I have read a lot of literature concerning manned missions to the Moon, Mars, and the Jovian moons. Something I have not heard much about, despite it's relative distance and interesting composition, is a manned flight to Ceres.
What sort of engineering challenges would be posed by landing on Ceres? The diagram provided by Wikipedia suggests a thin, dusty crust with an inner layer of water-ice. Could a landing conceivably disrupt the crust in that area, and how could a manned team study geology there?