Unique, Antique Vesta
Most asteroids are collisional rubble from eons past, and few of them have survived intact. Vesta, the second most massive asteroid, is the only differentiated,, Read more.
The Orbital Search for Altered Materials on Mars
The Martian surface is dominated by primary igneous minerals common in basaltic rocks. Limited chemical alteration exists in fine-grained dust, and is likely in, Read more.
Water on Mars
Water on Mars exists at the poles and in the subsurface. It has interacted with crustal rocks, providing geomorphological, geochemical, and mineralogical insights, Read more.