Pluto and Charon: New Horizons’ Dynamic Duo

 http://www.nasa.gov/image-feature/pluto-and-charon-new-horizons-dynamic-duo

They’re a fascinating pair: Two icy worlds, spinning around their common center of gravity like a pair of figure skaters clasping hands. Scientists believe they were shaped by a cosmic collision billions of years ago, and yet, in many ways, they seem more like strangers than siblings.