Question: In Henry Olerich's, "A Cityless and Countryless World" what planet do the aliens come from?

full_context: Document 1: Utopia (Child novel): Utopia (ISBN  ) is the first solo novel by Lincoln Child published in 2002. It is set in a futuristic amusement park called "Utopia", a park that relies heavily on holographics and robotics. Dr. Andrew Warne, the man who designed the program that runs the park's robots, is called in to help fix a problem. But when he gets there, he finds out that the park is being held hostage by a mysterious man known as John Doe.
Document 2: Libertarian utopia: There have been many attempts and proposals to create a libertarian utopia. Anthony van Fossen writes that every tax haven is a variation on the theme of the sovereign libertarian utopia. The Pacific Islands have seen several attempts, such as the Republic of Minerva. Charter cities have been another proposal for breaking out of conventional political arrangements to create a system with much greater scope for innovation in rules. Robert Nozick's book "Anarchy, State and Utopia" contains a final chapter that describes a pluralistic libertarian utopia. Proposals for an anarcho-capitalist society are sometimes regarded as inherently utopian. David Boaz has argued that the consumer choice facilitated by a free market system would create a framework that could offer thousands of versions of utopia to suit the desires of different people.
Document 3: Garden Cities of To-morrow: Garden Cities of To-morrow is a book by the British urban planner Ebenezer Howard. When it was published in 1898, the book was titled "To-morrow: A Peaceful Path to Real Reform". In 1902 it was reprinted as "Garden Cities of To-Morrow". The book gave rise to the garden city movement.
Document 4: The Ones Who Walk Away from Omelas: "The Ones Who Walk Away from Omelas" is a 1973 plotless, short, descriptive work of philosophical fiction, though popularly classified as a short story, by American writer Ursula K. Le Guin. With deliberately both vague and vivid descriptions, the narrator depicts a summer festival in the utopian city of Omelas, whose prosperity depends on the perpetual misery of a single child.
Document 5: Mars One: The Mars One organization has proposed to land the first humans on Mars and establish a permanent human colony there by 2035.
Document 6: Mars Analogue Research Station Program: The Mars Analog Research Station Program (MARS) is an international effort spearheaded by The Mars Society to establish a network of prototype research centers where scientists and engineers can live and work as if they were on Mars, to develop the protocols and procedures that will be required for human operations on Mars, and to test equipment that may be carried and used by human missions to the Red Planet.
Document 7: UFOs in fiction: Many works of fiction have featured UFOs. In most cases, as the fictional story progresses, the Earth is being invaded by hostile alien forces from outer space, usually from Mars, as depicted in early science fiction, or the people are being destroyed by alien forces, as depicted in the film "Independence Day". Some fictional UFO encounters may be based on real UFO reports, such as "Night Skies". "Night Skies" is based on the 1997 Phoenix UFO Incident.
Document 8: Henry Wright (planner): Henry Wright (1878-1936), was a planner, architect, and major proponent of the garden city, an idea characterized by green belts and created by Sir Ebenezer Howard.
Document 9: Mars analog habitat: A Mars analog habitat is one of several historical, existing or proposed research stations designed to simulate the physical and psychological environment of a Martian exploration mission. These habitats are used to study the equipment and techniques that will be used to analyze the surface of Mars during a future manned mission, and the simulated isolation of the volunteer inhabitants allows scientists to study the medical and psychosocial effects of long-term space missions. They are often constructed in support of extensive Mars analogs (see List of Mars analogs). However, sometimes existing natural places are also valued as Mars analogs, such as a high Earth altitude where the pressure is equal to the pressure at the surface of Mars or a certain cave. Manned Mars habitats are featured in most human Mars missions; an alternative may be terraforming or telepresence.
Document 10: Mor-Tax: Mor-Tax is the name of the planet on which the aliens from the first season of the "War of the Worlds" TV series, the Mor-Taxans, originate. While the show's existence as a continuation from the 1953 film would make the aliens Martians, the first season rewrites this origin due to the supported fact that no intelligent life is evident to exist or have existed on Mars. Their connection to Mars is never mentioned onscreen, though creator/executive producer Greg Strangis has stated in an interview that the aliens used Mars only as a staging point to launch their invasion on Earth; the veterans of the Grover's Mill militia obliviously call them Martians.
Document 11: Ebenezer Howard: Sir Ebenezer Howard {'1': ", '2': ", '3': ", '4': "} ( ; 29 January 1850 – 1 May 1928), the English founder of the garden city movement, is known for his publication "" (1898), the description of a utopian city in which people live harmoniously together with nature. The publication resulted in the founding of the garden city movement, and the building of the First Garden City, Letchworth Garden City, commenced in 1903.
Document 12: Martian: A Martian is a native inhabitant of the planet Mars. Although the search for evidence of life on Mars continues, many science fiction writers have imagined what extraterrestrial life on Mars might be like. Some writers also use the word "Martian" to describe a human colonist on Mars.
Document 13: 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.
Document 14: Herland (novel): Herland is a utopian novel from 1915, written by feminist Charlotte Perkins Gilman. The book describes an isolated society composed entirely of women, who reproduce via parthenogenesis (asexual reproduction). The result is an ideal social order: free of war, conflict, and domination. It first appeared as a serial in "The Forerunner", a magazine edited and written by Gilman between 1909 and 1916. The book is the middle volume in her utopian trilogy; it was preceded by "Moving the Mountain" (1911), and followed with a sequel, "With Her in Ourland" (1916). It was not published in book form until 1979.
Document 15: Mysteron: The Mysterons are a fictional race of extraterrestrials. They are the remnants of the original Mysteron race, extraterrestrial life forms that originated in a galaxy other than the Milky Way and maintained their colony on Mars. They appear in the British science-fiction Supermarionation television series "Captain Scarlet and the Mysterons" (1967–68) and "Gerry Anderson's New Captain Scarlet" (2005), symbolised by ubiquitous projected green rings and the deep bass voice of their human convert, Captain Black.
ground_truth: Mars