South Korea’s Danuri lunar orbiter has captured the first before-and-after images of a fresh lunar crater created when a stray SpaceX Falcon 9 upper stage plowed into the Moon on Wednesday, August 5, 2026, traveling at roughly 8,700 kilometers per hour.
Nearly four years after a Chinese spacecraft component struck the Moon, a leftover piece of a SpaceX rocket smashed into the lunar surface near the lunar terminator on Wednesday morning. The collision, which had been anticipated for days by space agencies and astronomers, left a noticeable dark scar and carved out a new impact crater while ejecting rock and dust across the landscape.
South Korea’s Danuri Captures Before-and-After Evidence
The Korea Aerospace Research Institute reported that its Danuri spacecraft flew over the impact site soon after the upper stage collided with the Moon at about 4:35pm AEST on Wednesday. Making multiple passes from lunar orbit, the orbiter gathered crucial before-and-after photographic data.
Korean scientists monitored the target area about 30 minutes before the impact occurred at 09:34 a.m. Greek time, according to the Korea Aerospace Research Institute. The resulting images show terrain that is noticeably darker where the debris struck, revealing distinct ejecta patterns across the surface.
Astronomers and space agencies plan to combine this new data with forthcoming observations from NASA’s Lunar Reconnaissance Orbiter, which is expected to fly over the crash site next week to examine the aftermath in greater detail.
Telescopes Detect Sodium and Lithium Plumes
Before the satellite images were released, ground-based instruments had already begun documenting the collision’s atmospheric signatures. A telescope in Chile operated by the European Southern Observatory spotted the debris plume resulting from the impact, detecting a stream of sodium and lithium stretching for tens of kilometers into space.
That spectral signature remained visible for approximately five to ten minutes following the collision. Scientists noted that the sodium likely originated from the lunar surface itself, while the lithium may have come from the Falcon 9 rocket stage.
Researchers emphasized that observing such events yields practical benefits for future deep-space exploration. Benjamin Fernando of Los Alamos National Laboratory in New Mexico, who served as the lead author on a recent paper regarding the anticipated impact, explained the value of studying the collision.
Fernando added that it is unclear how bright it will be, which is one of the reasons why we are looking to study this event,
noting that the findings will help researchers refine techniques for tracking space objects and analyzing plume dynamics.
Origins of the Stray Falcon 9 Upper Stage
The rocket segment involved in Wednesday’s crash originated from a Falcon 9 mission launched on January 15, 2025, from Cape Canaveral. That flight carried two robotic lunar landers: Firefly Aerospace’s Blue Ghost-1 and ispace’s Resilience lunar lander from Japan.
While the rocket’s booster returned safely to Earth, its upper stage remained in space after pushing the landers onward. Assuming all of its propellant was spent, researchers estimated that the school-bus-sized spacecraft weighed approximately 4,000 kilograms.
According to SpaceX, the upper stage was not intended to strike the Moon. At a Monday news conference, Julianna Scheiman, director of Nasa Science and Dragon Programs at SpaceX, detailed the procedures normally used for high-energy launches.
“Generally on such missions, SpaceX performs a manoeuvre to make sure the second stage “is safe per the appropriate rules and regulations”,”
Julianna Scheiman, SpaceX
Scheiman stated that we did that
but explained that what has happened is essentially a mixture of solar activity and gravity forces have put it on a path towards the moon.
Broader Implications for Lunar Safety and Research
As space agencies plan for sustained human habitation and permanent bases on the lunar surface, monitoring orbital debris has taken on greater urgency. NASA Administrator Jared Isaacman noted that while meteorites strike the Moon nearly every hour, artificial collisions of this magnitude occur roughly once every six days.
NASA emphasized that there is no danger to Earth from Wednesday’s impact. Instead, space agency officials view the collision as an unplanned scientific opportunity.
Researchers pointed out that deliberate and accidental impacts help test localizing pipelines for future seismic experiments, much like the deliberate crashes NASA carried out during the Apollo program in the 1970s.
Related reading
