DescriptionAEC-68-8413 JACKASS FLATS, NEVADA. . .The Phoebus 2A is shown at Test “C” prior to a test. The Phoebus 2A nuclear rocket reactor has been the developed for Project Rover, a program to develop a nuclear propelled rocket capable of interplanetary travel. The Rover program is administrated by the Space Nuclear Propulsion Office under the joint sponsorship of the Atomic Energy Commission and the National Aeronautics and Space Administration. Credit: Bill Jack Rodgers, Los Alamos Scientific Laboratory