Nuclear propulsion includes a wide variety of propulsion methods that use some form of nuclear reaction as their primary power source. Many military submarines, and, owing to crude prices and emissions, a growing number of large civilian surface ships, especially icebreakers, use nuclear reactors as their power plants (see nuclear marine propulsion for civil use and nuclear navy for military use). In addition, various types of nuclear propulsion have been proposed, and some of them tested, for spacecraft applications:THE LEAVING-EARTH-1I
Nuclear propulsion includes a wide variety of propulsion methods that use some form of nuclear reaction as their primary power source. Many military submarines, and, owing to crude prices and emissions, a growing number of large civilian surface ships, especially icebreakers, use nuclear reactors as their power plants (see nuclear marine propulsion for civil use and nuclear navy for military use). In addition, various types of nuclear propulsion have been proposed, and some of them tested, for spacecraft applications: