Spent SpaceX Rocket Punches a Fresh Crater Into the Moon After 18 Months Adrift

A Four-Ton Piece of Space Junk Finds Its Final Destination

A piece of a SpaceX rocket weighing an estimated four tons and traveling at more than 5,000 miles per hour unintentionally crashed into the moon on Wednesday, August 5. Nobody on Earth saw it happen in real time — the impact point was simply too remote — but the evidence arrived quickly, and it was unmistakable.

The component, the upper portion of the Falcon 9, had been drifting in space since January 15, 2025, when it was used to launch spacecraft to the moon for Firefly Aerospace and ispace. While the rocket's first stage — the booster used for liftoff — returned to Earth, its second, or upper, stage served as the workhorse to propel the robotic landers on their path to the moon and, after its mission was complete, remained in space. Typically, a Falcon 9's second stage used for a deep space mission would enter a highly elliptical orbit of the Earth and ultimately be brought down by atmospheric drag for a fiery reentry — but for reasons not quite clear, this stage managed to avoid the atmosphere on its closer approaches to Earth, and persisted in an orbit that brought it nearer and nearer the moon.

How Scientists Knew It Was Coming

Amateur astronomer Bill Gray is credited with predicting the impact using publicly available data. Using this information, he was also able to forecast the precise spot the spent booster would hit the moon: near the Einstein Crater at the far western lunar horizon. Independent astronomers used publicly available data to track the Falcon 9 upper stage and determine that it was on a collision course with the moon, according to NASA. The agency's Center for Near Earth Object Studies, which tracks the orbits of space rocks that could crash into Earth, and very occasionally the moon, also confirmed the impact trajectory of the upper stage.

Scientists used Gray's tracking data to show that the rocket body — 39 feet long and 13 feet wide, weighing around 8,800 pounds — would gouge a new crater into the surface. NASA estimated the impact would create a crater 60 feet across and 12 feet deep. The crater won't be as large as one created by a solid object such as an asteroid, because the rocket body is largely hollow.

Confirmed: Sodium, Lithium, and a New Lunar Scar

The European Southern Observatory's Very Large Telescope, located at the Paranal Observatory in Chile, detected the impact. "We can confirm that the telescope detected spectral lines of sodium and lithium gas in the impact plume lasting for 5–10 minutes after impact," said Dr. Bárbara Ferreira, media manager for ESO's department of communication. "The sodium likely originated from the lunar soil, whereas the lithium could come from the rocket itself."

The Korean lunar orbiter Danuri captured before-and-after images of the SpaceX Falcon 9 upper stage colliding with the lunar surface, as reported by the Korean AeroSpace Administration. The images were captured by the orbiter's high-resolution Lunar Terrain Imager camera. According to officials with the Korea Aerospace Research Institute, "Danuri began observations about 30 minutes before the collision and, through orbit control, passed over the impact site multiple times, conducting a total of 8 imaging sessions." They confirmed that "changes in the terrain around the impact site and traces of ejecta spread were confirmed."

A Wake-Up Call for the Space Age

Although the impact occurred near Einstein Crater on the moon's far side and posed no danger, it highlights growing concerns about space junk beyond Earth as lunar exploration accelerates. Solar activity and gravitational forces caused the stage's unplanned return to the moon — a reminder that once hardware escapes Earth's atmosphere, its fate isn't always in human hands. The event doesn't present any danger to anyone, though it does highlight a certain carelessness about how leftover space hardware is disposed of.

NASA is planning to create a more sustained human presence on the lunar surface through the Artemis program, but as more missions head for the moon — which does not have a protective atmosphere like Earth's — managing the accumulation of space debris in lunar orbit will increasingly become an issue. This crash was unplanned and uncontrolled, but it has delivered something genuinely useful: real scientific data on lunar impact dynamics, a new crater to study, and a sharp reminder that the moon is no longer just a destination — it's becoming a neighborhood that humanity will need to keep clean.