LEICESTER, England & BURLINGTON, Mass.–(BUSINESS WIRE)–In a landmark achievement for international space exploration, Perpetual Atomics, QSA Global, Inc. and the University of Leicester have completed the first historical production of an Americium-fuelled Radioisotope Heater Unit (RHU) full scale core containing ceramic form americium-241 pellets in a metal containment structure. This breakthrough builds on the successful americium pelleting work in late 2025 and on two decades of experience