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Whitepaper #418 submitted to the Planetary Science and Astrobiology Decadal Survey 2023-2032. Topics: ocean worlds
We propose R&D activities supporting the advancement of improved radioisotope heat sources for future NASA exploration missions such as those to Ocean Worlds. To enable flexible geometries and high volumetric power loadings, microsphere-based heat sources are attractive. R&D would allow a feasibility assessment of microsphere-based heat sources.