Authors: F Poulet; J-P Bibring; J F Mustard; A Gendrin; N Mangold; Y Langevin; R E Arvidson; B Gondet; C Gomez; M Berthé; S Erard; O Forni; N Manaud; G Poulleau; A Soufflot; M Combes; P Drossart; T Encrenaz; T Fouchet; R Melchiorri; G Bellucci; F Altieri; V Formisano; S Fonti; F Capaccioni; P Cerroni; A Coradini; O Korablev; V Kottsov; N Ignatiev; D Titov; L Zasova; P Pinet; B Schmitt; C Sotin; E Hauber; H Hoffmann; R Jaumann; U Keller; F Forget Journal: Nature Date: 2005-12-01 Impact factor: 49.962