The craft is expected to reach Ceres in early 2015.
During its month at Vesta, Dawn discovered that the asteroid has completely melted in the past, forming a layered body with an iron core. The craft also found that Vesta had endured two massive collisions in its southern hemisphere over the last 2 million years. The dramatic troughs around Vesta are ripples from these collisions.
Dawn has revealed that Vesta "is a survivor from the earliest days of our solar system," said Christopher Russell of UCLA, Dawn's principal investigator. "We can now say with certainty that Vesta resembles a small planet more closely than an asteroid."Los Angeles Times