Earth is the home planet of the human race and the planet from where Team J.E.T. originates at the beginning of the TV series. Coach Ray runs / operates the Scan2Go Training Facility on the Earth.
The Final Grand Prix takes place on Earth beginning in episode Start of the Final Grand Prix. Team J.E.T. arrives on Earth to participate in the Final Grand Prix beginning with episode Repatriation! Rescue! Withdrawal!.