The Hubble Space Telescop imaged Ceres, shown above, and Vesta, two massive asteroids in the asteroid belt between Mars and Jupiter, using Hubble's Wide Field Planetary Camera 2. Astronomers are using these images to prepare for the Dawn spacecraft's journey to the two asteroids. After launching July 7 on a four-year journey, Dawn will orbit Ceres in 2015.
NASA, ESA, J. Parker (Southwest Research Institute), and L. McFadden (Univ. of Maryland)