In Henry Olerich's, "A Cityless and Countryless World" what planet do the aliens come from?
Henry Olerich Henry Olerich (1851–1927) was a utopian author from Nebraska. In his best known novel, "A Cityless and Countryless World" (1893), a Martian lands on earth to teach humans how to create paradise. The method was to build houses that could hold 1,000 people, who would collectively farm and work.
Earth in Planet 51 In the 2010 Spanish-British-American movie "Planet 51", an American astronaut lands on an Earth-like planet, but the planet is populated by green human-like extrateterrestrials, who live in an era similar to the American 1950s and are very afraid of terrestrial-like "aliens" from their popular culture.