; and (8) detail how the Administration has implemented or rejected the recommendations from the National Research Council’s 2009 report titled Radioisotope Power Systems: An Imperative for Maintaining U.S. Leadership in Space Exploration. (d) Report to Congress Not later than 180 days after the date of enactment of this Act, the Administrator shall submit the results of the analysis to the appropriate committees of Congress. 516. Assessment of Mars architecture (a) Assessment The Administrator shall enter into an arrangement with the National Academies of Sciences, Engineering, and Medicine to assess— (1) the Administration’s Mars exploration architecture and its responsiveness to the strategies, priorities, and guidelines put forward by the National Academies’ planetary science decadal surveys and other relevant National Academies Mars-related reports; (2) the long-term goals of the Administration’s Mars Exploration Program and such program’s ability to optimize the science return, given the current fiscal posture of the program; (3) the Mars exploration architecture’s relationship to Mars-related activities to be undertaken by foreign agencies and organizations