, 4 tweets, 3 min read Read on Twitter
Section 1.  Purpose.  This memorandum updates the process for launches of spacecraft containing space nuclear systems.
Space nuclear systems include radioisotope power systems (RPSs), such as radioisotope thermoelectric generators (RTGs) and radioisotope heater units (RHUs), and fission reactors used for power and propulsion.
The ability to use space nuclear systems safely and sustainably is vital to maintaining and advancing United States dominance and strategic leadership in space.
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