"Ceres, our solar system's only dwarf planet"
Uh, wasn't Pluto also classified as a dwarf planet, or are you still fighting the Man on that one?
There's a handful of other probable ones (Eris? can't remember the rest) too.
NASA's Dawn spacecraft has left the gravitational pull of the giant asteroid Vesta behind after over a year of study and is rocketing towards the dwarf planet Ceres. The satellite, launched in September 2007, has been exploring and mapping Vesta for the first time, showing agency boffins an exotic and diverse building block …