 2022[1]) was a Swiss American hydraulic engineer and planetary scientist, best known for his contributions to NASA’s Mars exploration missions.
He studied civil engineering at the Swiss Federal Institute of Technology in Lausanne (EPFL), earning his PhD in 1947, specializing in large dam construction and hydrogeology.
His background in hydrogeology positioned him as a key figure in the study of Martian water systems, contributing to research on Mars' past habitability.
In collaboration with his wife, Nathalie Cabrol, he co-led expeditions to Earth's extreme environments, such as the Atacama Desert and high-altitude lakes in the Andes, to study conditions analogous to Mars.
His legacy includes pioneering contributions to civil engineering and planetary science, as well as his relentless curiosity about life on other planets.