NASA detects possible polar cap on Pluto

Pluto may have a polar ice cap, NASA scientists said Wednesday after analyzing the latest images from an unmanned spacecraft that is approaching the distant dwarf planet. The New Horizons spacecraft will fly by Pluto on July 14, and has already begun sending back blurry pictures of the celestial body and its Texas-sized moon, Charon. NASA combined 13 images taken over the course of six days in April with the New Horizons Long Range Reconnaissance Imager, or LORRI, to make a brief movie.