A South Korean lunar orbiter has captured the first before-and-after images of the moon’s surface following the uncontrolled impact of a SpaceX Falcon 9 upper stage on Wednesday, March 4, 2026. The collision occurred at approximately 5,400 mph (8,700 kph), carving out a new crater in the lunar surface. The Korea Aerospace Research Institute’s Danuri spacecraft documented the impact site, revealing a noticeably darker terrain where the rocket struck, ejecting dust and rock debris.
NASA’s Lunar Reconnaissance Orbiter is expected to conduct additional observations next week to further assess the crater’s size and characteristics. The impact was not intentional and posed no threat to Earth, according to scientists tracking the event.
How the Collision Occurred
The Falcon 9 upper stage, originally launched in January 2025 as part of a mission carrying two lunar landers, was left in a highly elliptical orbit after completing its primary objective. Over the following months, solar radiation pressure and gravitational perturbations from the Earth, Moon, and Sun gradually altered its trajectory, pushing it toward an unplanned lunar collision. Astronomers monitoring the object confirmed its accelerating descent in the days leading up to impact.
The European Southern Observatory’s Very Large Telescope in Chile detected spectral signatures of sodium and lithium gas in the impact plume, lasting 5–10 minutes after the collision. Researchers attributed the sodium to lunar soil and the lithium to the rocket’s upper stage, providing further confirmation of the event.
Global Space Surveillance Tracks the Event
Multiple international space agencies and observatories documented the impact, including:
- China’s Gande-1 01 satellite, which captured video footage of the collision, marking a demonstration of its space debris monitoring capabilities.
- European Southern Observatory, which recorded chemical fingerprints in the debris plume.
- South Korea’s Danuri orbiter, which provided high-resolution before-and-after imagery of the lunar surface.
Historical Context: Space Debris on the Moon
This is not the first instance of human-made debris striking the moon. In March 2022, a Chinese Long March 3C rocket stage from the Chang’e 5-T1 mission (2014) collided with the lunar surface, creating a double crater approximately 95 feet wide. Since the dawn of the space age, hundreds of tons of human-made objects have impacted the moon, including spent rocket stages, landers, and other mission-related debris.
Scientists warn that the growing accumulation of space junk in Earth’s orbit—estimated at over 17,000 metric tons—increases the risk of future collisions, both in lunar orbit and around Earth. Such events could trigger a cascade of debris, endangering active satellites and future missions.
What’s Next?
Space agencies, including NASA and the Korea Aerospace Research Institute, are analyzing the impact data to determine:
- The exact dimensions of the new crater.
- The composition of ejected material to study lunar geology.
- The long-term implications for lunar exploration and debris management.
For now, the Falcon 9 upper stage’s collision serves as a reminder of the challenges posed by space debris, both in Earth’s orbit and beyond.