The planet Earth (or "Dirt" as it is sometimes called) is the rumored home of all mankind. Humanity has spread far and wide throughout the galaxy, so Earth has become a legend, a myth, somewhat like Atlantis is to us, and is considered by some to not have existed at all. Slippery Jim gets a chance to visit it, however in The Stainless Steel Rat Saves The World, traveling back in time to New York in the mid-1980s and to Napoleonic France.