Ceres is as old as Earth, so its Uranium should be as lowly enriched in U-235 as here, which is today too low for natural reactions. Additionally it would be hi

Ceres is as old as Earth, so its Uranium should be as lowly enriched in U-235 as here, which is today too low for natural reactions. Additionally it would be highly unusual for Ceres to have concentrated Uranium ore deposits to a similar degree as Earth, for mineralogical reasons.