E.V. Day visited the Jet Propulsion Laboratory to learn about the Mars Exploration Rovers. She so intrigued the Mars scientists that she was
given a sample rover wheel to work with in creating a piece of art titled "Wheel of Optimism" for NASA. Day took the wheel and created a
Martian world within it complete with organic plant life, rocks and a Martian landscape in the background. Day poetically grapples with the
age old question of whether life on Mars exists or whether it is just a figment of our science fiction imaginations.