 Human mission to Mars, the human mission to Mars has been the subject of science fiction, bare of space engineering, and scientific proposal since the 19th century. The plans comprise proposals to land on Mars, eventually settling on and terraforming the planet, while utilizing its moons, Phobos and Dimos. The exploration of Mars has been a goal of national space programs for decades. Preliminary work formations that would involve human explorers has been undertaken since the 1950s, with planned missions typically being stated as taking place 10 to 30 years in the future when they are drafted. The list of crude Mars mission plans shows the various mission proposals that have been put forth by multiple organizations and space agencies in this field of space exploration. Plans have varied from scientific expeditions in which way small two to eight group visits Mars for a period of a few weeks or a year, to the permanent colonization of Mars. In the 2010s, numerous Americans, European, and Chinese agencies were developing proposals for human missions to Mars. They are now developing and testing the technologies. Mars in fiction is a frequent target of exploration and settlement in books, graphic novels, and films.