title: Planetary science. Observing our origins.
authors.affiliation: Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, DC 20015, USA. fciesla@ciw.edu
authors.forename: Fred J
authors.initials: FJ
authors.lastname: Ciesla
mesh_terms: D019419:Evolution, Planetary; D009930:Organic Chemicals; D016082:Solar System; D014867:Water
chemical_list: D009930:Organic Chemicals; D014867:Water