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Mars is a planet.
After Lisa won the school speeling contest she received a model of the planet Mars. It was a dodgeball with MARS spelled on it.
Nelson flew to Mars where Eddie was working on a secret project.
- Episode – "I'm Spelling As Fast As I Can"
- Episode – "Holidays of Future Passed" (picture)
- Episode – "The Marge-ian Chronicles"
- Episode – "From Russia Without Love"
- Episode – "The Winter of Our Monetized Content" (poster)