title: Planetary science. Proof for water, hints of life?
authors.affiliation: U.S. Geological Survey, Flagstaff, AZ 86001, USA. jkargel@usgs.gov
authors.forename: Jeffrey S
authors.initials: JS
authors.lastname: Kargel
mesh_terms: D001272:Atmosphere; D004602:Elements; D018559:Exobiology; D005118:Extraterrestrial Environment; D019015:Geologic Sediments; D006863:Hydrogen-Ion Concentration; D019369:Life; D018535:Mars; D008697:Methane; D008903:Minerals; D018531:Spacecraft; D013431:Sulfates; D014867:Water
chemical_list: D004602:Elements; D008903:Minerals; D013431:Sulfates; D014867:Water; D008697:Methane