Latest dispatch from Pluto reveals frozen plains, icy hills and more
New images give shape to moon Nix and hint at dwarf planet’s geology
![close-up of Pluto's surface](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/07/cc_pluto-heart-zoom_free.jpg?fit=860%2C460&ssl=1)
PLUTO’S PLAINS A craterless plain etched by a network of shallow troughs lies within Pluto’s “heart,” as seen in this image taken July 14 when New Horizons was 77,000 kilometers from the dwarf planet.
NASA, JHUAPL, SWRI