NASA is reportedly coordinating with the U.S. Department of Energy to develop a fission reactor for lunar operations, despite an aggressive target schedule tied to the 2030s. The available search did not retrieve the article text, so specific reactor capacity, launch date, design, and programme milestones cannot be independently verified here.
A nuclear reactor could provide continuous power through the Moon’s 14-day nights, enabling thermal control, communications, excavation, manufacturing, life support, and preservation systems. For the Ark, dependable baseload power would reduce existential risks from prolonged darkness, dust degradation, solar variability, and failures in energy storage; however, reactor safety, launch reliability, waste management, radiation shielding, cooling, autonomy, and spare-part production remain critical vulnerabilities.
The Ark team should track NASA–DOE reactor specifications, licensing, launch architecture, surface deployment tests, fuel logistics, reactor lifetime, redundancy, and international governance. Design the Ark around multiple independent power sources, preserve reactor-control and maintenance knowledge, stockpile replaceable components, and require enough non-nuclear backup capacity to sustain life-support and archival systems through reactor shutdowns.