Source: http://www.universetoday.com/120244/ceres-white-spots-multiply-in-latest-dawn-photos/
on MAY 11, 2015
The latest images taken by the Dawn spacecraft shows that the pair of bright, reflective spots on the dwarf planet Ceres are comprised of even more spots. Ceres is the largest object in the asteroid belt, which lies between the orbits of Mars and Jupiter, and makes up approximately a third of the mass of the asteroid belt.[1]
[1]Wikipedia, “Ceres.”