South Korea's Danuri Orbiter Captures SpaceX Rocket Impact on Moon
The lunar orbiter provided rare before-and-after imagery of a Falcon 9 upper stage colliding with the lunar far side.
South Korea's Danuri lunar orbiter has captured a rare sequence of images documenting a SpaceX Falcon 9 upper stage impacting the Moon's far side. The event provides scientists with a unique opportunity to study the effects of a known artificial object colliding with the lunar surface.
The impact occurred on August 5, 2026, near the Einstein crater on the Moon's northwestern limb. According to confirmed data, the collision took place at approximately 3:35 p.m. KST (2:35 a.m. ET) at a speed of roughly 5,400 mph. To document the event, Danuri completed eight imaging sessions, beginning approximately 30 minutes before the collision. The orbiter utilized its high-resolution camera, LUTI, and its wide-field polarimetric camera, PolCam, to observe the site.
The Path to Collision
The impacting debris was a Falcon 9 upper stage launched in January 2025, which had originally carried the ispace Resilience and Firefly Aerospace Blue Ghost landers. Following the deployment of its payloads, the stage lacked sufficient propellant to perform a standard disposal maneuver, leaving it to drift through space for approximately 18 months. Gravitational forces and solar activity eventually pulled the derelict hardware into a direct collision course with the lunar surface.
Scientific Implications
This event is scientifically significant because, unlike natural meteoroid strikes, the mass and velocity of the SpaceX rocket stage were known variables. By comparing the immediate before-and-after imagery, researchers can isolate the specific effects of an artificial impact. This allows scientists to refine their understanding of the lunar surface's physical properties, its reflectivity, and how ejecta is distributed during a high-velocity strike.
Oh Tae-seog, head of the Korea AeroSpace Administration, stated that the capture of these scenes is a significant achievement that demonstrates South Korea’s lunar exploration and observation capabilities, specifically regarding mission operations and orbit control.
Future Observations
Moving forward, the data collected by Danuri will be used to coordinate further observations by NASA's Lunar Reconnaissance Orbiter (LRO). While the immediate imagery provides a baseline for the impact, subsequent high-resolution passes by other orbiters will help determine the final scale of the crater and the extent of the debris field. Researchers will continue to analyze the PolCam and LUTI data to determine how the artificial materials of the rocket stage interacted with the lunar regolith.