Nuclear submarine nuclear-powered submarine was first proposed in the United States Navy by the Naval Research Laboratory's Ross Gunn in 1939. Construction of the world's first nuclear powered submarine was made possible by the successful development of a nuclear propulsion plant by a group of scientists and engineers at the Naval Reactors Branch of the Bureau of Ships and the Atomic Energy Commission. In July 1951 the U.S. Congress authorized construction of the first nuclear-powered submarine, "Nautilus", under the leadership of Captain Hyman G. Rickover, USN (sharing names with Captain Nemo's fictional submarine in Jules Verne's "Twenty Thousand Leagues Under the Sea",
Jules Verne "Voyages extraordinaires" series continued for several years afterwards at the same rate of two volumes a year. It was later discovered that Michel Verne had made extensive changes in these stories, and the original versions were eventually published at the end of the 20th century by the Jules Verne Society (Société Jules Verne). In 1919, Michel Verne published The Barsac Mission (), which original drafts contained references to Esperanto, language about which his father had great interest. In 1989, Verne's great-grandson discovered his ancestor's as yet unpublished novel "Paris in the Twentieth Century" which was subsequently published in 1994. Verne's