This is the newest image of the main bright spots on dwarf planet Ceres taken by the Dawn spacecraft. It was taken on May 16, 2015, with a resolution of 700 metres (2,250 feet) per pixel. The second spot on the right can now be seen to be several smaller spots close together.
It still isn’t known what these (and a few other) spots are, but a leading hypothesis is patches of ice or salt. Dawn will continue to take more images at higher resolutions in the weeks and months ahead as it lowers its orbit closer to Ceres’ surface.