ONE OF THE REMARKABLE DISCOVERIES BY THE DAWN MISSION AT CERES ARE PERENNIALLY SHADOWED REGIONS (PSRS) AND BRIGHT (ICE) DEPOSITS WITHIN THEM. THE PSRS CAN BE DELINEATED BY COMPUTATIONAL RAY-TRACING BASED ON AVAILABLE TOPOGRAPHIC MODELS AND AS THE
$309,981FY2021National Aeronautics and Space AdministrationNASA
Planetary Science Institute, Tucson AZ