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Interlune makes progress on its plans to mine the moon

Illustration: Interlune Harvester on the moon
An artist’s conception shows the Interlune Harvester on the lunar surface. (Interlune Illustration)

Seattle-based Interlune provided a triple-barreled update today on its progress toward mining helium-3 on the moon and returning that resource to Earth.

The startup joined Vermeer Corp., an industrial equipment manufacturer headquartered in Iowa, to unveil a full-scale prototype of an excavator that’s designed to ingest 100 metric tons of moon dirt in an hour. After the helium-3 is extracted, the machine would drop the rest of the dirt back onto the lunar surface in a continuous motion.

Also today, Interlune announced separate agreements with the U.S. Department of Energy and Maybell Quantum Industries to start supplying lunar helium-3 by 2029.

Helium-3 is an isotope that’s much rarer than the helium-4 that you typically find in lighter-than-air balloons. Helium-3 has a wide range of high-tech applications in fields that include quantum computing, fusion power, medical imaging and weapons detection for national security purposes.

The substance is hard to find on Earth, but it’s more abundant on the moon due to bombardment by solar-wind particles. Interlune aims to take advantage of the potential market by extracting lunar helium-3 and shipping it back to Earth.

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Zeno Power strikes a deal to recycle radioactive material

Aerial view of Oak Ridge National Laboratory
An aerial view shows the main campus of Oak Ridge National Laboratory in Tennessee. (ORNL Photo)

Zeno Power says it has gained access to radioactive material destined for its first full-scale radioisotope power systems under the terms of a partnership with the U.S. Department of Energy.

The transfer of the material from Oak Ridge National Laboratory in Tennessee benefits Zeno as well as the Department of Energy: Zeno — which has offices in Seattle and Washington, D.C. — gets the strontium-90 fuel that it needs for its next-generation RPS. At the same time, the DOE gets an opportunity to put a decades-old RPS to good use instead of putting it through a costly disposal process.

“This transfer highlights another unique approach our team has taken to accelerate environmental cleanup at Oak Ridge,” Jay Mullis, manager of DOE’s Oak Ridge Office of Environmental Management, said today in a news release. “This is a win-win scenario that’s removing a significant source of radioactivity at a savings to taxpayers, while also supporting nuclear innovation.”

Radioisotope power systems, also known as radioisotope thermoelectric generators or RTGs, have been used for decades to provide off-grid power for space missions and other applications. Such devices convert the heat generated by radioactive decay into electricity. Plutonium-238 is often used for space applications, but Zeno is working on a system that uses strontium-90 as an alternative heat source.

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