Pluto’s dark side reveals clues to its atmosphere and frost cycles
Planetary scientists used light from Pluto’s moon Charon to illuminate the shadows
As the New Horizons spacecraft sped past Pluto, it looked back and took this silhouetted shot. Along with newly processed images that provide a dim peek at the planet’s dark side, the images reveal details of Pluto's hazy nitrogen atmosphere.
SwRI, JHUAPL, NASA