“You are the salt of the earth. But remember that salt is useful when in association, but useless in isolation.” -Israelmore Ayivor
When NASA’s Dawn spacecraft began photographing Ceres, one big surprise emerged: the presence of a spectacularly and unusually bright spot at the bottom of Occator crater. As we got closer, we discovered it was a series of spots in the lowlands of the crater bed, and that there were other suspicious, smaller bright spots elsewhere on the surface.
The science is now in, and it’s not self-luminous, nor is it ice of any type, but rather these are salt crystals, deposited and brought to the bottom by water that solidifies on the crater floor.