What changed
The United States, China and Russia are developing nuclear reactors for future lunar exploration and bases. NASA aims to prepare a 20-kilowatt reactor for launch by December 2030, while Russia’s proposed Selena reactor would generate up to 10 kilowatts, operate autonomously for 10 years and be ready by 2036 as part of a reported China partnership.
The projects are still unproven on the Moon. The United States and Russia reportedly plan to transport their reactors while inactive.
Why it matters
The Moon’s night lasts more than two weeks, making solar power alone a poor fit for a permanent base. Nuclear power could keep equipment running through darkness and support larger operations than early solar and radioisotope systems can manage.
That makes the reactor race about infrastructure, not just propulsion or exploration. The first working system could help determine who can operate continuously near the lunar south pole, where NASA wants its reactor placed, and how much room future missions have to work nearby.
The risks are equally concrete. A launch failure could spread radioactive material. On the Moon, reactors would be difficult to shield with Earth-style containment, and surrounding areas might need to be restricted to protect astronauts and equipment. Those safety zones could collide with the Outer Space Treaty’s principle that no country may claim the Moon or block free access to space.
The informed outlook is that the dates will remain provisional until the designs survive technical and safety testing. If one project reaches the Moon first, the argument over who may control access around a reactor could become as important as the reactor itself.
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