Key keywords: South Korean lunar satellite Danuri, SpaceX Falcon 9 upper stage, moon crash before and after images, lunar impact crater, cislunar space debris, deep space mission end-of-life management, NASA Lunar Reconnaissance Orbiter, KPLO lunar imagery South Korea’s Korea Pathfinder Lunar Orbiter (KPLO), better known as Danuri, has released unprecedented before-and-after imagery of the 2022 SpaceX Falcon 9 upper stage impact site on the lunar surface, marking the first time a non-NASA lunar mission has captured such a clear side-by-side record of a human-made object crashing into the moon. The Falcon 9 upper stage in question was launched in 2015 to deploy the U.S. National Oceanic and Atmospheric Administration’s DSCOVR climate satellite into a deep space orbit between Earth and the sun. After completing its mission, the discarded stage was left drifting in an unstable cislunar orbit, with amateur and professional astronomers tracking its path for years before confirming it would collide with the moon’s far side in March 2022. Danuri, which entered lunar orbit in August 2022, first captured high-resolution baseline imagery of the impact target region during its initial full-lunar surface mapping pass in late 2022, just months after its arrival, when no new human-made impacts had been recorded in the area. The orbiter revisited the exact same site in December 2023, capturing updated imagery that revealed a 18-meter-wide fresh impact crater, surrounded by light-colored ejecta debris spread across more than 300 meters of the surrounding lunar terrain. Researchers from the Korea Aerospace Research Institute (KARI) noted that the imagery aligns with general predictions from impact physics models, but the direct before-and-after comparison provides far more precise data on how high-speed human-made objects interact with the fine, powdery lunar regolith. The dataset will also support ongoing research into planetary defense strategies, as scientists can use the known mass, speed and impact angle of the Falcon 9 stage to refine models of how small to mid-sized asteroid impacts could affect rocky, airless planetary bodies like the moon, Mercury and even Earth. Prior to Danuri’s release, NASA’s Lunar Reconnaissance Orbiter (LRO) captured imagery of the impact crater months after the crash, but lacked matching pre-impact footage of the exact site with the same high resolution as Danuri’s mapping data. The release has also sparked renewed conversations about cislunar space debris management, as more government and private lunar missions are scheduled to launch over the coming decade. Currently, there are no binding international regulations requiring deep space mission operators to dispose of end-of-life spacecraft and upper stages in safe orbits that avoid lunar impact, raising concerns that future unplanned crashes could contaminate scientifically valuable lunar sites, including permanently shadowed south polar craters that hold deposits of water ice critical for future crewed lunar exploration and resource utilization efforts.