Pluto and Charon

Explanation: This painting of Pluto and Charon was the only artwork distributed by NASA Educational Outreach in their Solar System litho sets until recently. The artwork, completed in 1992 and painted completely by airbrush, was done under the technical guidance of New Horizons principal investigator, Alan Stern, before the mission was funded. Albedo maps from Marc Buie and David Tholen were used to get the general tonal range.

Pluto

Image credit: Pat Rawlings.