The Grandest Canyon is the first half of the thirteenth episode of Ready Jet Go!.
When the Propulsions are forced to watch a slide show of the Petersons' vacation to the Grand Canyon, they’re inspired to take their own trip to Mars to explore Valles Marineris—the largest canyon in the Solar System!
- Jet Propulsion
- Sean Rafferty
- Sydney Skelley
- Sunspot Propulsion
- Mindy Melendez
- Celery Propulsion
- Carrot Propulsion
- Face 9000
- Mitchell Peterson
- Mr. Peterson (debut)
- Lillian (debut)
Mars has deeper canyons than our own Grand Canyon on Earth. The deepest canyon in our solar system exists on Mars, called Valles Marineris.
- Mindy's friend Lillian makes an appearance in this episode. Lillian happens to be a reference to one of the shorts that Craig Bartlett made for Sesame Street.
- This episode reveals that the Petersons went on vacation in Arizona for a few days.
- Mitchell and his dad are shown, but for whatever reason, Mitchell's mom is nowhere to be seen.
- Lillian and Mr. Peterson debut in this episode. Prior to this, Mr. Peterson made a cameo in Sunspot's Night Out.