Exploring Gusev Crater with Spirit: Review of science objectives and testable hypotheses

Nathalie A. Cabrol, Edmond A. Grin, Michael H. Carr, Brad Sutter, Jeffrey M. Moore, Jack D. Farmer, Ronald Greeley, Ruslan O. Kuzmin, David J. DesMarais, Marc G. Kramer, Horton Newsom, Charles Barber, Ivan Thorsos, Kenneth L. Tanaka, Nadine G. Barlow, David A. Fike, Mary L. Urquhart, Brian Grigsby, Frederick D. Grant, Olivier de Goursac