NASA and the U.S. Department of Energy signed a memorandum of understanding on October 8, 2026, establishing end-to-end cooperation on space nuclear power and propulsion, including research, fuel production, testing, launch integration, and operations.[1] A December 2025 executive order directs NASA to develop a launch-ready lunar surface reactor by 2030; NASA also identifies Space Reactor-1 Freedom for launch in 2028 and Lunar Reactor-1 as the fission system intended to support a future Moon base.[1]
For a permanent lunar archive, fission power addresses the primary energy vulnerability of solar-dependent infrastructure: the Moon’s extended darkness and permanently shadowed regions. Nuclear generation could provide continuous electricity for habitat life support, thermal control, communications, computing, scientific instruments, rovers, and resource extraction, reducing dependence on vulnerable Earth resupply and enabling redundant Ark sites.[1] The programme also creates safety, fuel-cycle, reactor-maintenance, launch, and radiation-management requirements that must be treated as civilisation-critical dependencies.
The Ark team should track the 2028 Freedom launch, the 2030 reactor deadline, reactor design maturity, fuel-production capacity, expected electrical output, operating lifetime, shielding requirements, failure modes, waste handling, and autonomous maintenance capability. Ark architecture should reserve power budgets and physical interfaces for nuclear generation, require multiple independent power sources, and research how reactor heat and electricity can protect biological, digital, and industrial archives during lunar night and emergency isolation.