Dwarf Planet Ceres Shows Some Bright Spots
Bright spots on Ceres in the Asteroid belt could indicate sub-surface water
Now, images have revealed that these spots most frequently appear at the bottom of impact craters, and this, as well as imaging, has revealed what they might be. According to Dr. Ed Cloutis, from the Department of Geography at the University of Winnipeg, and his colleagues, these are deposits of salt, which are likely carried up from a briny layer of water/ice below the surface when an impact punches through the surface crust.
Researchers were able to observe a "haze" of evaporating water above the salt deposits, suggesting this process continues to be active on Ceres today.