RT @coreyspowell: The phases of dwarf planet #Ceres, seen for the first time ever by @NASA_Dawn. 1.usa.gov/8ZOrMv http://t.co/AmmYHVuuHC
RT @coreyspowell: The phases of dwarf planet #Ceres, seen for the first time ever by @NASA_Dawn. 1.usa.gov/8ZOrMv http://t.co/AmmYHVuuHC