New dwarf planet visitor from the Oort Cloud

Ira Flatow interviews astronomer Chad Trujillo about a new dwarf planet that he and his team discovered in the outer reaches of our solar system: Dwarf Planet Found at the Edge of the Solar System – Science Friday

More about the discovery:

The orbits of Pluto, Eris, Sedna, and 2012 VP113Unmannedspaceflight.com user Lucas, via Planetary Society
This diagram shows the relative sizes of the
orbits of Pluto and the dwarf planets
Eris, Sedna, and 2012 VP113