CRYOVOLCANO? Sodium chloride and other salts appear in Cerealia Facula, the brightest spot on the dwarf planet Ceres. The highly reflective blotch covers the dome at the center of Occator Crater. The salts may be residue from brines that welled up recently - or are even still ascending - through various fractures. This mosaic combines images taken by NASA's Dawn spacecraft from different altitudes. sk yand tele scope .o r g * NOVEMBER 2023 35http://skyandtelescope.com