Skip to main content
How Rocket Exhaust From Moon Landings Will Threaten Future Missions
The Moonrush has begun. Last year, NASA's Artemis 1 mission flew to the Moon and back in a test of the technology that will take humans back to the surface in the next few years. The Artemis program will establish a space station called the Lunar Gateway in orbit and a base on the surface. There will be other visitors too - both Russia and China are planning crewed missions. And some 30 uncrewed missions are in various stages of completion by spacefaring nations and private companies. All that heralds a new age of lunar exploration, discovery and commercialization. But it also comes with risks. One problem is that the ejecta from lunar landings and launches could envelop the moon in a cloud of high-velocity dust particles that threaten other lunar missions. But just how significant this problem will be is currently unknown. Enter Philip Metzger at the University of Central Florida and James Mantovani at the NASA Kennedy Space Center, who have attempted to quantify the risks for the first time. They say that spacecraft orbiting high above the lunar surface should be safe but others making closer approaches risk significant impacts with this dust. The challenge in assessing the risk is that the interaction between rocket exhaust and the lunar surface is poorly understood. The evidence from Apollo missions is that landers’ rocket exhausts appeared to sweep away surface dust leaving a clean rock surface but no crater.
Discover Magazine