星空无限传媒

If humans are going to live and work on the moon, they can鈥檛 bring everything with them. Every pound of cargo launched from Earth adds enormous cost and complexity, making long-term lunar missions difficult to sustain.

The challenge isn鈥檛 just getting to the moon鈥攊t鈥檚 learning how to stay there.

At LSU, mechanical engineering researchers are tackling that challenge by rethinking one of the most basic needs of any settlement: materials. Instead of shipping metals and building supplies across space, they鈥檙e asking a question: What if we could make what we need using moon dust?

In LSU鈥檚 Extreme Processing & Interfacial Complexions (EPIC) Lab, overseen by Christopher Marvel, first-year PhD student Emma McCarthy is exploring how lunar regolith鈥攖he fine, powdery soil that covers the moon鈥攃ould be transformed into usable metals and energy.

With support from NASA-funded programs, the work represents an early but promising step toward building a sustainable human presence beyond Earth.

You Can鈥檛 Pack a Moon Base

Building anything on the moon comes with a fundamental constraint: limited resources.

鈥淚 would say there鈥檚 a challenge because we want to limit the amount of supplies that we need to bring from Earth,鈥� McCarthy said. 鈥淲e want to make it as efficient as we can.鈥�

Transporting construction materials from Earth is not only expensive鈥攊t鈥檚 impractical for long-term missions like NASA鈥檚 Artemis program, which aims to establish a sustained human presence on the lunar surface.

The solution lies in what NASA calls in-situ resource utilization (ISRU)鈥攗sing materials already available on the moon.

鈥淲e want to figure out a way where we can easily extract and use the materials that are already present on the moon,鈥� McCarthy said. 鈥淭hat's the main goal.鈥�

Turning Moon Dust into Metal and Energy

McCarthy鈥檚 research focuses on chemical processes called thermite reactions, which produce intense heat and separate metals from their oxides. It involves mixing powdered forms of a metal fuel and a metal oxide鈥攐ften aluminum and iron oxide.

鈥淚t's called an oxidation-reduction process,鈥� she said. 鈥淎s you heat the system up, the oxygen actually prefers to leave the iron and go to the aluminum, and the process of the aluminum bonding with the oxygen gives off a ton of energy.鈥�

And, importantly, pure metal.

On Earth, thermite is commonly used to weld railroad tracks. On the moon, it could serve a dual purpose: generating extreme energy and heat for repairs while also producing usable metals like aluminum and iron.

The LSU team is taking this concept a step further by adapting it to lunar conditions. Instead of traditional materials, they use simulated lunar regolith鈥攔ich in metal oxides鈥攁nd pair it with lithium hydride, a highly reactive compound.

The result is a reaction that could simultaneously produce construction materials and energy.

Simulating Space on Earth

McCarthy, a Louisiana native, works under the guidance of Marvel, assistant professor in LSU鈥檚 Department of Mechanical and Industrial Engineering, and with the assistance of Octavio Combellas-Jaimes, a freshman in mechanical engineering, who was born in Houston and attended high school in Mandeville, La.

Combellas-Jaimes鈥� role has included using cryogenic ball mills to process regolith into fine powders for the team鈥檚 experiments and polishing the resulting metals for inspection with advanced electron microscopy.

To test their ideas, the team recreates lunar conditions inside the lab, using an argon glove box so the materials are only exposed to an environment similar to space.

鈥淲e pack everything up in the ball mills inside the argon glove box so that it stays in that kind of environment while we're ball milling it as well,鈥� McCarthy said.

鈥淲e're seeing what it would look like as if it were ball milled in space, which is super important because it might鈥攅specially the lithium being in an oxygen-rich environment鈥攊t might behave very differently than in an argon-rich environment.鈥�

Electron microscopes allow the researchers to study materials at the atomic level to learn about their strengths and weaknesses.

鈥淲e want to see how well we鈥檙e mixing the material and what kind of structure it produces,鈥� she said. 鈥淭hat microstructure can influence whether the reaction will actually work.鈥�

Graduate and undergraduate researchers play a key role in this process.  Combellas-Jaimes spends hours preparing materials and learning advanced techniques.

鈥淢y goal has been to pick up as many skills as I can,鈥� he said. 鈥淓very day I鈥檓 learning something new that contributes to solving this problem.鈥�

 

Building and Sustaining Life Beyond Earth

While the research is still in its early stages, the implications are far-reaching.

Marvel sees the work not just as a way to build structures, but as a versatile tool for sustaining life on the moon. Beyond construction, the process could also produce heat and even hydrogen fuel鈥攎aximizing every resource extracted from lunar soil.

鈥淚f you get metals out of it, great. If you generate heat and recycle that, great. If you get hydrogen, that works too,鈥� Marvel said. 鈥淚 think it would be a pretty versatile capability.鈥�

For students like Combellas-Jaimes, the work is as inspiring as it is practical.

鈥淚 can actually apply what I鈥檓 learning here to something that might happen in real life,鈥� he said. 鈥淭hat kind of blew my mind.鈥�

And for McCarthy, the motivation is clear: helping humanity take its next step into space.

鈥淭he big picture is creating sustainable, efficient ways to use local resources for space exploration,鈥� she said.