Water Ice Found On Dwarf Planet Ceres, Hidden in Permanent Shadow

Just like the moon and Mercury, the largest asteroid in Earth's solar system, Ceres, has cold pockets of perpetual darkness on its surface where researchers have now detected ice, a new study finds. With a diameter of about 585 miles (940 kilometers), Ceres is referred to as both an asteroid and a dwarf planet. It is the dwarf planet closest to Earth and the largest member of the solar system's main asteroid belt, located between Mars and Jupiter.