Water, Water Everywhere on Dwarf Planet Ceres

New observations have provided direct evidence that in water ice is ubiquitous in the surface and shallow subsurface of this massive asteroid. Ceres is the largest object in the asteroid belt that lies between Mars and Jupiter, and has long been suspected of containing significant amounts of water — estimates projected up to 30 percent of its total mass. Evidence has pointed to water ice being mixed with the rock on Ceres' surface, and in a few rare cases, more concentrated patches of expo