Dawn is an unmanned NASA space probe. It has orbited and studied the asteroid Vesta, which is in the asteroid belt. Dawn was launched on September 27, 2007 at Cape Canaveral Air Force Station aboard a Delta 7925-H rocket. It then travelled to Mars for a gravity assist, making its closest approach to Mars on February 2009.
One of the photos Dawn took of Vesta Next, Dawn set off for Vesta. It went into orbit in July, 2011. In September 2012, Dawn left Vesta and headed for Ceres, a dwarf planet in the asteroid belt