NASA and the Energy Department signed a space nuclear pact as NASA works toward a launch-ready reactor for the Moon by 2030

NASA Administrator Jared Isaacman and Energy Secretary Chris Wright signed a memorandum of understanding on Thursday, Oct. 8, 2026, committing the two agencies to joint work on nuclear power and propulsion for space. The document takes effect Nov. 1. It lands against a standing White House target of a lunar surface reactor ready for launch by 2030, and NASA says it is making steady progress toward that date.

Isaacman called the moment the start of a “Nuclear NASA-era,” saying nuclear power will let spacecraft travel farther, operate longer and carry more capable instruments. Wright framed it politically, saying that thanks to President Trump “America’s nuclear renaissance is reaching a new frontier.” The signing took place at the White House Office of Science and Technology Policy’s Science: A Golden Age Summit in Washington, with OSTP Director Michael Kratsios looking on.

Memorandum scope: research, fuel, launch and operations

The agreement is titled “Accelerating American Leadership in Space Nuclear Power and Propulsion.” According to NASA’s announcement, it sets up a framework for end-to-end collaboration across advanced research, fuel production, testing, launch integration and operations, with safety described as the central pillar throughout.

The release publishes no dollar figures, no reactor power ratings and no milestone schedule for the memorandum itself. It is a structure for how two agencies with different expertise will work together, not a procurement or a hardware contract. The Energy Department brings its national-laboratory reactor and fuel-production experience, while NASA brings launch integration, mission design and spaceflight safety review. Fuel production and testing are named in the release as areas of joint work, and the release gives no detail beyond naming them.

The December 2025 executive order behind the 2030 date

The date is older than the memorandum. NASA’s release says a December 2025 executive order, “Ensuring American Space Superiority,” directs the agency to develop a launch-ready lunar surface reactor by 2030. The order’s text, Executive Order 14369 dated Dec. 18, 2025, lists among its space policy priorities “deploying nuclear reactors on the Moon and in orbit, including a lunar surface reactor ready for launch by 2030.”

The language is a policy goal, and the order qualifies it. Section 6(b) states that the order is to be implemented consistent with applicable law and subject to the availability of appropriations, and it creates no enforceable rights. The order also assigns the White House science adviser, rather than NASA or the Energy Department, to issue guidance within 60 days on a National Initiative for American Space Nuclear Power. A launch-ready reactor by 2030 is therefore a target backed by policy, not a funded commitment with a contract date attached.

Lunar Reactor-1 and Space Reactor-1 Freedom

NASA’s Space Reactors Division, part of the agency’s Research and Technology Mission Directorate, describes Lunar Reactor-1 as the first fission power system on the lunar surface. It is meant to run the planned Moon Base through the long lunar night near the south pole, where solar power cannot do the job alone. The release says the system would supply habitats, communications, instruments, rovers and resource processing, and calls it essential for future Mars missions.

The nearer hardware milestone is Space Reactor-1 Freedom, scheduled to launch in 2028. NASA’s division page describes it as the first fission-powered interplanetary spacecraft, a demonstration of nuclear-electric propulsion bound for Mars that will deliver three SkyFall helicopters. Steven Sinacore is listed as program director. NASA calls the pair the foundation of a domestic nuclear-space industrial base.

Neither page gives a power output for either reactor. For the lunar unit, the only date in the release is the 2030 goal itself, and the division page lists no hardware milestone for it at all. A separate NASA call for proposals on SAM.gov, titled Space Power and Reactor Capabilities, is the visible channel for industry to join the work.

Radioisotope work running in parallel

The memorandum also covers the older, smaller class of nuclear power that spacecraft already use. Dragonfly, NASA’s car-sized rotorcraft for Saturn’s moon Titan, is scheduled to launch in 2028 with a Multi-Mission Radioisotope Thermoelectric Generator and 24 Light Weight Radioisotope Heater Units. NASA and the Energy Department also plan to provide 24 similar heater units for the European Space Agency’s Rosalind Franklin Mars rover, which will use them to keep instruments warm.

Radioisotope units convert heat from decaying radioactive material and involve no chain reaction, which separates them from the fission reactors in the lunar and Mars programs. NASA’s Ignition page groups the agency’s nuclear material under the “Nuclear NASA” label, including a March 24, 2026 fact sheet titled “America Underway in Space on Nuclear Power” and a presentation posted two days later.

What remains unpublished is the part that decides whether 2030 holds: how much money Congress appropriates, which agency builds the reactor core, and when a launch contract is awarded. The memorandum becomes effective Nov. 1, and the executive order’s own appropriations condition applies until funding exists.

This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.

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