NASA plans to conduct the first-ever combustion experiments on the lunar surface through the Flammability of Materials on the Moon (FM2) project. According to NASA, these tests aim to determine how fire behaves in the moon’s gravity—roughly 16.667% of Earth’s—to establish safety protocols for future Artemis missions and permanent lunar bases.
Why Lunar Gravity Creates a ‘Goldilocks Zone’ for Fire
Fire behaves differently depending on the gravitational pull of the environment. On Earth (1g), hot air rises, giving flames their familiar teardrop shape. In the microgravity of the International Space Station (ISS), flames form blue spheres known as “cool flames.”
The moon presents a middle ground. Emily Johnson, a project manager at NASA’s Glenn Research Center, describes lunar gravity as a “Goldilocks zone” for burn rates. In this environment, flames don’t flicker and remain stable, lasting longer than they do on Earth.
The Safety Risks of Low-Gravity Combustion
The FM2 experiment is a critical safety measure because gravity changes how materials burn. Paul Ferkul, the lead researcher on FM2, noted on the “Houston We Have A Podcast” that researchers must identify the specific flow environments where fire could occur and how to minimize those risks.
A primary concern for the Artemis crew is that materials considered “marginally nonflammable” on Earth may become flammable in lower gravity. Because these cooler flames last longer, the chemical reactions fueling the combustion can persist, potentially increasing the danger of an accidental fire in a lunar habitat.
Comparing Combustion Environments
| Environment | Gravity Level | Flame Behavior |
|---|---|---|
| Earth | 1g | Yellow, teardrop shape, rises quickly |
| ISS (Microgravity) | ~90% of Earth’s (effective) | Blue, spherical “cool flame” |
| Moon | 16.667% of Earth’s | Stable, non-flickering, longer duration |
Timeline for the FM2 Experiment and Artemis Missions
The FM2 experiments are tied to the broader timeline of the Artemis program. While Artemis II and III focus on orbit and routine checks, the combustion tests require a physical presence on the lunar surface.
NASA expects to conduct the FM2 experiments during Artemis IV, which is currently scheduled for launch in early 2028. This mission aims to return astronauts to the lunar surface for the first time since 1972.
Future Implications for Mars Exploration
The data gathered from the moon will serve as a blueprint for deeper space exploration. According to Emily Johnson, the environment on Mars is expected to be similar to the moon’s partial gravity, though not identical. Understanding how to suppress fires in a stable, low-gravity environment is essential before humans attempt to build permanent structures on the Red Planet.
NASA has previously collaborated with the European Space Agency (ESA) and the Japan Aerospace Exploration Agency (JAXA) to test fire suppression methods in space, but the FM2 project marks the first time these tests will occur on another planetary body.
Frequently Asked Questions
Why is NASA lighting a fire on the moon?
To study how combustion behaves in partial gravity, which is essential for determining the flammability of materials and ensuring the safety of astronauts in lunar bases.
When will the experiment happen?
The FM2 experiment is planned for the Artemis IV mission, scheduled for launch in early 2028.
How is a moon fire different from an Earth fire?
Due to the moon’s gravity (about 1/6th of Earth’s), flames are expected to be more stable, not flicker, and last longer than they do on Earth.
What do you think about the risks of lunar colonization? Should safety tests like FM2 be a prerequisite for all permanent bases? Let us know in the comments below or subscribe to our newsletter for more space exploration updates.
