This was
your sky.

Salt Water Remnants on Ceres

Ceres, the largest asteroid in the asteroid belt, was thought to be composed of rock and ice. It also had unusual bright spots on its surface, clearly imaged during the Dawn mission's approach in 2015. Analyses of Dawn images and spectra indicated these spots arise from the residue of highly reflective salt water that used to exist on Ceres' surface but evaporated. Recent analysis indicates Ceres has underground pockets of water.