Astronomical Planet Symbols - Smithsonian Institute

This is a terrific mug from the Smithsonian Institution (purchased at the National Air and Space Museum Gift Shop) which shows a night sky - Well, ok, this mug is old and has been used a lot.  The design suggests that the dark area was once dark as night, cut out stars give a great night sky effect.  Once a thermochromatic ink mug has been microwaved, or sat in the sun too long, well this is the effect.

AND, once a hot beverage is poured in, the design changes.  

What you see now are the astronomical symbols which represent each of the 9 (yes, I said 9) planets in our solar system. (Pluto is included in this list as the mug was more than likely designed before it's status change in status to "Dwarf Planet.") At the bottom of the design it also says "National Air and Space Museum."

DESIGN:  Full, 3+ Sided
THERMOCHROMIC: 1 Color
TYPE: Retail