Earth is the third planet from the sun. It is where the majority of the series takes place. Huggy was flying by it when a baby who snuck on board startled him, and caused him to crash there. The planet has been invaded by other aliens such as Miss Power. Sometimes adventures take place outside the planet's atmosphere, such as when WordGirl has flown into space, or when villains have plotted to conquer the moon. It is inhabited by people, plants and animals. It is unknown how much different Earth in the series is from Earth in the real world.