Video: The Dawn misison to Vesta and Ceres

An overview of NASA’s Dawn mission, the first time a probe has orbited two different celestial bodies:

NASA’s Dawn spacecraft turned science fiction into science fact by using ion propulsion to explore the two largest bodies in the main asteroid belt, Vesta and Ceres. The mission will end this fall, when the spacecraft runs out of hydrazine, which keeps it oriented and in communication with Earth. For more info on the mission, visit