SpaceX Rocket to Hit Moon: What Happens Next?

The Moon has taken countless hits over its long history—asteroids, meteors, and the occasional spacecraft. On August 5, it will take another one, this time from a drifting SpaceX rocket stage. The upper section of a Falcon 9, launched in January 2025, is on an accidental collision course with the lunar surface, according to NASA's Center for Near-Earth Object Studies (CNEOS). This event marks a rare instance of a SpaceX rocket to hit the Moon, offering a unique scientific opportunity and highlighting the growing space debris problem.

The impact is not a planned experiment or a controlled maneuver. It's the result of a chain of events that began with a routine commercial launch and ended with a five-story-tall piece of hardware hurtling toward the Moon at about 2.43 kilometers per second (5,400 mph). Here's what we know about the collision, what it means for lunar science, and why it's a reminder that space debris is a growing problem.

The Rocket's Journey

The Falcon 9 lifted off on January 15, 2025, carrying two commercial lunar landers: Blue Ghost, built by Texas-based Firefly Aerospace, and Resilience, from Tokyo's ispace. Blue Ghost successfully soft-landed on the Moon in March 2025, while Resilience failed to land safely a few months later. The rocket's first stage—the booster that provides initial thrust—returned to Earth as designed. But the second, or upper, stage stayed in space, serving as the workhorse that propelled the landers on their path to the Moon.

For missions to low-Earth orbit, where the International Space Station circles, SpaceX and other operators typically dispose of the upper stage by letting it burn up in Earth's atmosphere. But for high-energy missions like this one, that's not an option. As Julianna Scheiman, director of NASA Science and Dragon Programs at SpaceX, explained at a news conference, "For high energy missions, we need to perform a different maneuver to ensure the second stage itself is safe per the appropriate rules and regulations." The stage was placed on a trajectory that was supposed to keep it away from the Moon, but "a mixture of solar activity and gravity forces" put it on a collision path.

Independent astronomers, using publicly available data, were the first to notice the trajectory. They tracked the upper stage and determined it was heading for the Moon. NASA's CNEOS, which normally tracks near-Earth objects, confirmed the impact trajectory.

What Happens at Impact?

The upper stage is about the size of a five-story building, with a mass on Earth of at least 4,000 kilograms (8,800 pounds). Traveling at 2.43 kilometers per second, it will strike the lunar surface with enormous kinetic energy. The exact size and depth of the resulting crater are not yet known—scientists will need to observe the impact site after the collision to measure it.

But the event itself is a scientific opportunity. NASA spokesperson Jimi Russell said, "There is no danger to Earth. NASA will continue to track the booster for training purposes, as well as later observe the impact site for scientific purposes." The agency plans to use the impact to learn more about the Moon's surface and how it responds to impacts, which could inform future lunar exploration missions.

The Moon has no atmosphere, so the rocket will not burn up or slow down as it approaches. It will hit the surface at full speed, creating a crater and ejecting lunar material. Scientists will be watching—not just for the spectacle, but for the data.

Space Debris: A Growing Concern

This incident highlights a problem that's been building for decades: space debris. Most debris orbits Earth, but as missions push farther into space, more hardware is left in trajectories that can intersect with other celestial bodies. The Falcon 9 upper stage is a prime example. It was shed in space and remained in orbit until gravity and solar radiation pressure nudged it onto a collision course with the Moon.

The issue is not just about the Moon. As commercial space activity grows, so does the amount of hardware left in space. SpaceX and other operators follow disposal guidelines, but as Scheiman noted, high-energy missions require different maneuvers. The fact that this stage ended up on a lunar impact trajectory despite those maneuvers shows how difficult it is to predict the long-term behavior of objects in space.

For now, the impact is a one-off event—an accident, not a deliberate act. But it serves as a reminder that space is getting crowded, and the rules for disposing of hardware need to keep pace with the industry's growth. As we look to return to the Moon and eventually go to Mars, the question of what we leave behind will only become more important.

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