The level of detail NASA's Dawn spacecraft of the surface of dwarf planet Ceres is truly staggering, but even as the images capture the mysterious bright spots, scientists are still no closer to figuring out exactly what they are.
From just under 1,500 kilometres above the surface, Dawn snapped this photo of Occator crater on one of its most recent orbits. The Sun is behind the spacecraft and off to the right, throwing the right edge of the immense crater into shadow.