A discarded SpaceX rocket component has collided with the lunar surface, marking an unintended impact that posed no risk to Earth. The four-tonne object, measuring approximately the height of a five-story building, originated from a Falcon 9 rocket that launched commercial lunar landers in January 2025. The collision occurred at approximately 5,400 miles per hour, generating a plume of lunar dust expected to extend for miles across the surface.
Nasa estimated the impact would produce a crater roughly 60 feet wide and 12 feet deep, with ejected material dispersing outward from the strike zone. Professional and amateur astronomers utilizing high-powered telescopes and cameras were unable to visually confirm the impact on the day of the event, potentially due to the location’s proximity to the moon’s visible edge. U.S. and South Korean lunar satellites are positioned to photograph the impact site, though data transmission may require several days. Nasa officials stated they would pursue imaging opportunities to collect data that could enhance scientific understanding of artificial impacts and refine space object tracking methods.
The rocket stage had remained in orbit since the January 2025 mission because the trajectory required for lunar delivery left it stranded in space rather than returning to Earth’s atmosphere. Unable to be controlled after expending its fuel, the component drifted among numerous other pieces of space debris. Solar activity and gravitational forces combined this year to place the stage on a collision course with the moon. SpaceX director Julianna Scheiman attributed the trajectory to interactions between solar effects and gravity.
While thousands of pieces of space junk crowd Earth’s orbit, unintended lunar impacts remain comparatively uncommon. Historical precedent includes a Chinese rocket stage impacting the moon in March 2022 and various spacecraft crashes during recent lunar landing attempts. Intentional lunar impacts have also occurred, including a deliberate Nasa impact in 2009 designed to study ejected lunar material. Nasa and SpaceX indicated they are discussing preventative measures to avoid similar future incidents.
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