NASA has been asked to move fast and place a nuclear reactor on the moon before other countries get there first.
New Directive to Launch Nuclear Reactor on the Moon
The acting head of the space agency has ordered NASA to prepare for this mission by the end of 2029. Future lunar missions, particularly those funded by NASA’s major moon exploration project, Artemis, are expected to be powered by the nuclear reactor.
According to a directive dated July 31, NASA must be ready to launch the nuclear reactor by the first quarter of the 2030 fiscal year. This timeline means the space agency has just over four years to complete a project that has never been done before. The nuclear reactor must produce at least 100 kilowatts of electricity — enough to power around 80 homes on Earth.
NASA plans to use a heavy-class lander to carry the nuclear reactor to the moon. This lander can carry up to 15 metric tons of cargo. The project is a component of NASA’s microreactor-based “Fission Surface Power” initiative. These microreactors are small but powerful systems designed to work in remote or extreme environments — such as the moon.
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The U.S. has never deployed a nuclear reactor on the lunar surface before. If successful, this would mark the first working nuclear reactor installed on another planetary body for continuous power use.
Global Race to Control Lunar Power
By the middle of the 1930s, China and Russia plan to construct a cooperative lunar base equipped with a nuclear reactor. This increases the pressure on NASA to act quickly. If either country sets up a working nuclear reactor on the moon first, they may declare a “keep-out zone.” This would limit U.S. access to valuable parts of the lunar surface.
Such a move could disrupt NASA’s Artemis program, which depends on establishing a long-term presence on the moon. A nuclear reactor is a key part of this plan, as it can provide steady power during the long, cold lunar nights — which can last up to 14 Earth days.
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To speed up the process, the directive says NASA must issue a request for proposals to private industry within 60 days. These proposals would cover how to design, build, and deliver the nuclear reactor. The space agency often works with commercial partners on major space missions, and this project is expected to follow that model.
The urgency behind this project comes from growing international competition in space. The country that builds and operates a nuclear reactor on the moon first could shape future access and control over lunar regions. This adds a new level of importance to building the reactor in time.
Technical Hurdles for Space-Based Nuclear Power
Building a nuclear reactor for the moon presents significant hurdles, despite the purpose being obvious. So far, no microreactor has been licensed or built in the U.S. These compact systems must be lightweight, safe, and able to survive harsh lunar conditions — including wide temperature swings, intense radiation, and lunar dust.
The planned nuclear reactor for the moon will be much smaller than the ones used in U.S. cities. More than 700,000 dwellings on Earth can be powered by a typical reactor. The lunar reactor, while much smaller, will still be powerful enough to run life-support systems, research tools, communication devices, and other equipment needed for survival and operation on the moon.
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However, funding could be an obstacle. While this major step forward is being directed, the space agency is also facing proposed budget cuts. It remains to be seen how this project will move forward under tighter financial conditions.
Still, the directive brings fresh energy to the Fission Surface Power program, giving it a clear goal and a deadline. It also shows that the race to the moon is no longer just about exploration — it’s about infrastructure, energy, and long-term presence. And at the heart of this effort is one powerful piece of technology: the nuclear reactor.
