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Power and Propulsion Element (PPE) model is seen on display during an event where NASA is outlining how the agency is executing President Donald J. Trump’s National Space Policy and accelerating preparations for America’s return to the surface of the Moon by 2028, Tuesday, March 24, 2026, at the Mary W. Jackson NASA Headquarters building in Washington. During the event NASA leadership provided updates on mission priorities, including sending the first astronauts to the lunar surface in more than 50 years, establishing the initial elements of a permanent lunar base, getting America underway in …