Human mission to Mars propellant from the Martian Atmosphere. This proposal drew on concepts developed by the former "Case for Mars" conference series. Over the next decade, Zubrin developed it into a mission concept, Mars Direct, which he presented in a book, "The Case for Mars" (1996). The mission is advocated by the Mars Society, which Zubrin founded in 1998, as practical and affordable. In 1991 in Toulouse, France, the International Space University studied an international human Mars mission. They proposed a crew of 8 traveling to Mars in a nuclear-powered vessel with artificial gravity provided by rotation. On the surface, 40 tonne habitats
Red Planet Mars staff at "Variety" liked the film, writing, "Despite its title, "Red Planet Mars" takes place on terra firma, sans space ships, cosmic rays or space cadets. It is a fantastic concoction [from a play by John L. Balderston and John Hoare] delving into the realms of science, politics, religion, world affairs and Communism...Despite the hokum dished out, the actors concerned turn in creditable performances." "The New York Times", while giving the film a mixed review, wrote well of some of the performances, "Peter Graves and Andrea King are serious and competent, if slightly callow in appearance, as the indomitable scientists.