Pluto and Charon and Pluto Fast Flyby

Explanation: There were two versions of this image, one with a spacecraft (Pluto Fast Flyby) and one without (see yesterday's PPOD image). In an inovatove pre-digital-era solution, the spacecraft was painted on gesso coated acetate and then very carefully cut out and spray mounted to the painting. From artist Pat Rawlings: "I didn't usually do this, but I liked the planetary piece so much without the spacecraft that I just had to be able to remove it."

Pluto

Image credit: Pat Rawlings.