说明AEC-68-8423 JACKASS FLATS, NEVADA. . .Topside view of the Phoebus 2A nuclear rocket reactor and shield. Borated water flows into the res=actor shield through the pipes seen in the photograph. The liquid serves as a coolant and “Soaks up” radioactivity emitted by the reactor. The Phoebus 2A is being tested at the Nuclear Rocket Development Station in Nevada by the Space Propulsion Office under the joint – sponsorship of the Atomic Energy Commission and the National Aeronautics Space Administration. Credit: Bill Jack Rodgers, Los Alamos Scientific Laboratory
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