Ice? Diamonds? Salt-lick for giant nocturnal astro-worms that follow the terminator around the dwarf planet so they’re always in darkness (never photographed by NASA’s Dawn probe). NASA wants your guess: http://www.jpl.nasa.gov/dawn/world_ceres/
New Imagery of the bright spots of the dwarf planet’s Occator crater are the highest detailed to date with a resolution of 450 feet (140 meters) per pixel. NASA’s topographic animations show elevations reach up to 4 miles in the highest terrains.
Credit: NASA/JPL-Caltech/Edited by Space.com’s @SteveSpaleta