... Credit Copyright: NASA , JPL-Caltech , UCLA , MPS,DLR,IDA - Composition: Justin Cowart Explanation: Dwarf planet Ceres is the largest object in the Solar System's main asteroid belt , with a diameter of about 950 kilometers (590 miles). ... Two of Ceres' famous mysterious bright spots at Oxo crater and Haulani crater are near center and center right of this view. ... Bright Spots Resolved in Occator Crater on Ceres . ... Dark Craters and Bright Spots Revealed on Asteroid Ceres . ...