Nuclear Thermal Propulsion Systems, Glenn Research Center
Bigger Than Saturn, Bound for Deep Space, Air & Space Magazine
Nuclear Thermal Propulsion: Game Changing Technology for Deep Space Exploration - NASA
Nuclear Propulsion Could Help Get Humans to Mars Faster - NASA
Nuclear Thermal Propulsion Systems, Glenn Research Center
NASA to test nuclear rocket engine for possible Mars missions
Recent Developments in Nuclear Power for Space Exploration
Nuclear Thermal Propulsion: Game Changing Technology for Deep Space Exploration - NASA
Exploring the Universe with Nuclear Power - Universe Today