This image of the asteroid Ceres was made by the Hubble Space Telescope in December 2003 and January 2004. Ceres was declared a "dwarf planet", along with Pluto and Eris, in 2006.
Image courtesy of NASA, ESA, J. Parker (Southwest Research Institute), P. Thomas (Cornell University), L. McFadden (University of Maryland, College Park), and M. Mutchler and Z. Levay (STScI).