Those bright mystery spots aren’t the only ones on Ceres. Recent photos posted on JPL’s Photojournal site feature a spectacular rayed crater resembling the familiar lunar craters Kepler and Copernicus. Lunar rays are bright because they contrast with their older surroundings which have been darkened by exposure to solar and cosmic radiation. Impacts expose fresh material from below the surface … Continue reading "Ceres Has Lots of Bright Spots"