Ceres: The Smallest and Closest Dwarf Planet Ceres: The Smallest and Closest Dwarf Planet Ceres: The Smallest and Closest Dwarf Planet Ceres: The Smallest and Closest Dwarf Planet Space.com solar system’s smallest dwarf planet Ceres Ceres Ceres Space.com Ceres Ceres Space.com Ceres Ceres: The Smallest and Closest Dwarf Planet Ceres: The Smallest and Closest Dwarf Planet Ceres dwarf planet